11 Terms
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Circuit breakers
Industry: Electrical equipment
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Circuit breakers
local current meter
Electrical equipment; Circuit breakers
An ammeter installed as part of the trip unit.
long-time, instanteneous, ground-fault (LIG)
Electrical equipment; Circuit breakers
A combination of adjustable trip functions including long-time ampere rating, long-time delay, instantaneous pickup, ground-fault pickup and ground-fault delay.
lifting adapter
Electrical equipment; Circuit breakers
A device used with a crane, chain block or an optional lifting mechanism supplied with switchgear for removing and installing a drawout circuit breaker or fuse truck.
long-time and instantaneous (LI)
Electrical equipment; Circuit breakers
A combination of adjustable trip functions including long-time ampere rating, long-time delay, and instantaneous pickup.
let-through current
Electrical equipment; Circuit breakers
The peak current (measured in amperes) which passes through an overcurrent protective device during an interruption.
latch check switch
Electrical equipment; Circuit breakers
A mechanically-operated switch which senses if the trip latch is reset.
