ESM-48100U5 V300R008C10 User Manual [PDF]

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ESM-48100U5 V300R008C10



User Manual Issue



06



Date



2022-08-04



HUAWEI TECHNOLOGIES CO., LTD.



Copyright © Huawei Technologies Co., Ltd. 2022. All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd.



Trademarks and Permissions and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd. All other trademarks and trade names mentioned in this document are the property of their respective holders.



Notice The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS" without warranties, guarantees or representations of any kind, either express or implied. The information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute a warranty of any kind, express or implied.



Huawei Technologies Co., Ltd. Address:



Huawei Industrial Base Bantian, Longgang Shenzhen 518129 People's Republic of China



Website:



https://e.huawei.com



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About This Document



About This Document Overview This document describes the energy storage module ESM-48100U5 (ESM for short) in terms of its overview, application scenarios, external ports, working principles, installation, and commissioning. Figures provided in this document are for reference only.



Intended Audience This document is intended for: ●



Maintenance engineers



●



Sales engineers



●



Technical support engineers



Symbol Conventions The symbols that may be found in this document are defined as follows: Symbol



Description Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. Indicates a potentially hazardous situation which, if not avoided, could result in equipment damage, data loss, performance deterioration, or unanticipated results. NOTICE is used to address practices not related to personal injury.



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About This Document



Symbol



Description Calls attention to important information, best practices and tips. NOTE is used to address information not related to personal injury, equipment damage, and environment deterioration.



Change History Changes between document issues are cumulative. The latest document issue contains all the changes made in earlier issues.



Issue 06 (2022-08-04) ●



Updated 1 Safety Precautions.



●



Added 5.2 Preparing Cables.



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Added 5.3 Checking Before the Installation.



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Updated Step 2.



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Added 5.7 Installation Verification.



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Updated 5.8.2 Connecting the ESM Supply and Setting Parameters (ThirdParty Power System).



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Updated 7.1 Routine Maintenance.



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Added B FAQs.



Issue 05 (2022-06-30) ●



Updated Table 4-2.



Issue 04 (2021-12-08) ●



Optimized the content of the document.



Issue 03 (2021-09-26) ●



Optimized the content of the document.



Issue 02 (2021-08-06) ●



Updated A Warranty Rules.



Issue 01 (2021-07-05) This issue is the first official release.



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Contents



Contents About This Document................................................................................................................ ii 1 Safety Precautions...................................................................................................................1 1.1 General Safety.......................................................................................................................................................................... 1 1.2 Personnel Requirements....................................................................................................................................................... 4 1.3 Electrical Safety........................................................................................................................................................................ 4 1.4 Installation Environment...................................................................................................................................................... 6 1.5 Mechanical Safety................................................................................................................................................................... 7 1.6 Battery Safety........................................................................................................................................................................... 9



2 Product Description.............................................................................................................. 12 2.1 Product Overview..................................................................................................................................................................12 2.2 Application Scenario............................................................................................................................................................ 13 2.3 Appearance and Ports......................................................................................................................................................... 14 2.3.1 Appearance.......................................................................................................................................................................... 14 2.3.2 Panel and Ports.................................................................................................................................................................. 15 2.3.3 Activation and Startup..................................................................................................................................................... 18 2.3.4 Technical Specifications................................................................................................................................................... 19



3 Application..............................................................................................................................21 3.1 Parallel Connection.............................................................................................................................................................. 21 3.2 Online Capacity Expansion................................................................................................................................................ 22 3.3 Application in Class B Environments with Direct Ventilation................................................................................ 22 3.4 Low-Temperature Application...........................................................................................................................................22



4 Transportation and Storage................................................................................................ 24 4.1 Transportation Requirements........................................................................................................................................... 24 4.2 Storage and Recharging..................................................................................................................................................... 24 4.2.1 Storage Requirements......................................................................................................................................................24 4.2.2 Conditions for Judging Overdue Storage.................................................................................................................. 25 4.2.3 Storage with Low SOC (≤ 5%)...................................................................................................................................... 26 4.2.4 Operations Before Recharge.......................................................................................................................................... 26 4.2.5 Recharge Solution............................................................................................................................................................. 26 4.2.6 Recharge Qualification Standards............................................................................................................................... 27



5 Installation and Commissioning........................................................................................ 29 Issue 06 (2022-08-04)



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5.1 Preparing Tools...................................................................................................................................................................... 30 5.2 Preparing Cables................................................................................................................................................................... 30 5.3 Checking Before the Installation..................................................................................................................................... 31 5.4 Installation an ESM.............................................................................................................................................................. 32 5.5 Cable Connections (Huawei Power System)............................................................................................................... 33 5.6 Cable Connections (Third-Party Power System)........................................................................................................ 37 5.7 Installation Verification.......................................................................................................................................................39 5.8 Power-On Commissioning................................................................................................................................................. 41 5.8.1 Connecting the ESM Supply and Setting Parameters (Huawei Power System).......................................... 41 5.8.2 Connecting the ESM Supply and Setting Parameters (Third-Party Power System)................................... 45 5.9 Acceptance Criteria.............................................................................................................................................................. 45



6 ESM Antitheft Function....................................................................................................... 47 6.1 Activating the ESM Electronic Lock................................................................................................................................ 47 6.2 Deactivating the ESM Electronic Lock........................................................................................................................... 50 6.3 Intelligent Displacement Lock and IoT Module......................................................................................................... 52



7 Maintenance Guide...............................................................................................................53 7.1 Routine Maintenance.......................................................................................................................................................... 54 7.2 Replacing an ESM................................................................................................................................................................. 56 7.3 Troubleshooting..................................................................................................................................................................... 58



A Warranty Rules...................................................................................................................... 60 B FAQs..........................................................................................................................................62 C Acronyms and Abbreviations..............................................................................................64



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1 Safety Precautions



1



Safety Precautions



1.1 General Safety Statement Before installing, operating, and maintaining the equipment, read this document and observe all the safety instructions on the equipment and in this document. The "NOTICE", "CAUTION", "WARNING", and "DANGER" statements in this document do not cover all the safety instructions. They are only supplements to the safety instructions. The Company will not be liable for any consequence caused by the violation of general safety requirements or design, production, and usage safety standards. Ensure that the equipment is used in environments that meet its design specifications. Otherwise, the equipment may become faulty, and the resulting equipment malfunction, component damage, personal injuries, or property damage are not covered under the warranty. Follow local laws and regulations when installing, operating, or maintaining the equipment. The safety instructions in this document are only supplements to local laws and regulations. The Company will not be liable for any consequences of the following circumstances: ●



Operation beyond the conditions specified in this document



●



Installation or use in environments which are not specified in relevant international or national standards



●



Unauthorized modifications to the product or software code or removal of the product



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Failure to follow the operation instructions and safety precautions on the product and in this document



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Equipment damage due to force majeure, such as earthquakes, fire, and storms



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Damage caused during transportation by the customer



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Storage conditions that do not meet the requirements specified in this document



General Requirements ●



Before installing, operating, or maintaining the equipment, remove any conductive objects such as watches or metal jewelry like bracelets, bangles, and rings to avoid electric shock.



●



When installing, operating, or maintaining the equipment, wear dedicated protective gears such as insulation gloves, goggles, and safety clothing, helmet, and shoes, as shown in the following figure.



●



Use insulated tools or tools with insulated handles, as shown in the following figure.



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Follow the specified procedures for installation, operation, and maintenance.



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Ensure that bolts are tightened with a torque wrench and marked using red or blue color. Installation personnel mark tightened bolts in blue. Quality inspection personnel confirm if the bolts are tightened and then mark them in



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red. (The marks should cross the edges of the bolts, as shown in the following figure.)



●



Before installing, operating, or maintaining a cabinet, clean up any water, ice, snow, or other sundries on the top of the cabinet to prevent sundries from falling into the cabinet when you open the cabinet door.



●



Do not install, use, or operate outdoor equipment and cables (including but not limited to moving equipment, operating equipment and cables, inserting connectors to or removing connectors from signal ports connected to outdoor facilities, working at heights, and performing outdoor installation) in harsh weather conditions such as lightning, rain, snow, and level 6 or stronger wind.



●



Before handling a conductor surface or terminal, measure the contact point voltage and ensure that there is no risk of electric shock.



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Ensure that all slots are installed with boards or filler panels. Avoid hazards caused by hazardous voltages or energy on boards. Ensure that the air channel is normal, control electromagnetic interference, and prevent dust and other sundries on the backplane, baseplate, and boards.



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After installing the equipment, remove idle packing materials such as cartons, foam, plastics, and cable ties from the equipment area.



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In the case of a fire, immediately leave the building or the equipment area, and turn on the fire alarm bell or make an emergency call. Do not enter the building on fire in any case.



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Do not stop using protective devices. Pay attention to the warnings, cautions, and related precautionary measures in this document and on the equipment. Promptly replace warning labels that have worn out.



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Keep irrelevant people away from the equipment. Only operators are allowed to access the equipment.



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All cable holes should be sealed. Seal the used cable holes with firestop putty. Seal the unused cable holes with the caps delivered with the cabinet. The following figure shows the criteria for correct sealing with firestop putty.



●



Do not use solvents such as water, alcohol, or oil to clean electrical components inside or outside of a cabinet.



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Personal Safety ●



If there is a probability of personal injury or equipment damage during operations on the equipment, immediately stop the operations, report the case to the supervisor, and take feasible protective measures.



