Client : China Geo Engineering Corporation

Assignment : MV Protection Coordination Study, Testing & Commissioning of Storm Water Pumping Station : St. Sebastian North Lock Gates and Pumping Station (NLGPS), Wellampitiya, Sri Lanka 


Upon invitation of project contractor (China Geo-Engineering Corporation Sri Lanka), APCL involved in conducting Testing & Commissioning of 11 kV & 3.3 kV Medium Voltage Installation including a Protection Coordination Study. 

Without limiting to general T&C scope, APCL consultant Eng. Kaushalya Alpitiarachchi together with Eng. Laksith Sirisena conducted an in-depth Visual Inspection on MV system to identify the areas requiring improvements prior to commercial operation. 

Tests conducted:

  • Dielectric Withstand Voltage (HiPot)
  • Interlock scheme validation
  • HV insulation resistance
  • Contact resistance of VCB & busbars 
  • Performance of Protection Relays

The comprehensive Protection Coordination study was conducted with licensed ETAP software & with beyond-simulation review by APCL’s consultants.

Project Period : 2021 February/March

Medium Voltage Commissioning of Storm Water Pumping Station
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