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PT.BAMBANG DJAJA Jl. RUNGKUT INDUSTRI III/56 SURABAYA, INDONESIA, Fax. No. : (031) 8438350 - Telex 33295 BD SB IA Phone : (031) 8438703 (Hunting), 8438470, 8439688, 8414058



TRANSFORMER



INSPECTION TEST PLAN



Prepared by:



PT Bambang Djaja



(Nur Aswan Darwis)



PT.BAMBANG DJAJA Jl. RUNGKUT INDUSTRI III/56 SURABAYA, INDONESIA, Fax. No. : (031) 8438350 - Telex 33295 BD SB IA Phone : (031) 8438703 (Hunting), 8438470, 8439688, 8414058



TRANSFORMER INSPECTION TEST PLAN Manufacturer : B & D No



Tests/Insp Item



Routine Test 1 Resistance measurement 2 Phase relation (vector group) test 3 Turn Ratio test



Standard/ Reference



IEC 60076



Activity/requirement



Performed on nominal tap



IEC 60076



IEC 60076



4



Insulation resistance



MFG STD



5



No load losses and excitation current ( magnetizing



IEC 60076



Performed on all position Performed between:  HV - LV  HV – G  LV – G  Performed on nominal tap position  Under guaranteed value at rated KVA



Acceptance



Inspection Scope



B&D



PT Wasa Mitra Engineering



PT Rekadaya Elektrika



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PT.BAMBANG DJAJA Jl. RUNGKUT INDUSTRI III/56 SURABAYA, INDONESIA, Fax. No. : (031) 8438350 - Telex 33295 BD SB IA Phone : (031) 8438703 (Hunting), 8438470, 8439688, 8414058



TRANSFORMER 6



7



8 9



10



current test) Impedance voltage and load losses ( Positive sequence impendance test) Applied voltage test



IEC 60076



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 Duration: 1 minutes  Primary (BIL - kV ) :  Secondary (BIL -) : Two time of rated Voltage 200 HZ, 30 seconds  Rate of rise voltage 500V/sec  Mushroom electrode  0,5 Bar positive pressure  24 hour



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



IEC 60076



Induce voltage test Dielectric test for Oil



IEC 60076



Leak test



MFG STD



Site Test 1 Cek urutan Phasa 2 Insulation resistance



On nominal position Full Load Loss under guaranteed value at rated kVA Calculation based on 75 deg C



 



IEC 60156



MFG STD



Performed between:  HV - LV  HV – G  LV – G



Type Test (between B&D and User) - >4000kVA Transformers Only



PT.BAMBANG DJAJA Jl. RUNGKUT INDUSTRI III/56 SURABAYA, INDONESIA, Fax. No. : (031) 8438350 - Telex 33295 BD SB IA Phone : (031) 8438703 (Hunting), 8438470, 8439688, 8414058



TRANSFORMER 1 2



3



Audible sound pressure level Temperature Test



IEC 60076



Peformed on Nominal Voltage



IEC 60076



Perform on Maximal Tap



Lightning Impulse Test



IEC 60076



Perform lightning impulse over voltage to each terminal base on it BIL



Legend: F = Inspect Within FAT SW = Spot Witness Inspection W = Witness inspection



P X S



Max 64 dB (0.3 m ONAN)



Oil Temperature Rise Winding Temperature Rise 20000V 125kV BIL 11000V 60kV BIL  



= Perform = not applicable = Submit



R = Review M = Monitoring



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