Electrical · E-KFYZR

Electrical Distribution One-Line Diagram

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An electrical distribution single-line diagram details a 600-ampere, 480-volt, 3-phase, 3-wire, 60-hertz system with a 65 kiloampere interrupting capacity bus. The system includes a 300-ampere trip / 600-ampere frame circuit breaker with solid-state trip unit providing long-time, short-time, instantaneous, and ground-fault protection. A metering package is connected via three current transformers and potentials supplied by a control power transformer stepping down from 480 to 120 volts. A #4/0 bare copper grounding conductor ties the system to earth ground.

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