●



To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telecommunication network voltage (TNV) circuits.



●



Do not power on the equipment before it is installed or confirmed by professionals.



1.2 Personnel Requirements ●



Personnel who plan to install or maintain the equipment must receive thorough training, understand all necessary safety precautions, and be able to correctly perform all operations.



●



Only qualified professionals or trained personnel are allowed to install, operate, and maintain the equipment.



●



Only qualified professionals are allowed to remove safety facilities and inspect the equipment.



●



Personnel who will operate the equipment, including operators, trained personnel, and professionals, should possess the local national required qualifications in special operations such as high-voltage operations, working at heights, and operations of special equipment. NOTE ● Professionals: personnel who are trained or experienced in equipment operations and are clear of the sources and degree of various potential hazards in equipment installation, operation, maintenance ● Trained personnel: personnel who are technically trained, have required experience, are aware of possible hazards on themselves in certain operations, and are able to take protective measures to minimize the hazards on themselves and other people ● Operators: operation personnel who may come in contact with the equipment, except trained personnel and professionals



1.3 Electrical Safety Grounding ●



Equipment protective ground must have reliable electrical connection with the ground screws of metal enclosures (ground resistance: ≤ 0.1 ohm).



●



For the equipment that needs to be grounded, install the ground cable first when installing the equipment and remove the ground cable last when removing the equipment.



●



Do not damage the ground conductor.



●



Do not work on the equipment in the absence of a properly installed ground conductor.



●



For a device that uses a three-pin socket, ensure that the ground terminal in the socket is connected to the protection ground.



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AC and DC Power DANGER



● The power system is powered by high-voltage power sources. Direct or indirect contact (especially through damp objects) with the power sources may result in electric shock. ● Non-standard and improper operations may result in fire or electric shocks. ● Do not install or remove power cables with power on. Transient contact between the core of the power cable and the conductor will generate electric arcs or sparks, which may cause fire or personal injury. ●



If the power supply to the equipment is permanently connected, install an easily accessible disconnector at the exterior of the equipment.



●



Before making electrical connections, switch off the disconnector on the upstream device to cut the power supply if people may contact energized components.



●



If a "high electricity leakage" tag is attached on the equipment, ground the protective ground terminal on the equipment enclosure before connecting the AC input power supply; otherwise, electric shock as a result of electricity leakage may occur.



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Before installing or removing a power cable, turn off the power switch.



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Before connecting a power cable, check that the label on the power cable is correct.



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Before connecting the power supply, ensure that cable connections are correct.



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If the equipment has multiple inputs, disconnect all the inputs before operating the equipment.



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When routing cables, reserve at least 30 mm clearance between the cables and heat-generating components or areas. This prevents deterioration or damage to the cable insulation layer.



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Do not route cables behind the air intake and exhaust vents of the equipment.



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Ensure that cables meet the VW-1 flame spread rating requirements.



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Bind cables of the same type together. When routing cables of different types, ensure that they are at least 30 mm away from each other.



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Ensure that all cables are securely bound. Route and bind cables so that they appear neat and tidy and their cable sheaths are intact.



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If an AC input power cable is connected to the cabinet from the top, bend the cable in a U shape outside the cabinet and then route it into the cabinet.



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Ensure that the bending radius of each cable is at least five times the diameter of the cable.



●



When routing power cables, ensure that there is no coiling or twisting. Do not join or weld power cables. If necessary, use a longer cable.



Cabling



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Electrostatic Discharge (ESD) ●



When installing, operating, and maintaining the equipment, comply with the ESD protection regulations and wear the ESD clothing, gloves, and wrist strap.



●



When holding a board, hold its edge without touching any components. Do not touch the components with your bare hands.



●



Package boards with ESD packaging materials before storing or transporting them.



1.4 Installation Environment ●



To prevent fire due to high temperature, ensure that the ventilation vents or heat dissipation system are not blocked when the equipment is running.



●



Ensure that there are no acid, alkaline, or other corrosive gases in the installation place.



●



Do not place the equipment near heat sources or exposed fire sources, such as electric heaters, microwave ovens, roasters, water heaters, furnace fire, candles, or other places where high temperature may occur. Otherwise, the enclosure will melt or the equipment will heat up, which can cause a fire.



●



Install the equipment in an area far away from liquids. Do not install it under areas prone to condensation, such as under water pipes and air exhaust vents, or areas prone to water leakage, such as air conditioner vents, ventilation vents, or feeder windows of the equipment room. Ensure that no liquid enters the equipment to prevent faults or short circuits.



●



Before installing the equipment into a cabinet, ensure that the cabinet is secured and will not tilt or fall down due to loss of balance, which can cause personal injury or equipment damage.



●



Do not expose the equipment to flammable or explosive gas or smoke. Do not perform any operation on the equipment in such environments.



Installation at Heights Working at heights refers to operations that are performed at least 2 meters above the ground. Do not work at heights in any of the following situations: ●



Rainwater remains on steel pipes or other risky conditions exist. After the preceding conditions no longer exist, the safety director and relevant technical personnel need to check the involved equipment. Operators can begin working only after obtaining consent.



●



When working at heights, comply with local relevant laws and regulations.



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Only trained and qualified personnel are allowed to work at heights.



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Before working at heights, check the climbing tools and safety gears such as safety helmets, safety belts, ladders, springboards, scaffolding, and lifting equipment. If they do not meet the requirements, take corrective measures or disallow working at heights.



●



Wear personal protective equipment such as the safety helmet and safety belt or waist rope and fasten it to a solid structure. Do not mount it on an insecure moveable object or metal object with sharp edges. Make sure that the hooks will not slide off.



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● Set a restricted area and eye-catching signs for working at heights to warn away irrelevant personnel. ● Carry the operation machinery and tools properly to prevent them from falling off and causing injuries. ● Personnel involving working at heights are not allowed to throw objects from the height to the ground, or vice versa. Objects should be transported by tough slings, hanging baskets, elevated trolleys, or cranes. ● Do not perform operations on the upper and lower layers at the same time. If unavoidable, install a dedicated protective shelter between the upper and lower layers or take other protective measures. Do not pile up tools or materials on the upper layer. ● Ensure that guard rails and warning signs are set at the edges and openings of the area involving working at heights to prevent falls. ● Do not pile up scaffolding, springboards, or other sundries on the ground under the area involving working at heights. Do not allow people to stay or pass under the area involving working at heights. ● Inspect the scaffolding, springboards, and workbenches used for working at heights in advance to ensure that their structures are solid and not overloaded. ● Dismantle the scaffolding from top down after finishing the job. Do not dismantle the upper and lower layers at the same time. When removing a part, ensure that other parts will not collapse. ● Do not loiter when working at heights. Do not sleep at heights. ●



Any violations must be promptly pointed out by the site manager or safety supervisor and the involved personnel must correct their operations. Personnel who fail to comply with the requirements must stop the operations.



●



Operators who violate the safety regulations are responsible for accidents caused. The supervisor has to bear the responsibility accordingly.



1.5 Mechanical Safety Using Ladders ●



Use wooden or fiberglass ladders when you need to perform live working at heights.



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When a step ladder is used, ensure that the pull ropes are secured and the ladder is held firm.



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Before using a ladder, check that it is intact and confirm its load bearing capacity. Do not overload it.



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Ensure that the wider end of the ladder is at the bottom, or protective measures have been taken at the bottom to prevent the ladder from sliding.



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Ensure that the ladder is securely positioned. The recommended angle for a ladder against the floor is 75 degrees, as shown in the following figure. An angle ruler can be used to measure the angle.



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When climbing a ladder, take the following precautions to reduce risks and ensure safety: ●



Keep your body steady.



●



Do not climb higher than the fourth rung of the ladder from the top.



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To climb onto a roof, ensure that the ladder top is at least one meter higher than the roof line, as shown in the following figure.



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Ensure that your body's center of gravity does not shift outside the legs of the ladder.



Drilling Holes When drilling holes into a wall or floor, observe the following safety precautions:



NOTICE



Do not drill holes into the equipment. Doing so may affect the electromagnetic shielding of the equipment and damage components or cables inside. Metal shavings from drilling may short-circuit boards inside the equipment. ●



Wear goggles and protective gloves when drilling holes.



●



When drilling holes, protect the equipment from shavings. After drilling, clean up any shavings that have accumulated inside or outside the equipment.



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Moving Heavy Objects ●



Be cautious to avoid injury when moving heavy objects.



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When moving the equipment by hand, wear protective gloves to prevent injuries.



●



Move or lift the equipment by holding its handles or lower edges. Do not hold the handles of modules (such as power supply units, fans, and boards) that are installed in the equipment because they cannot support the weight of the equipment.



1.6 Battery Safety ●



When moving a heavy object outwards, be aware of unfixed or heavy objects on the cabinet to prevent injury.



●



Do not change the structure or installation sequence of ESMs without permission.



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Ground the ESM before powering it on. Otherwise, personal injury or equipment damage may occur.



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Before powering on the ESM, ensure that the ESM is secured by screws to prevent it from falling off during operation.



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During transportation, turnover, installation, cable connection, and maintenance, comply with the national and local laws, regulations, and relevant standards.



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Before installation or maintenance, wear goggles, rubber gloves, and protective clothing to avoid damage caused by electrolyte in the case of electrolyte overflow.



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Before installation or maintenance, ensure that there is no irritant or scorched smell around the ESM.



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Keep the ESM loop disconnected during installation and maintenance.



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Do not charge or discharge batteries that do not comply with local laws and regulations.



