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What are the factors which are involved in circuit breaker rating?

What are the factors which are involved in circuit breaker rating?

Answers

gregory
Factors involved in circuit breaker rating
The following rated quantities for HV ac circuit breeders

Opening time: interval of time between energizing the shunt trip coil and instant of
separation of arcing contact in all poles
Breaking time: it is time between energizing of opening release and the instant of
final arc extinction
Closing time: The time interval between energizing of closing circuit and contact
touch with all poles.
Open close time: it is time between separation of arcing contacts all the poles and
contact touch in first pole deriving open close operation.
Reclosing time: Time between energizing of shunt trip release and contact toad in all
poles.
Close-open time: Time between contact touch in first pole and separation of arcing
contact in all poles during close open operation.
The rated characteristics of circuit breaker include rated normal current, rated voltage,
rated insulation level, rated transient recovery voltage, rated short circuit breaking
current, rated short circuit making current, rated operation sequence etc
gregorymasila answered the question on February 22, 2018 at 16:18

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