Main Substation 138 kV Breaker and Protection Relay Upgrade

Power Precision provided engineering, installation and commissioning services for improvement of the 138 KV outdoor substation at the Trevali Caribou Mines including

  • replace OCB with 138 KV SF6 Breaker¬†
  • Install new microprocessor protection relays for new HV breaker 5 KV feeders
  • Install larger Neutral Ground Resistor
Hydro Plant Protection and Control Upgrade