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The materials and tools prepared by the customer must comply with the national and local laws, regulations, and relevant standards.



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Secure ESM cables to the specified torque. Loose connections will result in excessive voltage drops or cause ESMs to burn out when the current increases.



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In an indoor scenario, you are advised to power on the ESM within seven days after unpacking. If the ESM cannot be powered on in time, place it in a dry indoor environment without corrosive gas.



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In an outdoor scenario, you are advised to power on the ESM within 24 hours after unpacking. If the ESM cannot be powered on in time, place it in a dry indoor environment without corrosive gas.



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Protect your skin and eyes from ESM electrolyte leakage. If you touch the electrolyte leakage, wash with clean water immediately and visit a doctor if the situation is serious.



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Electrolyte overflow may damage the equipment. It will corrode metal parts and boards, and ultimately damage the boards.



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Protect the ESM from mechanical vibration, collision, punctures, and strong impact. Otherwise, the ESM may catch fire.



●



Do not throw ESMs in fire because this may cause the ESMs to ignite.



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Do not expose batteries at high temperatures or around heat-generating sources, such as sunlight, fire sources, transformers, and heaters. Overheating batteries may cause fires or explosions.



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Do not install ESMs in positions where water leakage is likely to occur, such as areas near air conditioners or cable outlets in the equipment room.



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Do not immerse ESMs in water or expose them to rain.



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Do not operate ESMs or cables during thunderstorms.



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If an ESM is accidentally exposed to water, do not use it. Move it to a safe place for isolation and apply for spare parts in a timely manner.



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Do not charge a battery when its temperature is below the lower temperature threshold. Low-temperature and beyond-specification charging may result in lithium plating, which may cause internal short circuits and safety issues.



●



Replacing an ESM with an incorrect model may cause cross current and bias current, which will trigger ESM protection. Long-time operation with an incorrect model will result in cell or board faults, which may cause risks such as fire.



●



If the ESM loop is short-circuited, ESM protection will be triggered and the ESM cannot be charged or discharged. Long-time frequent short circuit can result in cell or board faults, which may cause risks such as fire.



●



An ESM communication failure alarm caused by reasons such as loose communications cable connection should be handled within 72 hours (default value, configurable in the range of 8 hours to 720 hours). Otherwise, the ESM will be internally locked, which may affect the ESM power backup.



●



Do not charge or discharge faulty lithium batteries. Store faulty lithium batteries separately.



Misoperations The following table lists some misoperations that should be avoided.



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Misoperations



Protection Description



Reverse connection



Before an ESM is activated: The ESM power cables must be correctly connected. If the ESM power cables are reversely connected, the ESM stays in sleep mode and will not start. If you forcibly activate the ESM (through the MANUAL ON/OFF button or power port), a protection alarm will be reported and the ALM indicator will turn on. After an ESM is activated: If the ESM power cables are reversely connected, the ESM may be damaged.



External short circuit



If the ESM loop is short-circuited, ESM protection will be triggered and the ESM cannot be charged or discharged. Long-time frequent short circuit can result in cell or board faults, which may cause risks such as fire.



Serial connection



ESMs cannot be connected in series. If ESMs are connected in series forcibly, ESM protection will be triggered. Operating outside the protection range will result in board or battery damage and battery protection failure, which may cause risks such as fire.



Gas Composition ●



The ESM is an enclosed battery system and will not release any gases under normal operations.



●



If the ESM is severely misused, for example, being burned or used under thunderstruck, it may be damaged, resulting in electrolyte leakage. The electrolyte of organic carbonate nature may produce CO2, CO, and N2 after being burned.



Battery Recycling ●



Dispose of waste batteries in accordance with local laws and regulations. Do not dispose of batteries as household waste. Improper disposal of batteries may result in environmental pollution.



●



If a battery leaks or is damaged, contact technical support or a battery recycling company to dispose of the battery.



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If the batteries are out of service life, contact a battery recycling company for disposal.



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Do not expose waste batteries to high temperatures or direct sunlight.



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Do not expose waste batteries to high humidity or corrosive environments.



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2 Product Description



2



Product Description



2.1 Product Overview The ESM is an energy storage unit composed of lithium batteries. It features better charge and discharge performance, longer service life, and less self-discharge loss than ordinary batteries. An ESM consists of electrochemical cells, an energy storage management unit (ESMU), power and signal terminals, and mechanical parts. It can be used as an independent 48 V unit, supports the mixed use of old and new batteries, and can collaborate with third-party power systems. Table 2-1 Nominal ESM voltage and capacity Product Model



Nominal Voltage



Rated Capacity



ESM-48100U5



48 V



100 Ah



Features: ●



Parallel connection for power expansion: The maximum power (P) of N ESMs connected in parallel can reach 24 kW. For details, see 3.1 Parallel Connection.



●



Application in class B environments with direct ventilation: The ESM can be used in indoor environments where the ambient temperature and humidity are not controlled or outdoor environments (with simple shielding measures such as awnings) where the humidity can reach 100%.



●



Support for third-party power systems: The ESM implements lithium battery self-management so that it can be used with third-party power systems.



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Maintenance-free: The maintenance-free feature in the use of the ESM reduces the costs of battery O&M and the frequency of site visits.



●



Long service life: The ESM service life is two to three times the life of common lead-acid batteries. The battery state of health (SOH) and state of charge (SOC) can be monitored online in real time. These features improve the reliability of site power backup.



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EMC: –



CE: EN 55032, Class A



–



RE: EN 55032, Class B



Function ●



Status monitoring: monitors the electrochemical cell voltage and temperature as well as the ESM voltage and current.



●



Alarm management: generates alarms when overvoltage, undervoltage, overcurrent, overtemperature, or undertemperature occurs.



●



Protection against exceptions: protects against overvoltage, undervoltage, overcurrent, short circuits, overtemperature, undertemperature, electrochemical cell faults, and hardware faults.



●



Information reporting: provides a northbound CAN/RS485 port through which alarms and status data are reported.



●



Parallel connection: Multiple ESMs can be connected in parallel. CAN communication supports parallel connection of up to 32 ESMs, and RS485 communication supports parallel connection of up to 16 ESMs.



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Balance: supports real-time electrochemical cell balancing.



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E-label: identifies the ESM using an electronic label.



●



Antitheft: provides the software-based antitheft function when being used with specified Huawei power systems.



●



Forcible disconnection: Users can disconnect the external power supply to the PWR port and hold down the MANUAL ON/OFF button for 5s to power off the ESM forcibly.



●



Maintenance mode: used for ESM replacement. Users can hold down the MANUAL ON/OFF button for 15s to enter the maintenance mode so that the ESM can be replaced safely and reliably.



●



Activation: The ESM can be activated through the PWR port, power port, and the MANUAL ON/OFF button.



2.2 Application Scenario An ESM alone can provide backup power in the power system. Inside an ESM, the BMS monitors the temperature, current, and voltage, provides protection against overvoltage, undervoltage, overcurrent, short circuit, overtemperature, and undertemperature, and reports the ESM running status and alarm information through a communications port that supports both the CAN and RS485 protocols.



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Figure 2-1 Typical ESM application scenario



2.3 Appearance and Ports 2.3.1 Appearance Figure 2-2 ESM exterior



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2.3.2 Panel and Ports Figure 2-3 Panel and ports



Table 2-2 Port pin definitions No.



Silk Screen



Item



Description



1



GND



Protective ground



M6 screw



2



DO1



ESM dry contact output



Alarm output dry contact; configurable (if the dry contact is open, an alarm is reported by default). For details, see Table 2-4. 1. Used for information reporting and communication cascading.



DO2



3



COM_ IN



Communications port



4



COM_ OUT



Communications port



5



RUN



Run indicator



ALM



Alarm indicator



CHG



Charge indicator



DCHG



Discharge indicator



SOC



SOC indicator



6



MANUAL ON/OFF



Button for manual power-on/off



A contact button used for manual power-on/off and maintenance. For details, see 2.3.3 Activation and Startup.



7



PWR



ESMU port for connecting to an external power source



The ESM can be activated if the PWR port is supplied with a voltage of 43.2– 58 V. For details, see 2.3.3 Activation and Startup.



8



+



ESM positive terminal



Positive and negative ports of the ESM. Secured by M6 screws. Appropriate OT terminals should be used. The required torque is 4.5-5.5 N·m and the recommended cable size is 25 mm2. If the ESM is used at a temperature below



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2. Use RJ45 terminals. For details, see Table 2-3. For the diagram, see Figure 2-4. For details about functions, see Table 2-5.



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No.



2 Product Description



Silk Screen



Item



Description



-



ESM negative terminal



45°C, the cable size can be smaller but should be at least 16 mm2.



Table 2-3 Pin definitions of communications ports Pin Definition



RJ45 Pin



Signal



Description



Remark



1



RS485 T+



RS485 transmission +



2



RS485 T-



RS485 transmission –



3



NC



Reserved



4



RS485 R+



RS485 reception +



● Four-wire RS485 communications, complying with the Modbus protocol. ● Baud rate: 9600 bit/s.



5



RS485 R-



RS485 reception –



6



NC



Reserved



-



7



CANH



Positive terminal for CAN communications



● Complies with the CAN protocol.



8



CANL



Negative terminal for CAN communications



● Used to report alarms to a monitoring unit and exchange data between ESMs connected in parallel.



