OCB Image Binder.pdf

This document consists of photographic images of electrical substation equipment, specifically high-voltage power distribution apparatus manufactured by McGraw-Edison Company, Power Systems Division, located in Canonsburg, Pennsylvania.

The images document various components of what appears to be a 138 kV or higher voltage outdoor substation facility, including multiple porcelain and ceramic insulators, voltage transformers, circuit breakers, hydraulic accumulators, operating mechanisms, and control cabinets. Notable equipment visible includes: McGraw-Edison circuit breaker Type AHF54 (Model IBMS1-SS, rated 145 kV, 1200 amps continuous, 20 kA interrupting current, with 790 gallons of oil per tank and total weight of 35,300 lbs); McGraw-Edison current transformer Type OE-12 (60-cycle, subtractive polarity); McGraw-Edison operating mechanism Type OA-3 (Serial 5150, with 125 DC trip volts and 240 AC motor volts); and a Parker Hydraulic Accumulator (Model AAR0347B21K, 347 cubic inch capacity, 5000 PSI maximum operating pressure, precharged to 1625 PSI). Additional visible components include control systems, heater units rated at 240 AC volts and 250 watts, and standard substation interconnecting equipment. The photographs are dated May 27, 2026, and appear to be technical documentation of installed utility infrastructure.