The difference between circuit breaker and disconnector - Delixi

The disconnector is a kind of switching equipment that is mainly used for "blocking the power supply, reversing the operation, and connecting and blocking the small current circuit", without arc extinguishing function. When the barrier switch is divided into directions, there is an insulation distance between the contacts that meets the specified requirements and a significant disconnection mark; A switchgear that can carry current under normal loop conditions and abnormal conditions (e.g., short circuit) within a specified period of time when in azimuth.

The difference between circuit breaker and disconnector - Delixi

The difference between circuit breaker and disconnector - Delixi

The four fundamental effects of the disconnector: the barrier switch and the circuit breaker are matched to carry out the reverse operation to change the operation method. When the equipment is overhauled, the barrier switch is used to block the electric and non-electric parts to form a significant disconnection point, and the equipment is blocked from the power system to ensure the safety of staff and equipment. Use the barrier switch to carry out the operation of 500KV small current circuit closing (ring) circuit current. However, it can only be carried out after accounting and meeting the technical conditions of the barrier switch and the relevant scheduling procedures. It is used to interrupt the small current circuit and the side (loop) current.

What is the difference between a disconnector and a circuit breaker: In general, the downstream flow of the barrier switch is the circuit breaker, and the effect of the two is different. Needless to say, the effect of the circuit breaker is to carry the breaking current, and the blocking switch is in the case of the circuit breaker, if it needs to be repaired, it will be disconnected to intercept the downflow circuit breaker and ensure the safety of people. Therefore, the barrier switch does not have the function of carrying the faulty current, and the safety depends on human perseverance to open or close. The barrier switch plays a significant disconnect point in the circuit to ensure the safety of personnel during repair, and generally can only block the no-load current of the line, and cannot block the load current and short-circuit current. The load switch also has a blocking effect, but can block the load current; The circuit breaker can intercept the load current and short-circuit (fault) current, and can actively trip when there is a fault; Some types of circuit breakers also have a blocking function and can be used as a blocking appliance.

There are four main differences between circuit breakers and disconnectors: circuit breakers are equipped with arc suppression equipment, so they can block load currents and fault currents; The barrier switch does not have arc suppression equipment, and it cannot be used to intercept or put in load current and fault current above a certain capacity; The circuit breaker is mostly operated by long-distance electric control; Barrier switches are mostly manually operated in situ.

The difference between circuit breaker and disconnector - Delixi

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