DO1 and DO2 Ports Table 2-4 DO1 and DO2 port definitions Silk Screen



Definition



Description



Alarm Status



DO1



Fault, major alarm



If the ESM raises one of the following alarms, the dry contact supplies an alarm signal:



Configurable (By default, an alarm is reported when the dry contact is open)



Cell voltage sampling fault, straight-through short circuit fault, straight-through open circuit fault, cell fault, reverse connection protection, module internal temperature protection, cell temperature sampling exception, discharge overcurrent lockout alarm, theft alarm, charge low temperature protection, charge high temperature protection, charge overcurrent protection, discharge low temperature protection, discharge high temperature protection, discharge overcurrent protection, and SN conflict Issue 06 (2022-08-04)



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Silk Screen



Definition



Description



DO2



Overload warning, overdischarge protection



If the ESM raises one of the following alarms, the dry contact supplies an alarm signal:



Alarm Status



Battery string discharge undervoltage protection, single-cell discharge undervoltage protection, battery string discharge undervoltage alarm, cell discharge undervoltage alarm, and discharge overcurrent warning



LED Indicator Figure 2-4 LED indicator



Table 2-5 LED indicator description Silk Screen



Item



Color



Description



RUN



Run indicator



Green



Steady on: Communication is normal (including board startup, self-check, software loading, and board power-on when not loaded; excluding sleep when the power port or PWR port is energized). Off: The ESM is in sleep mode. Blinking at long intervals: The LUI is querying data or is loading. Blinking at short intervals: Communication is interrupted.



ALM



Alarm indicator



Red



Steady on: There is a fault or major alarm. Off: There is no fault or major alarm. Blinking slowly: Anti-theft lock.



CHG DCHG



Charge indicator



Green



Discharge indicator



Green



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Steady on: The ESM is being charged. Off: The ESM is open-circuited or discharging. Steady on: The ESM is discharging. Off: The ESM is open-circuited or being charged.



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Silk Screen



Item



Color



Description



SOC



SOC indicators



Green



1. 0–24% capacity ● 25% indicator: blinking ● Other SOC indicators: off 2. 25%–49% capacity ● 25% indicator: steady on ● 50% indicator: blinking ● Other SOC indicators: off 3. 50%–74% capacity ● 25% indicator: steady on ● 50% indicator: steady on ● 75% indicator: blinking ● Other SOC indicators: off 4. 75%–99% capacity ● 25% indicator: steady on ● 50% indicator: steady on ● 75% indicator: steady on ● 100% indicator: blinking 5. 100% capacity The four SOC indicators are steady on.



Notes: ● Major alarm: The ESM needs to be maintained immediately. ● Minor alarm: The ESM does not require maintenance, but sends a reminder to remote maintenance personnel. ● Blinking at long intervals: on for 1s and then off for 1s ● Blinking at short intervals: on for 0.125s and then off for 0.125s ● SOC indicator off and other indicators blinking: The ESM has entered the maintenance mode. ● At the ambient temperature of 25°C±2°C, charge the lithium battery to 100% SOC, and discharge it at 0.5C until undervoltage protection is triggered. During the discharge, use a high-precision power analyzer to measure the current and Ah value on the electrochemical cells and record the SOC value and discharge Ah value on the BMS periodically (every 10 minutes is recommended). After the discharge ends, calculate the actual SOC of each record point based on the actual accumulated discharge power and compare the calculated SOC with the BMS SOC to verify the accuracy. After four hours of storage, perform the next charge and discharge cycle (full charge and discharge cycle at 0.1C–0.5C). The SOC accuracy after two cycles must be within ±5%. ● ESM in sleep mode: The Alarm indicator is off except for reverse-connection protection.



2.3.3 Activation and Startup The ESM can be activated in three modes. After being activated, the ESM switches from sleep mode to disconnected mode. Issue 06 (2022-08-04)



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●



Activation through the PWR port: Supply a DC voltage of 43.2–58 V to the PWR port on the ESM panel for at least 5s.



●



Activation through the MANUAL ON/OFF button: Hold down the MANUAL ON/OFF button on the ESM panel for at least 5s and less than 15s.



●



Activation through the power port: Supply a DC voltage of 43.2–58 V to the power port on the front panel for at least 5s. NOTE 1. The MANUAL ON/OFF button is a contact button. The interval for pressing the button should be greater than 0.5s; otherwise, the operation is ineffective. 2. If the ESM in charge state is deactivated through the MANUAL ON/OFF button, you can only activate the ESM through the MANUAL ON/OFF button. If the ESM in discharge or disconnected state is deactivated through the MANUAL ON/OFF button, you can activate the ESM through the PWR port or power port when the external busbar has no voltage. 3. If the intelligent displacement lock antitheft function is enabled for the ESM, the shutdown and maintenance functions of the MANUAL ON/OFF button will become ineffective. To use this button, you need to disable the intelligent displacement lock/GPS antitheft function. 4. If the intelligent displacement lock antitheft function is enabled for the ESM, the default cell pack undervoltage protection threshold of the ESM will increase to 46 V.



2.3.4 Technical Specifications Table 2-6 Technical specifications Item



Specifications



Dimensions (W x D x H)



● 442 mm x 396 mm x 130 mm (excluding mounting ears) ● 482 mm x 396 mm x 130 mm (including mounting ears)



Weight



≤43 kg



Nominal voltage



48 V DC



Equalized charging voltage



56.4 V DC



Float charging voltage



54.5 V DC



Max. charging/ discharging current limit



100 A/100 A@35°C



Max. charging/ discharging power



4800 W



Operating ambient temperature



● Charge: 0°C to 45°C



Relative Humidity



5%–95%



Atmospheric



61 kPa–113 kPa



Installation mode



Installed in a 19-inch rack



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● Discharge: –20°C to +45°C



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2 Product Description



Item



Specifications



Maintenance mode



Maintained from the front



Altitude



0–4000 m (When the altitude ranges from 2000 m to 4000 m, the highest operating temperature decreases by 1°C for each additional 200 m.)



Ripple and noise



≤200 mV



IP rating



IP20



Other requirements



Indoor scenario: ● There is no conductive dust, corrosive gas, or explosion hazard. ● Dust, corrosive substances, pests, molds, and other indicators should be controlled in accordance with class 3.1 requirements in ETSI EN 300 019-1-3 (V2.3.2 or a later version). Outdoor scenario: ● There is no conductive dust, corrosive gas, or explosion hazard. ● Dust, corrosive substances, pests, molds, and other indicators should be controlled in accordance with class 4.1 requirements in ETSI EN 300 019-1-4 (V2.2.1).



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3 Application



3



Application



3.1 Parallel Connection



Table 3-1 Power derating coefficients for parallel connection Number of Parallel ESMs



2



3



4



5



6



7



8



9



......



16



Derating Coefficient



0.70



0.60



0.55



0.50



0.50



0.45



0.40



0.40



......



0.40



NOTE ESMs can be connected in parallel to increase the backup time or power. ● Maximum current of N ESMs connected in parallel = N x Derating Coefficient x Imax, where Imax is the maximum current allowed for the ESMs. Take four ESMs connected in parallel as an example: Imax = 4 x 0.55 x 100 A = 220 A. ● If the backup power of ESMs is greater than 24 kW, the backup time is prolonged, but the backup power remains unchanged.



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3 Application



3.2 Online Capacity Expansion In ESM maintenance mode, the system capacity can be expanded online without disconnecting the battery supply. In this way, the site will not break down in case of a mains power failure during capacity expansion.



3.3 Application in Class B Environments with Direct Ventilation The ESM can be used in class A or B environments with direct ventilation but cannot be used in class C or D environments without temperature control devices. Air conditioner cabinets with high protection levels (IP55 or higher) are recommended if ESMs are deployed in class C or D environments. Environments subject to atmospheric corrosion can be classified into four categories: ●



Class A environment (controlled environment): indoor environment where the ambient temperature and humidity are controlled (including rooms where people live) and the relative humidity of air is controlled below 65%.



●



Class B environment (uncontrolled environment): indoor environment where the ambient temperature and humidity are not controlled or outdoor environments (with simple shielding measures) where the humidity can reach 100%.



●



Class C environment (harsh environment): outdoor land environment (with simple shielding measures) near seas or pollution sources. If a site is near a sea, it is 0.5–3.7 km away from the sea. If a site is near a pollution source, it is at most 3.7 km away from salt lakes, 3 km away from heavy pollution sources such as smelteries, coal mines, and thermal power plants, 2 km away from medium pollution sources such as chemical, rubber, and galvanization industries, or 1 km away from light pollution sources such as packing houses, tanneries, and boiler rooms.



●



Class D environment (sea environment): outdoor land environment (with simple shielding measures) at most 500 m away from the seashore or environment on the sea.



3.4 Low-Temperature Application ●



Low-temperature charge: The ESM does not support battery charging at a temperature below 0°C. When the battery temperature is below 0°C, the ESM will shut down the charging loop to disable charging. When the ESM is used in an environment below 0°C, a heater needs to be added in the cabinet, and batteries can be charged after the battery temperature rises to 3°C or above.



●



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Low-temperature discharge: The ESM does not support battery discharging at a temperature below –20°C. When the battery temperature is below –20°C, the ESM will turn off the discharging loop to disable discharging. Copyright © Huawei Technologies Co., Ltd.



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When the ESM is used in an environment below –20°C, a heater needs to be added in the cabinet, and batteries can discharge after the battery temperature rises to –17°C or above.



