over-current protection relay / three-phase / programmable
SEL-387

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over-current protection relay over-current protection relay - SEL-387
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Characteristics

  • Measured/monitored value:

    over-current

  • Network:

    three-phase

  • Other characteristics:

    programmable

Description

Current Differential and Overcurrent Relay
The SEL-387 Current Differential and Overcurrent Relay provides protection, control, and metering for transformers, buses, breakers, and feeders. Features include four three-phase current inputs with independent restrained and unrestrained differential protection, programmable single- or dual-slope differential characteristic, circuit breaker monitor, battery voltage monitor, and enhanced SELogic control equations.