EVALUASI PERFORMANSI TEGANGAN TEMBUS MINYAK RESIDU TRANSFORMATOR DAYA PADA G.I.S (Gas Insulated Switchgear) SIMPANG HARU, PADANG

Abstract

Isolation transformers in this kind is oil, which is a cooling system that uses oil as insulating medium inside the transformer can decrease the amount of water that contaminates the oil, the value of breakdown voltage insulation oil is very important in the operation of the transformer, to separate and maintain the temperature state of the inside the transformer. In line operation transformer on G.I.S (Gas Insulated Switchgear) Simpang haru, breakdown voltage test evaluations performed by each sample was different from the methods and standards for testing breakdown voltage obtained test resultssample 1 dielectric strength is32,01 kV, sampel 2 dielectric strength is30,54 kV,  sampel 3 dielectric strength is31,10 kV, For the dielectric losses
of transformer oil sample 1 isP
dielektrik
=  4,163 × 10
−9
Watt, sample2 transformer oil isP
dielektrik
=  3,972 × 10
−9
Watt, , sample3 transformer oil isP
Watt, And the viscosity values obtained in each sample9,526 × 10
−8
dielektrik
=  4,045 × 10
 cSt, 9,004 × 10
 cSt. Analysis of the performance evaluation of residual oil breakdown voltage transformer to determine the cause of the failure of this isolation, is necessary in order to do the process of quality improvement and replacement of the insulating oil. And is expected to reduce the damage caused by the failure of the isolation transformer.  Keywords:Transformer, oil insulation and breakdown voltage.  

−5

−9