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4 Transportation and Storage



4



Transportation and Storage



4.1 Transportation Requirements The product passes the certifications of the UN38.3 (UN38.3: Section 38.3 of the sixth Revised Edition of the Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria) and SN/T 0370.2-2009 (Part 2: Performance Test of the Rules for the Inspection of Packaging for Exporting Dangerous Goods). This product belongs to class 9 dangerous goods. The product can be delivered to the site directly and transported by land and water. The packing case must be secured for transportation, compliant with related national standards, and printed with marks such as anti-collision and moisture prevention. Dispose of waste ESMs in strict accordance with local laws and regulations. Protect the packing case with the product from the following situations: ●



Being dampened by rains, snows, or falling into water



●



Falling or mechanical impact



●



Being upside-down or tilted



4.2 Storage and Recharging 4.2.1 Storage Requirements 1.



Place ESMs according to the signs on the packing case during storage. Do not put ESMs upside down or sidelong.



2.



Stack ESM packing cases by complying with the stacking requirements on the external package.



3.



The storage environment requirements are as follows:



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–



Ambient temperature: 0–40°C, recommended storage temperature: 20– 30°C



–



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4 Transportation and Storage



–



Dry and clean environment with proper ventilation



–



Away from corrosive and organic substances (including gas)



–



Away from direct sunlight



–



At least 2 meters away from heat sources (such as a heating radiator)



4.



The warehouse keeper should collect ESM storage information every month and periodically report the ESM inventory information to the planning department. The ESMs that have been stored longer than specified duration should be recharged in a timely manner.



5.



Regional offices or organizations should not store ESMs or communication equipment configured with ESMs. Prior approval should be obtained for any requirements on ESM storage.



6.



ESMs should be delivered based on the "first in, first out" rule.



7.



Install ESMs in a dry, clean, and ventilated environment that is free from sources of strong infrared radiation, organic solvents, and corrosive gases. Do not expose the ESMs to sunlight or water and keep them far away from sources of ignition.



4.2.2 Conditions for Judging Overdue Storage It is recommended that the ESM not be stored for a long period. It should be used soon after being deployed onsite. Table 4-1 Storage requirements Required Storage Temperature



Actual Storage Temperature



Recharge Interval



Remarks



0°C–40°C



0°C ≤ T ≤ 30°C



12 months



30°C < T ≤ 40°C



8 months



Within the recharge interval: Use the ESM as soon as possible. Reaching the time for recharge: Recharge the ESMs. The total storage duration should not exceed the warranty period.



NOTE 1. If ESMs have been stored overdue, promptly report the event to the department leader. 2. Dispose of bulging ESMs irrespective of how long they have been stored. 3. The storage duration (t) starts from the latest charge time marked on the ESM packing case. The latest charge time is updated after every charge. 4. If an ESM is qualified after charge, mark the latest charge time and the next recharge time on the ESM packing case. The next recharge time is 8 months (stored above 30°C) or 12 months (stored below 30°C) later than the latest charge time. The total storage duration should not exceed the warranty period.



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4.2.3 Storage with Low SOC (≤ 5%) ESMs have static power consumption and self-discharge loss after power-off. In actual application scenarios, avoid storing an ESM with low SOC (≤ 5%). If storing an ESM with low SOC is unavoidable, limit the storage duration to 30 days at 25°C or 15 days at 45°C. Promptly recharge the ESM after the storage. Otherwise, the ESM may be damaged and scrapped due to overdischarge. The following situations may cause storage of ESMs in discharge state: 1.



After the site power supply is disconnected due to a mains outage, the power supply is not recovered for a long time because the faults (such as cable faults) cannot be rectified in a timely manner.



2.



After installation and commissioning are complete, the mains power is switched off directly without powering off the ESM. The ESM enters the low power mode only after being completely discharged, and the interval for onsite acceptance check is long.



3.



Other reasons that prevent the ESM from entering the low power mode normally.



4.2.4 Operations Before Recharge ●



Check the ESM appearance.



●



Dispose of bulging ESMs.



●



Dispose of damaged or misshapen ESMs.



●



Dispose of leaking ESMs.



●



Polish ESM terminals using sandpaper if they are corroded.



4.2.5 Recharge Solution Recharge ESMs that pass tests using either of the following solutions based on site requirements. Recharge ESMs using a power system: 1.



Identify qualified ESMs that can be recharged.



2.



Install the ESMs and connect cables to the ESMs by referring to the quick installation guide of the related power system.



3.



Use the power system to recharge the ESMs. Table 4-2 Recharge parameter settings



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Recharge Parameter



Setting Value



Charge voltage



56.4 V



Charge current



Use the default charge current limit coefficient. The maximum charge current is 100 A.



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4.



Recharge Parameter



Setting Value



Termination condition



The charge duration is greater than 10 minutes and the charge current is less than 0.02 C, or the ESM is protected.



Hold down the MANUAL ON/OFF button for at least 5s and less than 15s. Wait all indicators on the front panel turn off and then remove the cables. Place the ESM in the original packing case. Modify the latest charge time and the next recharge time marked on the original packing case.



Recharge the ESMs of a purchased or borrowed DC regulated power supply that supports 48 V charge by performing the following operatio 1.



Connect the positive and negative poles of an ESM to the output positive and negative terminals on a DC regulated power supply respectively. Figure 4-1 Connecting cables between an ESM and DC regulated power supply equipment



2.



Set charge parameters for the DC regulated power supply equipment. For details, see Table 4-2.



3.



Hold down the MANUAL ON/OFF button for at least 5s and less than 15s. Wait all indicators on the front panel turn off and then remove the cables. Place the ESM in the original packing case. Modify the latest charge time and the next recharge time marked on the original packing case.



CAUTION



● ESM can be activated through power cables. ● Do not perform operations with power on when connecting the recharge cables.



4.2.6 Recharge Qualification Standards Table 4-3 Recharge qualification standards Required Recharge End Voltage



Required Voltage After Open-Circuit for 8 Hours



≥ 51 V



≥ 48 V



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4 Transportation and Storage NOTE 1. For the ESM that is qualified after recharge, hold down the MANUAL ON/OFF button for at least 5s and less than 15s. Wait until all indicators on the front panel turn off and then remove the cables. Place the ESM in the original packing case. Mark the latest charge time and the next recharge time (the next recharge time is 8 months if stored above 30°C or 12 months if stored below 30°C later than the latest charge time) on the packing case. Packed ESMs should be used as soon as possible. 2. If the ESM is not qualified after recharge, recharge it again. If the ESM is still not qualified, dispose of it.



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5 Installation and Commissioning



5



Installation and Commissioning



Prerequisites It is recommended that ESMs are provided by the same manufacturer, of the same model, and in the same lot. Comply with regulations and warnings issued by the ESM manufacturer. Before installing ESMs, ensure that the battery circuit breakers in the power system are OFF or that the battery fuses are removed.



DANGER



● Smoking and sparks are prohibited near ESMs. ● Use installation tools with insulated handles. Otherwise, the ESMs may burn out and injury may be caused. ● Before handling ESMs, wear goggles, rubber gloves, and protective clothes. Remove any conductive objects, such as watches, bracelets, bangles, and rings. ● Do not use metal to simultaneously touch two or more terminals of the ESM or simultaneously touch a terminal of the ESM and a grounded object (for example, the ESM cabinet). Otherwise, short circuits will occur, which may produce sparks. ● The power system or battery system site should be equipped with qualified fire extinguishing facilities, such as fire extinguishing sands and powder fire extinguishers. ● Do not place installation tools on the ESM when installing the ESM. After the installation, do not place foreign matter on or around the ESM. ● Segregate the installation place, arrange dedicated guardians, and place warning signs of "danger" and "high voltage" above the ESM and separators. ● Wear anti-high-voltage clothes (including gloves and shoes) according to the high voltage safety requirements, and wear ESD gloves and wrist straps. ● Use dedicated insulation tools. Metal tools such as torque wrenches must be insulated before they are used.



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5.1 Preparing Tools Required tools and materials are available. NOTICE



● Use insulated tools. Tools in the following figure are for reference only. ● After installing power terminals, periodically check whether they are tightened, and whether rust, corrosion, or other foreign objects exist. If necessary, clean the terminals and tighten the bolts. If the battery bolts are loosely connected, the connection voltage drop may be too high, or the battery may be burnt when the current is large.



5.2 Preparing Cables All cables must comply with local regulations, standards, and customer requirements. The cross-sectional area of a power cable depends on the current that flows through it and the allowed voltage drop. Issue 06 (2022-08-04)



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The copper cable specifications are for reference only. Determine proper cables based on site requirements.



NOTICE



Do not connect aluminum cables to ESMs directly to prevent electrochemical corrosion of copper and aluminum. Table 5-1 Preparing cables Cable Type



Maximum Operating Current (A)



Minimum CrossSectional Area (mm2)



Ground cable



N/A



6



Battery power cable



100 A



25



NOTE ● The size data in the table is applicable when the ambient temperature is 30°C (in air) and only cables in a single loop are involved. ● When the ambient temperature is not 30°C or cables in multiple loops are routed together, use cables with larger cross-sectional areas if the cabling distance is long. ● Power cables should be able to withstand a temperature of at least 90°C.



5.3 Checking Before the Installation Step 1 Check the installation environment. Table 5-2 Installation environment checklist No.



Item



Result



1



The installation clearance meets the requirements.



□ Yes □ No



2



The bearing capacity of the installation site meets the requirements.



□ Yes □ No



3



The installation environment meets the requirements.



