CN105071343A - Execution circuit of self-recovery leakage protector - Google Patents

Abstract

The invention relates to an execution circuit of a self-recovery leakage protector. The execution circuit comprises a power supply circuit and an execution control circuit connected to the power supply circuit. The execution control circuit further comprises a drive circuit, an execution component magnetic latching relay and a leakage determination circuit. The power supply circuit further comprises rectifier diodes D1, D2, D3 and D4, filtering capacitors C1 and C2, dropping resistors R1 and R2 and Zener diodes D5 and D6; and generates power voltages VCC, VEE and VDD. The drive circuit comprises a transistor Q1, diodes D8 and D9, resistors R3, R4 and R7, capacitors C3 and C4 and a relay K1. The execution component magnetic latching relay comprises a magnetic latching relay K2. The leakage determination circuit comprises a transistor Q2, resistors R5 and R6 and a diode D7. The self-recovery delay time is accurate, actuation and release of the magnetic latching relay are effectively and accurately controlled, and the whole circuit is simple in design, high in the electromagnetic compatibility resistance, low in cost and suitable for batch production.

Description

Self-healing earth leakage protector executive circuit

Technical field

The present invention relates to a kind of protector executive circuit, more particularly, relate to a kind of self-healing earth leakage protector executive circuit.

Background technology

Relay removes as a kind of small area analysis the conversion equipment controlling big current running, and improving its reliably working performing control circuit is the critical path realizing self-healing earth leakage protector high reliability.In existing self-healing earth leakage protector executive circuit technology; relay for cutting off and connect alternating current generally adopts conventional electromagnetic relay, and its shortcoming is because the electromagnetic relay of the restriction routine of volume cannot meet the design requirement of self-healing earth leakage protector more than 40 amperes cage.

Therefore, prior art urgently has greatly improved.

Summary of the invention

The technical problem to be solved in the present invention is, for the above-mentioned defect of prior art, provides a kind of self-healing earth leakage protector executive circuit, comprising: interconnective power circuit and execution control circuit; Wherein perform control circuit and comprise drive circuit, executive component magnetic latching relay and electric leakage decision circuitry;

Described power circuit comprises rectifier diode D1, rectifier diode D2, rectifier diode D3, rectifier diode D4, filter capacitor C1, filter capacitor C2, dropping resistor R1, dropping resistor R2 and voltage stabilizing didoe D5, voltage stabilizing didoe D6, produce supply voltage VCC, VEE and VDD;

Described drive circuit comprises transistor Q1, diode D8, diode D9, resistance R3, resistance R4, resistance R7, electric capacity C3, electric capacity C4, relay K 1;

Described executive component magnetic latching relay comprises K2 magnetic latching relay.

Implement self-healing earth leakage protector executive circuit of the present invention, there is following beneficial effect: the executive component performing control circuit adopts magnetic latching relay, effectively solve and adopt conventional electromagnetic relay cannot meet the design requirement of self-healing earth leakage protector more than 40 amperes cage at existing self-resetting type residual current operated protective device executive circuit; Not only runback delay time is accurate for the drive circuit of execution control circuit, and effectively solves the accurate control of magnetic latching relay adhesive and release; Simple, the anti-electromagnetic compatibility characteristic of whole circuit design is high, is very applicable to batch production at the bottom of cost simultaneously.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:

Fig. 1 is the module diagram of the first embodiment of self-healing earth leakage protector executive circuit of the present invention;

Fig. 2 is the concrete module power supply circuit schematic diagram of control module in Fig. 1.

Fig. 3 is that the concrete module of control module in Fig. 1 performs control circuit schematic diagram.

Embodiment

Referring to Fig. 1, is the module diagram of the first embodiment of self-healing earth leakage protector executive circuit of the present invention.As shown in Figure 1, in the self-healing earth leakage protector executive circuit that first embodiment of the invention provides, at least comprise, interconnective power circuit and execution control circuit; Wherein perform control circuit and comprise drive circuit, executive component magnetic latching relay and electric leakage decision circuitry.

Incorporated by reference to consulting Fig. 2, it is the concrete module power supply circuit schematic diagram of control module in Fig. 1.。As shown in Figure 2, in the first embodiment provided by the invention, described power circuit comprises rectifier diode D1, rectifier diode D2, rectifier diode D3, rectifier diode D4, filter capacitor C1, filter capacitor C2, dropping resistor R1, dropping resistor R2 and voltage stabilizing didoe D5, voltage stabilizing didoe D6, produce supply voltage VCC, VEE and VDD.

Incorporated by reference to consulting Fig. 3, for the concrete module of control module in Fig. 1 performs control circuit schematic diagram.As shown in Figure 3, in the first embodiment provided by the invention, described drive circuit comprises transistor Q1, diode D8, diode D9, resistance R3, resistance R4, resistance R7, electric capacity C3, electric capacity C4, relay K 1; Described executive component magnetic latching relay comprises K2 magnetic latching relay; Described electric leakage decision circuitry comprises transistor Q2, resistance R5, resistance R6 and diode D7.

The present invention is by the design of above first embodiment, can accomplish that the executive component performing control circuit adopts magnetic latching relay, effectively solve and adopt conventional electromagnetic relay cannot meet the design requirement of self-healing earth leakage protector more than 40 amperes cage at existing self-resetting type residual current operated protective device executive circuit; Not only runback delay time is accurate for the drive circuit of execution control circuit, and effectively solves effective control of magnetic latching relay adhesive and release; Simple, the anti-electromagnetic compatibility characteristic of whole circuit design is high, is very applicable to batch production at the bottom of cost simultaneously.

The present invention is described according to specific embodiment, but it will be understood by those skilled in the art that when not departing from the scope of the invention, can carry out various change and equivalent replacement.In addition, for adapting to the specific occasion of the technology of the present invention, can many amendments be carried out to the present invention and not depart from its protection range.Therefore, the present invention is not limited to specific embodiment disclosed herein, and comprises all embodiments dropping into claims.

Claims (1)

1. a self-healing earth leakage protector executive circuit, is characterized in that, comprising: interconnective power circuit and execution control circuit; Wherein perform control circuit and comprise drive circuit, executive component magnetic latching relay and electric leakage decision circuitry;

Described power circuit comprises rectifier diode D1, rectifier diode D2, rectifier diode D3, rectifier diode D4, filter capacitor C1, filter capacitor C2, dropping resistor R1, dropping resistor R2 and voltage stabilizing didoe D5, voltage stabilizing didoe D6, produce supply voltage VCC, VEE and VDD;

Described drive circuit comprises transistor Q1, diode D8, diode D9, resistance R3, resistance R4, resistance R7, electric capacity C3, electric capacity C4, relay K 1;

Described executive component magnetic latching relay comprises K2 magnetic latching relay;

Described electric leakage decision circuitry comprises transistor Q2, resistance R5, resistance R6 and diode D7.