Varieties of circuit breaker accessories
It is divided into two categories: in-flight accessories and out-of-flight accessories.
The accessories in the machine are the subordinate equipment of the equipment inside the circuit breaker, including four types: shunt tripper, undervoltage tripper, auxiliary switch and alarm switch. Usually the accessories in the machine must open the cover of the equipment, but now there is a new type of circuit breaker and its accessories adopt a modular structure, and its equipment and replacement do not need to open the cover, and then ensure the reliability of the circuit breaker, but also bring convenience to the user; The external accessories are the subordinate equipment of the equipment outside the circuit breaker, including auxiliary handles, external operating handles, electrical operating mechanisms, handle locking equipment, mechanical interlocking equipment, electrical interlocking equipment, back-board wiring equipment, plug-in equipment stations and auxiliary contact equipment.
An accessory that indicates the condition of the circuit breaker
Auxiliary switches and alarm switches are both in-machine accessories that are used to show the current condition of the circuit breaker. The difference between an auxiliary switch and an alarm switch is:
The auxiliary switch is to change the condition when the circuit breaker is divided and closed, which can show the connection and disconnection status of the circuit breaker, but can not distinguish whether the circuit breaker is faulty tripping, so the auxiliary switch is mainly used for the display of the circuit breaker's opening and closing status, and through the opening and closing of the circuit breaker, it can control or interlock other related electrical appliances, such as outputting signals to signal lights, relays and logic circuits. The alarm switch is to change the condition when the circuit breaker is disconnected due to a fault, which can show the fault tripping condition of the circuit breaker, and the alarm switch is mainly used to show the situation when the circuit breaker is disconnected due to a fault, and when the circuit breaker load is faulty, it is timely to control or interlock other related electrical appliances, such as the output signal to the alarm equipment, signal lights, relays and logic circuits outside the circuit breaker. In general, whether it is an auxiliary switch or an alarm switch, it can only detect the condition of the main contact of the circuit breaker, but cannot change its condition.
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Check whether the output circuit of the inverter is short-circuited.
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