□ Yes □ No



4



The cables and installation tools meet the requirements.



□ Yes □ No



5



Fire extinguishing facilities, such as firefighting sands and powder fire extinguishers, are available onsite and in compliance with local laws and regulations.



□ Yes □ No



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Step 2 Check that the battery package is intact. If any damage is found, notify the carrier and supplier immediately. Step 3 Unpack the equipment and check that the equipment is intact. 1.



Visually inspect the battery appearance for shipping damage. If any shipping damage is found, take photos and notify the carrier and supplier immediately.



2.



Check that all fittings comply with the packing list. If there is any discrepancy, keep a record and contact the supplier immediately.



NOTICE



– In an indoor scenario, you are advised to power on the ESM within seven days after unpacking. If the ESM cannot be powered on in time, place it in a dry indoor environment without corrosive gas. – In an outdoor scenario, you are advised to power on the ESM within 24 hours after unpacking. If the ESM cannot be powered on in time, place it in a dry indoor environment without corrosive gas. ----End



5.4 Installation an ESM Procedure Step 1 Install an ESM according to the quick installation guide and check whether floating nuts are installed on both sides of the rack. If not installed, install the floating nuts delivered with the cabinet on both sides of the rack. Step 2 Push the ESM into the cabinet and fasten the ESM. Figure 5-1 Installing an ESM



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NOTICE



● The weight of an ESM-48100U5 is about 43 kg. Check the load-bearing capability of the rack tray before installation. ● ESM-48100U5 is 396 mm deep. Check the rack depth before installation. ● The ESM can be installed in 19-inch mode. Guide rails and trays are installed. Ensure that the load-bearing capacity of the ESM meets requirements. This section uses guide rails as an example. ● It is recommended that ESM be installed from the bottom to the top. ● If a third-party cabinet is deployed, reserve 4 U space for each battery, It is not supported to stack ESMs or makean ESM land on its back panel. ● If a Huawei cabinet is deployed, refer to the installation guide of the cabinet to install batteries. Figure 5-2 Correct installation diagram



----End



5.5 Cable Connections (Huawei Power System) Prerequisite The ESM has been correctly installed. The protective gloves, socket wrench, and cabinet door key are available.



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Procedure Step 1 Wear the protective gloves. Step 2 Install the ESM ground cable. Figure 5-3 Installing the ESM ground cable



(1) Ground bar



Step 3 Install the ESM communications cables. NOTE After the ESM communications cables are installed, connect a build-out resistor to the COM_OUT port of the last ESM.



Figure 5-4 Installing the ESM communications cables (Method 1)



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Figure 5-5 Installing the ESM communications cables (Method 2)



Step 4 Install the PWR activation cables of the ESM.



CAUTION



To install activation cables for Huawei power systems (except 57 V power systems), perform the following steps. 1.



Locate the ESM activation cable and cable terminals in the fitting bag.



2.



Install the activation cable at the terminals.



3.



Install one end of the activation cable at a PWR port of the ESM.



4.



Install the other end of the activation cable at a load route (BLVD route recommended, the recommended circuit breaker capacity of the activation cable ranges from 6 A to 32 A) and the corresponding RTN+ busbar in the power system.



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Figure 5-6 Installing the PWR activation cables for the ESM



Step 5 Assemble an OT terminal with the ESM power cable. Figure 5-7 Preparing an OT terminal



(1) Cable



(2) OT terminal



(4) Hydraulic pliers



(5) Heat gun



(3) Heat shrink tubing



Step 6 Install negative and positive power cables of the ESM.



CAUTION



● When installing the ESM power cable, ensure that the protruding part of the OT terminal on the cable faces outward. ● Do not connect two or more cables to the positive and negative power ports of the ESM in parallel.



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Figure 5-8 Connection of ESM power cables



Figure 5-9 Installing negative and positive power cables for the ESM



Step 7 Remove the protective gloves and pack up all tools. ----End



5.6 Cable Connections (Third-Party Power System) Prerequisite The ESM has been correctly installed. The protective gloves, socket wrench, and cabinet door key are available.



Procedure Step 1 Wear the protective gloves. Step 2 Install the ESM ground cable.



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Figure 5-10 Installing the ESM ground cable



(1) Ground bar



Step 3 Install the ESM communications cables. NOTE After the ESM communications cables are installed, connect a build-out resistor to the COM_OUT port of the last ESM.



Figure 5-11 Installing the ESM communications cables



Step 4 Assemble an OT terminal with the ESM power cable. Figure 5-12 Preparing an OT terminal



(1) Cable



(2) OT terminal



(4) Hydraulic pliers



(5) Heat gun



(3) Heat shrink tubing



Step 5 Install negative and positive power cables of the ESM. Issue 06 (2022-08-04)



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● When installing the ESM power cable, ensure that the protruding part of the OT terminal on the cable faces outward. ● Do not connect two or more cables to the positive and negative power ports of the ESM in parallel.



Figure 5-13 Connection of ESM power cables



Figure 5-14 Installing negative and positive power cables for the ESM



Step 6 Remove the protective gloves and pack up all tools. ----End



5.7 Installation Verification After all devices are installed, verify the installation.



Checking the Environment Table 5-3 Environment checklist No.



Item



Result



1



There are no unnecessary adhesive tape or cable ties on cables.



□ Yes □ No



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No.



Item



Result



2



There are no adhesive tapes, cable ties, paper scraps, or packing materials around the device.



□ Yes □ No



Checking Electrical Connections Table 5-4 Electrical connection checklist No.



Item



Result



1



All the ground cables prepared onsite contain copper core wires and have correct diameters. No switches or fuses are installed on the cables and no short-circuit occurs.



□ Yes □ No



2



The ground cables are securely and correctly connected, and the screws are tightened. No shortcircuit occurs on power inputs or outputs.



□ Yes □ No



3



Power cables and ground cables are not coiled and extra parts are cut off.



□ Yes □ No



4



Connectors for power cables and ground cables are soldered or crimped securely.



□ Yes □ No



5



Bare cables and terminal handles are completely wrapped with heat-shrink tubings.



□ Yes □ No



6



Flat washers and spring washers are securely installed for all OT terminals, and all OT terminals are intact and properly connected.



□ Yes □ No



7



Ensure that bolts are tightened with the specified torque and marked in red and blue after doublecheck.



□ Yes □ No



Cable Checklist Table 5-5 Cable connection checklist No.



Item



Result



1



All cable joints are secured properly, especially for signal cables and cable connectors.



□ Yes □ No



2



Cables are bound neatly without twists or excessive bends. Cable ties are evenly spaced and properly tightened in the same direction.



□ Yes □ No



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No.



Item



Result



3



Power cables, ground cables, and signal cables are bound separately.



□ Yes □ No



4



Cables are routed in a way convenient for future maintenance and expansion.



□ Yes □ No



5



The excess of cable ties on indoor cables is trimmed off without burrs, and the excess of cable ties on outdoor cables are cut with a margin of 3 mm to 5 mm.



□ Yes □ No



6



Unused ports are protected.



□ Yes □ No



7



Cable labels are properly and securely attached in the same direction.



□ Yes □ No



5.8 Power-On Commissioning NOTICE



● Performing the power-on procedure provided in this section may result in power failure or alarms. Inform the alarm center before and after the procedure. ● The power-on procedure involves various technologies and should be performed by trained personnel according to the power-on instructions. ● During operations, stand on dry insulating material and do not wear any conductors such as necklaces or watches. Use insulated tools during power-on. ● Do not establish contact between electrical points that have different voltages. ● When you are performing operations and do not want others to operate, attach the label "Currently being serviced. Do not switch on." to the power distribution equipment. ● During the power-on procedure, shut down the system immediately if any fault is detected. Rectify the fault and proceed with the procedure. ● Power on the ESM when the AC power supply is in good condition.



5.8.1 Connecting the ESM Supply and Setting Parameters (Huawei Power System) Connecting the Lithium Battery Supply Step 1 Switch on the battery circuit breakers and the circuit breaker connected to activation cables in the power system.



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NOTICE



If the Huawei power monitoring module is connected to the ESM for the first time, the monitoring module will restart automatically because battery management parameters need to be switched to the ESM. Step 2 When multiple ESMs connected in parallel are powered on, observe the RUN indicator on each ESM panel. Communication is normal if the indicator is steady on and is not established if it blinks fast. Check the communications cables between ESMs and rectify the fault. Step 3 When the ESMs are communicating with the monitoring module, check whether the communication is normal. If the RUN indicator on an ESM is steady on, the ESM communicates properly with the monitoring module. If the indicator blinks fast, the communication is interrupted. In this case, check that the communications cable is properly connected. Step 4 Observe the ESM for 15 minutes. Ensure that it is working properly (the ALM indicator is off and the RUN indicator is steady on). ----End



Setting Parameters NOTICE



● Set parameters as follows for the ESMs running in a power system. ● A Huawei power system automatically identifies ESMs and sets battery parameters. There is no need to set the parameters onsite. To check the ESM running status or change the charge current limit coefficient, log in to the WebUI or LCD of the Huawei power system. ● Contact technical support to obtain the version mapping between the ESM software and the Huawei power system monitoring tool or local maintenance tool.



