How to adjust variable-frequency or soft-start upper-mounted molded case circuit breakers
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Dear fellow enthusiasts, I have pumps equipped with frequency converters and soft starters. I would appreciate your guidance on how to adjust parameters such as Im, time setting, and In=Ir for the plastic-molded circuit breakers on these devices. I have a background in instrumentation but no knowledge of electrical systems; please offer me some advice. Thank you! Additionally: The fan is a large-shaft wheel fan ； The water pump is a multi-stage pump, and the medium is clean water.
Search on Baidu for the instruction manual of this model of molded case circuit breaker
Inverters usually come with recommended circuit breakers; one simply needs to set these parameters according to the tripping curve of the recommended circuit breaker.
Check whether the frequency converter or soft starter has any requirements for these parameters.