Small networkable collection circuit breaker

Abstract

The invention discloses a miniature networked acquisition circuit breaker which comprises a main control circuit, a linkage switch-off mechanism and a plurality of power supply branches, wherein a shunt type current detection mutual inductor is arranged on each power supply branch; each shunt type current detection mutual inductor comprises a magnetic core, an output wiring terminal, an input wiring terminal, a first branch of a primary circuit connected between the input wiring terminals in series, a second branch winding of the primary circuit wound on one side of the magnetic core, and a secondary winding wound on the other side of the magnetic core; output current of a power supply circuit of a power distribution system respectively flows according to impedance ratios of the first branch of the primary circuit and the second branch winding of the primary circuit, so as to reduce the current of the second branch winding of the primary circuit; when the same output current is detected, a smaller magnetic core and fewer coil turns of the secondary winding can be selected, so as to reduce the size of the current detection mutual inductor, and further reduce the size of the circuit breaker, facilitate installation and use, and be more suitable for an intelligent power distribution system.

Description

technical field [0001] The invention relates to the field of electrical technology, in particular to a small network-capable collection circuit breaker. Background technique [0002] With the increase in the types of electrical equipment and the increase in the scale of power consumption, in order to prevent safety accidents caused by short-circuit or overload in the power distribution system, a small circuit breaker that can be connected to the network must be installed in the power distribution system. The function of the small networkable collection circuit breaker is to connect, break and carry the rated operating current; and to close, carry and break the current under abnormal circuit conditions (such as short circuit, overload, leakage, etc.) within the specified time. In addition to the above basic functions, the small networkable collection circuit breaker also has the functions of remote reading and status monitoring of voltage, current, leakage current, temperatur...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a small networkable collection circuit breaker to solve the problem that all the current of the power circuit passes through the current transformer of the small networkable collection circuit breaker, so that the volume of the small networkable collection circuit breaker increases, which is not conducive to Realization and installation and use of small network-capable circuit breakers for network collection

Images