LV MV Cubicle Maintenance

Pekerjaan Maintenance meliputi: Cek pembacaan protection relay dan Digital Power Metering, pengencangan kabel power & control, termasuk pengukuran kabel grounding, pengecekan kabel terminasi di sisi incoming & outgoing, Grounding Resistance Test, Tightening & re-marking Bolt & Nut (check Torque), Function Test, Simulasi pengetesan, dan Cleaning.


Relay Protection
Test

Pekerjaan meliputi: Inject Current Test, Setting Relay & Coordination OCR/GFR/EFR/sebagainya, Time Delay, Upgrading firmware, Check fault & communication dan Data log.



Purifikasi & Maintenance Trafo

Pekerjaan meliputi: Purifikasi Trafo, Test Break Down Voltage (BDV) std.IEC 156 before-after, Penambahan Oli Trafo, Cek packing seal trafo & bushing, Tightening & re-marking Bolt & Nut (Torque), Cek ISD, PIB 50 mm2 proteksi trafo, dan Cleaning.


Turn Test Ratio & Insulation Resistance Trafo

Pekerjaan meliputi: Pengukuran Tahanan Isolasi Trafo, pengukuran perbandingan tegangan dan belitan trafo (fasa/Antar fasa Trafo).


Oil Analyses & Dissolved Gas Analyses Trafo

Pekerjaan meliputi: Pengambilan sample Oil pada Trafo untuk dilakukan pengecekan lab.
A) Oil Analyses: Moisture or Water Content (IEC 60814) Neutralization / Total Acidity (IEC 6021 -2) Flash Point PMCC (ASTM D93) Interfacial Tension (ASTM D971) Colour & Visual Examination Sediment Content (AS 1883)
B) Dissolved Gas Analyses: Hydrogen (H2) Ethane (C2 H6) Ethylene (C2 H4) Carbon Dioxide (CO2) Methane (CH4) Carbon Monoxide (CO) Total Dissolved Combustible Gas (TDCG)


Instalasi
Air Circuit Breaker

Pekerjaan meliputi: Pengadaan dan pemasangan ACB Masterpact NW 800-3200A.