Low-voltage complete switch equipment and control method thereof

Abstract

The invention discloses low-voltage complete switch equipment and a control method thereof. The low-voltage complete switch equipment comprises a transformer, a controller and a plurality of circuit breakers, wherein a measurement module of the controller is connected onto the output terminal of the transformer; the input terminal of the transformer is connected with a power supply bus; the output terminal of the transformer is connected with a plurality of outgoing wires with different important grades; one circuit breaker is connected to each outgoing wire in series; each circuit breaker further comprises a control terminal; and a driving unit of the controller is respectively connected with the control terminal of each circuit breaker. The controller is used for monitoring a current value in an output circuit of the transformer by the measurement module; when the current value is found to be greater than a setting value for a period of time, a control signal is transmitted to enable the circuit breaker of the outgoing wire of a minimum important grade in the outgoing wires which are not in open circuit in the current state to be broken off; and if the current value still exceeds the setting value, the circuit breaker with lower important grade is continuously broken off. Therefore, an important load is kept in a work state as much as possible. The low-voltage complete switch equipment and the control method thereof disclosed by the invention are suitable for all low-voltage circuits.

Description

technical field [0001] The invention relates to a circuit control device, in particular to a low-voltage complete switchgear and a control method thereof which can reduce the probability of power failure of important loads. Background technique [0002] The low-voltage complete switchgear is responsible for the control, protection, measurement, conversion and distribution of electric energy in the low-voltage (380V and below voltage level) power supply system. Since the low-voltage complete switchgear goes deep into production sites, public places, residential buildings and other places, it can be said that all places where electrical equipment is used must be equipped with this equipment. [0003] In the existing low-voltage complete switchgear, a main circuit breaker is arranged on the main line, so that when a large current occurs in the main circuit, the entire circuit will be cut off directly, and all electrical equipment will be cut off. That is, the failure of some e...

AI Technical Summary

Problems solved by technology

[0005] The present invention mainly solves the technical problems in the prior art that a circuit breaker is installed on the bus, and power failure will affect all electrical appliances. Low-voltage complete switchgear for electrical equipment work and its control method

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