This project is part of a long-term program to upgrade older oil circuit breakers (OCB) with new vacuum breakers. RLC Engineering performed the engineering services to support the replacement of thirty-eight (38) 23 kV breakers single tank OCBs with Siemens SDV7 non-arc resistant distribution vacuum circuit breakers three (3) – three tank OCBs with either Siemens Type transmission class breakers, seventy-six (76) manually operated switches, three (3) motor-operated disconnect switches, forty-five (45) reactors, and the removal of nineteen (19) group operated grounding switches.

SCOPE OF SERVICES

• Design of steel to support the new breakers on the existing foundations.
• Providing animal protection in accordance with client standards.
• Disconnect switches and lightning arrestors were designed to mount in the existing switch and arrester locations with minimum modifications to the structure.
• Existing breaker control cables were designed to terminate in a new junction box and from there, new cables will be installed into the breaker mechhousing.