LCD Table 5-6 Setting ESM parameters Main Menu



Second-Level Menu



Third-Level Menu



Fourth-Level Menu



Setting



Value Range



Parameters Settings



Battery



Basic Parameters



Charge Limit Coef



Set based on the site requirements



0.05C10~1.0C 10



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WebUI Step 1 Remove the cable connected to the FE port on the SMU. Use a network cable to connect the network port on the PC to the FE port on the SMU. Step 2 Configure the PC IP address and the SMU IP address in the same network segment. For example, if the SMU has an IP address of 192.168.0.10, a subnet mask of 255.255.255.0, and a default gateway of 192.168.0.1, set the IP address to 192.168.0.11, subnet mask to 255.255.255.0, and default gateway to 192.168.0.1 on the PC. NOTE ● The default IP address of the SMU is 192.168.0.10, the default subnet mask is 255.255.255.0, and the default gateway is 192.168.0.1. ● If the default IP address has been changed, you can view the new IP address on the NetEco.



Step 3 Set the PC IP address in the same network segment as the SMU IP address, enter https://local IP address of the SMU (for example, https://192.168.0.10) in the address box of Internet Explorer, and press Enter. The login page is displayed. Figure 5-15 Login page



Step 4 On the login page, enter the preset user name admin and preset password Changeme, set the language, and click Log In. Step 5 Choose Monitoring > DC Power > Lithium Battery Group > Running Parameter > Charge Parameters to modify the charge current limit coefficient. The value range is 0.05C10–1.0C10.



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Figure 5-16 Setting the charge current limit coefficient



Step 6 Choose Monitoring > DC Power > Lithium Battery Group > Running Information to view the ESM running status information. Figure 5-17 Viewing the ESM status



Step 7 After the commissioning is complete, reconnect the cable removed in Step 1. ----End



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5.8.2 Connecting the ESM Supply and Setting Parameters (Third-Party Power System) Connecting the Lithium Battery Supply Step 1 Switch on the ESM circuit breakers. Step 2 Check whether the ESMs are activated. If the RUN indicator on an ESM is on, the ESM is activated. If it is off, the ESM is not activated. In this case, check that the cables are properly connected. Step 3 Observe the ESMs for 15 minutes. The ESMs are running properly if the alarm indicators are off. ----End



Setting Parameters NOTICE



The default charge current limit of the ESM is 0.15C.



Table 5-7 Setting parameters No.



Parameter



Standard Value



Value for Enabling the Intelligent Displacement Lock Antitheft Function



1



Capacity



N (ESM quantity) x 100 Ah



N (ESM quantity) x 97 Ah



2



Charge current limiting coefficient



0.15C10



0.15C10



3



Equalized charge voltage



56.4V



56.4V



4



Float charge voltage



54.5V



54.5V



5



LLVD disconnect voltage



47 V



47.6 V



6



BLVD disconnect voltage



40.5V



46 V



5.9 Acceptance Criteria Install and verify ESMs to ensure that they work properly. Issue 06 (2022-08-04)



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No.



Item



Acceptance Criteria



1



Indicator status



The indicator status is normal (the RUN indicator is steady on and no indicator is red).



2



Working status



You are advised to simulate a mains outage and recovery. The working status of the ESM is normal in the simulated condition.



3



Current



The ESM current is normal. According to system settings, the current deviation is within ±2 A.



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6 ESM Antitheft Function



6



ESM Antitheft Function



6.1 Activating the ESM Electronic Lock NetEco WebUI NOTE ● The ESM electronic lock is applicable when a Huawei power system is used and the required NMS license is purchased. ● This document uses iMaster NetEco V600R021C10 as an example.



Step 1 Log in to the NetEco. Figure 6-1 NetEco WebUI



Step 2 On the NetEco WebUI, choose Topic > Battery Management.



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Figure 6-2 NetEco WebUI



Step 3 On the NetEco WebUI, choose iLock > Site Name > Set iLock Parameters. Figure 6-3 NetEco WebUI



Step 4 On the NetEco WebUI, set iLock Enable to Enable. Figure 6-4 NetEco WebUI



----End



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SMU WebUI Step 1 Log in to Huawei SMU WebUI. Figure 6-5 WebUI



Step 2 Choose Monitoring > Lithium Battery Group > Running Parameter > iLock Enabled > Enabled, and click Submit. Figure 6-6 WebUI



----End



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LCD Table 6-1 Enabling electronic lock (LCD) First-Level Menu



Second-Level Menu



Third-Level Menu



Fourth-Level Menu



Default Value



Value Range



Parameters Settings



Li Battery #



Basic Parameters



iLock Enable



Lock Disable



Lock Enable, Lock Disable



NOTE ● This parameter is available when the battery model is ESM-A, ESU-A, or ESMBX. ● The default battery parameters vary depending on the battery model or battery capacity.



NOTE This parameter is available only when the battery antitheft function is supported.



6.2 Deactivating the ESM Electronic Lock NOTICE



● The ESM electronic lock applies only to Huawei power systems. ● Before NetEco replacement or SMU software R-version upgrade, deactivate the electronic lock of the ESM. ● You need to deactivate the electronic lock if an ESM with the license activated will be connected to another site.



NetEco WebUI Step 1 Log in to the NetEco WebUI and choose System > License Management.



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Figure 6-7 NetEco WebUI



Step 2 Select the ESM and click Manual Allocate. Figure 6-8 NetEco WebUI



Step 3 Select the ESM and click Deactivate. NOTE After deactivation, the ESM status is displayed as Inactive.



Figure 6-9 NetEco WebUI



----End



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6.3 Intelligent Displacement Lock and IoT Module Carrier Users For details about how to maintain the intelligent displacement lock and IoT module, visit https://support.huawei.com and see Intelligent Displacement Lock and IoT Module V300R008C10 Installation Guide.



Enterprise Users For details about how to maintain the intelligent displacement lock and IoT module, visit https://support.huawei.com/enterprise and see Intelligent Displacement Lock and IoT Module V300R008C10 Installation Guide.



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7 Maintenance Guide



7



Maintenance Guide



DANGER



● Do not smoke or use an open flame around batteries. ● Do not use wet cloth to clean exposed copper bars or other conductive parts. ● Do not use any organic solvent to clean batteries.



WARNING



Do not maintain batteries with power on. To power off batteries before performing operations such as checking and tightening screws and measuring the impedance of battery modules, inform the customer of the risks and take preventive measures or evaluate the risks.



CAUTION



● When moving batteries, handle batteries gently, and pay attention to personal safety. ● Use insulated tools during installation and maintenance. ● Keep the battery switch off when installing or maintaining the batteries. ● Before installing and maintaining the battery modules, remove the BCU, and reinstall the BCU after the installation or maintenance is complete. ● After batteries are discharged, charge the batteries in time to avoid affecting their service life.



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NOTICE



● Before performing operations, read through the user manual and pay attention to safety precautions. Only qualified personnel are allowed to perform maintenance operations. ● The ESM software can be upgraded only when the AC input power is normal.



7.1 Routine Maintenance To ensure the optimal operating status of ESMs, check and maintain ESMs regularly. When maintaining ESMs, record related information for checking ESM management parameters in the future. Table 7-1 ESM maintenance No.



Item



Acceptance Criteria



Check Method and Troubleshooting



Recommended Check Interval



1



Installation position



There is no air exhaust vent or refrigerant copper pipe of the air conditioner placed above the ESM, and no other water leakage risks exist.



● Check method: visual inspection



Quarterly



● Batteries are free from stains.



● Check method: visual inspection



● Battery wiring terminals are intact.



● Troubleshooting:



2



Battery appearance



● Batteries are intact and free of damage, deformation, bulges, and cracks. ● Batteries have no electrolyte leakage. (If electrolyte leakage occurs, there will be a pungent smell.) 3



Indicator status of the ESM



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● Troubleshooting: Rectify the fault based on the acceptance criteria. Quarterly



– Use a soft cotton cloth to clean the battery surface to keep it clean and free of stains. – Contact technical support engineers.



● Check method: visual inspection



Quarterly



● Troubleshooting: If a fault alarm is generated, see 7.3 Troubleshooting.



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No.



Item



Acceptance Criteria



Check Method and Troubleshooting



Recommended Check Interval



4



Ground cables



The ground cables of the ESMs are secured to the ground bar, and the screws are tightened.



● Check method: visual inspection



Quarterly



Screws are tightened. The insulation layers of cables are intact and terminals are free from black marks and noticeable sparks.



● Check method: visual inspection



● Measure and record the busbar voltage and the positive and negative voltages of ESMs when charging is about to complete. Ensure that the voltages are the same. If the voltages are different, check for cable faults and rectify them.



● Check method: (1) Measure using a multimeter. (2) When a network management system is configured, obtain the data remotely.



5



6



Power cables and terminals



Voltage



● Troubleshooting: Tighten the screws. Quarterly



● Troubleshooting: Replace the cables and tighten the loose screws. Semi-annually



● Troubleshooting: Replace the cables and tighten the loose screws.



● In the first year, collect real-time data when discharging is about to complete at least once every six months. ● From the second year, check the capacity quarterly.



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No.



Item



Acceptance Criteria



Check Method and Troubleshooting



Recommended Check Interval



7



Battery connection (recommended)



● Disconnect power supply to batteries and then check the battery power terminal connection.



● Inspection method: (1) Visual inspection. (2) Verify. Disconnect power supply to the corresponding battery route, ensure that batteries enter the maintenance state, and use an insulated torque wrench to check the screw torque.



Annually



● Use a torque wrench to check whether the tightening torque of each battery screw meets the requirements. After checking that the screw torque meets the requirements, mark the screw for subsequent check.



