What Is The Function Of A Low-voltage Circuit Breaker With Reclosing Function?

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  The so-called reclosing means that when the electrical circuit is faulty and tripped, the circuit breaker can be closed by itself to restore power supply. Here I want to emphasize that the recloser is only effective for transient faults, and if it is a permanent fault, the recloser is not in action and plays a role in protecting the line.

  What kind of function is the low-voltage circuit breaker with reclosing function.

 Which can be divided into according to the tripping method of the reclosing circuit breaker.

 (1) Three-phase recloser,

(2) Single-phase recloser, 

(3) Comprehensive recloser,

Classified according to the conditions of use.

(1) Single-side power supply recloser: three-phase one-time recloser: that is, no matter what type of fault occurs in the line, the relay protection device will disconnect the three-phase circuit breaker, and then the reclosing starts, and the three-phase circuit breaker will be closed after a scheduled time, if it is an instantaneous fault, the fault point disappears, and the line runs normally. If it is a permanent fault, the relay protection will act again, disconnect the three-phase circuit breaker, and no longer close.

(2) Double-sided power supply recloser: verification of non-voltage recloser, verification of simultaneous recloser, and non-simultaneous recloser.

(3) Comprehensive reclosing.

Reclosing circuit breakers can be divided into according to the composition of working elements.

(1) Electromagnetic relay combined

(2) transistor

(3) integrated circuit

(4) programmable logic control

(5) digital low-voltage circuit breaker with reclosing function for integrated protection, which can save manpower and material resources and make the power supply quality better.

    The residual current action circuit breaker with automatic reclosing function has the same protection function as the ordinary electronic residual current action circuit breaker, and has the function of leakage protection, overload protection and short circuit protection. The only difference is the automatic reclosing function. The automatic reclosing function of this switch is that when the circuit breaker fails to trip, the motor of the circuit breaker will drive the handle to reclose. There is also the use of relays for automatic reclosing. The principle is the same. But automatic reclosing is not tripping and then closing all the time. However, if the circuit breaker trips again due to fault after the first automatic recloser, the automatic reclosing function of the circuit breaker will lock itself. Ensure that the circuit breaker is no longer closed. What is the function of low-voltage circuit breaker with reclosing function, and most of the automatic reclosing time can be adjusted to meet the requirements of different occasions. The reason why this circuit breaker is used in the distribution network is that some faults in the power grid are temporary and will be restored soon, such as leakage caused by wind, small animals, etc. If a normal circuit breaker is used, it will need to be closed manually after tripping. This is a great waste of manpower and material resources, and it also affects the quality of power supply. Circuit breakers that use an automatic recloser function can save a lot of resources.