A residual operating current circuit breaker for energy saving and consumption reduction

Abstract

The invention relates to an energy-saving and consumption-reducing residual action current circuit breaker, which comprises an input end and a tripping power circuit connected with the input end, wherein a positive output end of the tripping power circuit is sequentially connected with an energy-saving and consumption-reducing active selection circuit, a residual current action control circuit and a residual current detection circuit; the energy-saving and consumption-reducing active selection circuit comprises a triode Q2; an emitter and a collector of the triode Q2 are connected with the positive output end of the tripping power circuit through a resistor R2 and a resistor R3 separately; a resistor R4 is connected between a base and the collector of the triode Q2 in parallel; the base of the triode Q2 is grounded through a voltage-regulator tube D5; the emitter of the triode Q2 is connected with the residual current action control circuit; the ratio of the resistor R2 / the resistor R3 is 5-6 times; voltage output by the tripping power circuit is automatically judged; power supply is carried out by using the resistor R2 or the resistor R3 according to voltage fluctuation; and furthermore, overvoltage or undervoltage work can be avoided and a temperature rise is reduced, so that the effects of saving energy and reducing consumption are achieved.

Description

technical field [0001] The invention relates to the field of residual current operating circuit breakers, in particular to a residual operating current circuit breaker for energy saving and consumption reduction. Background technique [0002] At present, the country is mainly promoting energy saving and consumption reduction, and the residual operating current circuit breaker is an important part of the power grid, and the power it occupies is also a large loss. However, the existing residual operating current circuit breaker mainly promotes energy saving and consumption reduction. Energy saving and consumption reduction are mostly achieved by selecting components with lower energy consumption, but the voltage of the power grid will always fluctuate, and the residual current operated circuit breaker is always on the passive side, so it may cause temperature rise due to voltage fluctuations , resulting in energy loss. Contents of the invention [0003] The object of the pr...

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Problems solved by technology

[0002] At present, the country is mainly promoting energy saving and consumption reduction, and the residual operating current circuit breaker is an important part of the power grid, and the power it occupies is also a large loss. However, the existing residual operating current circuit breaker mainly promotes energy saving and reducing consumption. Energy saving and consumption reduction are mostly achieved by selecting components with low energy consumption, but the voltage of the power grid will always fluctuate, and the residual current operated circuit breaker is always on the passive side, so it may cause temperature rise due to voltage fluctuations , resulting in energy loss

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