● Troubleshooting: Rectify the fault based on the acceptance criteria.



7.2 Replacing an ESM Prerequisites ●



The protective gloves, Phillips screwdriver, and socket wrench are available.



●



You have confirmed the model of the ESM to be replaced and a new ESM is available.



●



You are authorized to enter the site with the key.



●



(Optional) The intelligent displacement lock function has been disabled. For details, visit https://support.huawei.com and see Intelligent Displacement Lock and IoT Module V300R008C10 Installation Guide.



Replacement Requirements NOTICE



To keep power continuity during ESM replacement, ensure that other power sources, such as the mains, diesel generator, or a third-party DC power source, provide continuous power supply. Conditions for the ESM to enter and exit the maintenance mode: 1.



If the intelligent displacement lock antitheft function is disabled, hold down the MANUAL ON/OFF button for at least 15s to enter the maintenance mode.



2.



Hold down the MANUAL ON/OFF button for at least 15s to exit the maintenance mode.



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Before replacing an ESM in an actual maintenance scenario, hold down the MANUAL ON/OFF button for the ESM to power off. After the ESM is replaced, hold down the MANUAL ON/OFF button on the new ESM to exit the maintenance mode.



Removing an Old ESM Step 1 Wear protective gloves. Step 2 Switch the BAT– battery circuit breaker in the power system to OFF or remove the battery fuse. Step 3 Hold down the MANUAL ON/OFF button for 15s to enter the maintenance mode (In maintenance mode, all indicators blink fast, the ESM is activated, but it will not be charged or discharged). Step 4 Disconnect the cables from the old ESM. Insulate each cable and label them immediately. Step 5 Loosen the screws on the panel and remove the ESM. ----End



Installing an New ESM Step 1 Install the new ESM and tighten the screws. Step 2 Hold down the MANUAL ON/OFF button for 15s for the battery to enter the maintenance mode. In this mode, all indicators blink, the battery board is activated, but the battery is not charged or discharged. Step 3 Connect the cables to the new ESM based on the cable labels. Step 4 Switch the BAT– battery circuit breaker in the power system to ON or reinstall the battery fuse using a fuse extracting unit. Step 5 Hold down the MANUAL ON/OFF button for 15s for the battery to exit the maintenance mode. The battery is automatically activated and connects to the power system. Step 6 Remove the protective gloves and pack up all tools. ----End



Follow-up Procedure ●



Put the removed component into the ESD box or bag and then place the ESD box or bag into the carton box with foams or the packing case of the new component.



●



Fill in the fault card with the information about the removed component.



●



Contact your local office to handle the faulty component.



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7 Maintenance Guide



7.3 Troubleshooting Troubleshooting Fault Type



Fault Generation Condition



Possible Causes



Troubleshooting



BMS fault



1. The electrochemical cell voltage sampling circuit is faulty.



1. The welding point for electrochemical cell voltage sampling is loose or disconnected.



Replace the ESM.



2. The electrochemical cell temperature sampling circuit is faulty.



2. The voltage sampling terminal is disconnected. 3. The fuse in the voltage sampling circuit is blown. 4. The electrochemical cell temperature sensor has failed



Cell fault



The voltage of the electrochemical cell is low or unbalanced.



1. Due to large self-discharge, the electrochemical cell overdischarges to below 2.0 V after long-term storage.



Replace the ESM.



2. The electrochemical cell is damaged by external factors, and short circuits, pinpricks, or crushing occurs. Overvoltage protection



1. The busbar voltage is greater than 59.4 V in charging state.



3. The ESM voltage is greater than 55 V.



2. Cells are not consistent. The capacity of some electrochemical cells deteriorates too fast or the internal resistance of some electrochemical cells is too high.



1. The ESM voltage is less than 40.5 V.



1. The mains power failure has lasted for a long time.



2. The minimum electrochemical cell voltage is less than 2.5 V.



2. Cells are not consistent. The capacity of some electrochemical cells deteriorates too fast or the internal resistance of some electrochemical cells is too high.



2. The maximum electrochemical cell voltage is greater than 3.9 V.



Undervoltage protection



1. The busbar input voltage exceeds the normal value.



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Fault Type



Fault Generation Condition



Possible Causes



Charge high temperature protection



The maximum electrochemical cell temperature is greater than 60°C.



1. The ESM ambient temperature is too high.



Discharge high temperature protection



The maximum electrochemical cell temperature is greater than 65°C.



Charge low temperature protection



The minimum electrochemical cell temperature is less than 0°C.



Discharge low temperature protection



The minimum electrochemical cell temperature is less than –20°C.



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Troubleshooting



2. There are abnormal heat sources around the ESM.



1. The ESM ambient temperature is too low. 2. The heater fails to work.



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A Warranty Rules



A



Warranty Rules



●



The Company shall not be liable for any damage to ESMs due to force majeure (such as earthquakes, volcanic eruptions, mudslides, lightning strikes, fires, and wars).



●



The Company shall not be liable for any damage to ESMs caused by the following reasons:



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–



The operating temperature requirements are not met, the power grid condition is poor, power outages frequently occur, the site capacity is expanded, or lithium batteries cannot be fully charged for a long time.



–



The lithium battery is damaged, broken, or leaks due to improper operations or incorrect connection.



–



The customer does not recharge the batteries in time and the batteries are stored longer than the storage term, which causes capacity loss or irreversible damage to the batteries.



–



After the batteries are installed and connected to the system, the customer does not power on the batteries in time, which causes the batteries to be overdischarged and thus causes damage to the batteries.



–



Damage is caused to batteries because they are not accepted in time due to customer reasons.



–



Damage is caused to batteries because the battery operating environment or external power parameters do not meet environment requirements. Examples include operating temperature beyond the specified range, frequent power grid failures, frequent overdischarge due to improper maintenance, and long-time low battery capacity due to capacity expansion.



–



The customer changes the ESM use scenarios without notifying the Company.



–



Damage is caused by customers or third parties to batteries, for example, customers replace or reinstall the ESMs without notifying the Company.



–



The customer does not correctly set ESM operating parameters including but not limited to ESM capacity, number of ESMs, equalized charge voltage, float charge voltage, charge current limit, and disconnection voltage.



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A Warranty Rules



–



The customer does not maintain ESMs based on the operation guide for the required devices onsite. For example, the customer does not periodically check whether battery terminal screws are tightened.



–



The customer connects extra loads to ESMs.



–



The customer uses ESMs with other lithium batteries, causing acceleration of capacity decrease. For example, the customer uses ESMs together with lithium batteries of other vendors, with lithium batteries of different rated capacity, or old and new batteries are mixed.



–



ESMs are stolen.



–



ESMs whose warranty period expires.



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B FAQs



B



FAQs



ESM Charging Failed ●



●



Possible causes: –



Low battery temperature: The ESM cannot be charged at low temperature because low temperature protection is triggered.



–



Weak AC power supply: The AC power supply is insufficient and the busbar voltage is low, so the battery cannot be charged.



–



Incorrect charging voltage parameter settings: The battery charging voltage parameters are incorrectly set and the busbar voltage is low, so the battery cannot be charged.



–



Battery contactor or fuse fault: The charge loop of the ESM is faulty so the battery cannot be charged.



–



ESM activation cable not installed: If the ESM is used with an anti-reverse subrack, the ESM cannot be activated upon mains power recovery after deep discharge protection is triggered.



Solutions: –



Low battery temperature: If the ESM is used in a low-temperature environment, a heater needs to be installed in the cabinet. The ESM can be charged after low-temperature protection stops.



–



Weak AC power supply: Reconstruct the AC power supply onsite to meet power requirements of the site.



–



Incorrect charge voltage parameter settings: Check the charge voltage parameter settings and set the charge voltage of the ESM according to the user manual.



–



Battery contactor or fuse fault: Apply for a spare part and replace the faulty part.



–



ESM activation cable not installed: Connect an ESM activation cable if the ESM is used with an anti-reverse subrack.



ESM Backup Time Abnormal ●



Possible causes: –



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B FAQs



●



–



The LLVD and BLVD voltages of the ESM are set too high.



–



The discharge temperature of the ESM is too low.



–



The discharge rate of the ESM is too high.



Solutions: –



Insufficient charge due to incorrect equalized and float charging voltage settings: Check the charging voltage parameter settings and set the ESM charging voltage according to the user manual.



–



High LLVD and BLVD voltage settings: Check the LLVD and BLVD voltage parameter settings and set them to the recommended values in the user manual.



–



Low discharge temperature: If the ESM is used in a low-temperature environment, a heater needs to be installed in the cabinet. The ESM can be charged after low-temperature protection stops.



–



High discharge rate: Expand the capacity of ESMs of the same type at the site to reduce the ESM discharge rate.



ESM Restart Step 1 Switch off the ESM circuit breaker. Step 2 Hold down the MANUAL ON/OFF button on the ESM panel for at least 5s and less than 15s to power off the ESM. Step 3 Switch on the ESM circuit breaker. ----End



ESM Activation Button Failed ●



Possible causes: –



The ESM antitheft locks (displacement lock) are activated.



–



After the GPS module is installed, the ESM activation button is shielded by default.



ESM Communication or Identification Failed ●



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Possible causes: –



The ESM communications cable is incorrectly connected.



–



The build-out resistor is not installed or incorrectly installed.



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C Acronyms and Abbreviations



C



Acronyms and Abbreviations



B BMS



battery management system



E ESM



energy storage module



L LUI



LCD user interface



S SOC



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state of charge



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