CN2775826Y

CN2775826Y - Phase lost overload leakage breaker

Info

Publication number: CN2775826Y
Application number: CN 200520005239
Authority: CN
Inventors: 单汝淦; 单晓慧
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-03-04
Filing date: 2005-03-04
Publication date: 2006-04-26
Anticipated expiration: 2015-03-04

Abstract

The utility model relates to a phase failure overload leakage breaker for automatic measurement, control and protection, which is arranged in an insulating casing and is characterized in that a breaker, a current release, a voltage release, a testing resistor, a testing button, a zero sequence current transformer and an electronic leakage control circuit are orderly and electrically connected, a signal source current transformer, a power current transformer and an electronic phase failure overload control circuit are electrically connected and electrically connected with the electronic leakage control circuit, a connecting wire between the current release and a binding post in the insulating casing goes through the zero sequence current transformer, the signal source current transformer, the power current transformer and the binding post to be electrically connected with an electric appliance, a three phase power supply is switched on and input into the electric appliance, current and voltage generated by the power current transformer is input into the electronic phase failure overload control circuit, when phase failure overload leakage failure of the electric appliance occurs, signal sources generated by the zero sequence current transformer and the signal source current transformer are input into the electronic leakage control circuit, the electronic phase failure overload control circuit automatically measures and controls to control the action of the voltage release, and the breaker automatically breaks a circuit to automatically protect the electric appliance from burning.

Description

The overload of loss of phase residual current circuit breaker

Affiliated technical field:

The utility model relates to the auto-cutout device that the electric leakage phase failure takes place a kind of automatic measuring and controlling three-phase electrical appliance; can regulate the setting current automatic measuring and controlling according to three-phase electrical appliance electricity consumption size of current; the three-phase electrical appliance surpasses the auto-cutout of specified adjusting setting current, especially three-phase electrical appliance the overload of loss of phase residual current circuit breaker that the auto-cutout of overload of loss of phase leak current fault energy shields takes place simultaneously.

Background technology:

At present; known circuit breaker function is little; residual current circuit breaker can only be leaked electricity at electrical appliance; short circuit works the effect of opening circuit, and omnipotent breaker, Research of Current Limiting Circuit Breaker electric current are fixed currents, can not be adjustable; electrical appliance is selected according to the circuit breaker fixed current; the scope of application is little, and the existing circuit breaker function is little, can not play multifunction protection to three-phase electrical appliance generation overload of loss of phase leak electricity short-circuit.

Summary of the invention:

Little in order to overcome the existing circuit breaker function; the scope of application is little; it is the overload of loss of phase residual current circuit breaker of one that the utility model provides a kind of multifunction protection; this circuit breaker can not only shield to the auto-cutout of three-phase electrical appliance generation overload of loss of phase leak electricity short-circuit; and be provided with phase failure indication, overload indication; can accurately indicate the overload of loss of phase fault, bring convenience to trouble shooting.

The utility model solves the used technical scheme of its technical problem: circuit breaker in insulation crust, and the current-release device, the voltage trip device, test is by group, test resistance.The electronic leakage control circuit is electrically connected; electronic leakage control circuit and zero sequence current mutual inductor; electronics overload of loss of phase control circuit is electrically connected; the signal source current transformer; power current transformer is electrically connected with electronics overload of loss of phase control circuit; in current-release device and the insulation crust between binding post connecting line pass zero sequence current mutual inductor; the signal source current transformer; power current transformer; binding post is electrically connected with electrical appliance in the insulation crust; three phase mains is by overload of loss of phase residual current circuit breaker input electrical appliance, and power current transformer produces current/voltage, input electronics overload of loss of phase control circuit; input electrical appliance three phase mains is carried out automatic measuring and controlling; electric leakage overload of loss of phase fault after taking place in electrical appliance, and zero sequence current mutual inductor, signal source current transformer produce signal source input electronic leakage control circuit; electronics overload of loss of phase control circuit; carry out automatic measuring and controlling; the action of control voltage trip device, the circuit breaker auto-cutout, the protection electrical appliance is not burnt.

The beneficial effects of the utility model are: when can electric leakage phase failure automatic measuring and controlling take place to the three-phase electrical appliance; three-phase electricity consumption electric current to electrical appliance carries out automatic measuring and controlling; behind three-phase electrical appliance generation overload of loss of phase leak current fault, the auto-cutout of overload of loss of phase residual current circuit breaker, protection electrical appliance.The electronic leakage control circuit adopts in the electronics overload of loss of phase control circuit, resistance, electric capacity, diode, thyristor, voltage stabilizing didoe, and elements such as light-emitting diode, triode summation current transformer, simple in structure.

Description of drawings:

Below in conjunction with drawings and Examples the utility model is further specified:

Fig. 1 is the utility model structural principle circuit diagram

Fig. 2 is the utility model electronics overload of loss of phase control circuit schematic diagram and be electrically connected electronic leakage control circuit schematic diagram

Fig. 3 is the utility model insulation crust exterior view.

Among the figure 1, circuit breaker 2, current-release device 3, voltage trip device 4, test resistance 5, test button

6, zero sequence current mutual inductor, 7, the electronic leakage control circuit, 8, electronics overload of loss of phase control circuit

9, signal source current transformer 10, power current transformer 11, electrical appliance (motor)

Embodiment:

In Fig. 1, in circuit breaker (1) current-release device (2) and the insulation crust between binding post connecting line pass zero sequence current mutual inductor (6), signal source current transformer (9), power current transformer (10), test resistance (4) is electrically connected with binding post in current-release device (2) insulation crust with test button (5) polyphone, voltage trip device (3) one ends are electrically connected with current-release device (2), electronic leakage control circuit (7) and current-release device (2), voltage trip device (3) other end, zero sequence current mutual inductor (6), electronics overload of loss of phase control circuit (8) is electrically connected, signal source current transformer (9), power current transformer (10) is electrically connected with electronics overload of loss of phase control circuit (8), and binding post is electrically connected with electrical appliance (motor) (11) in the insulation crust.

In Fig. 2, the composition of electronics overload of loss of phase control circuit (8) can be divided into: diode D1-D6, D15, capacitor C 1, C5 is electrically connected and forms rectification circuit, resistance R 2, zener diode D7, triode BG2 is electrically connected and forms voltage stabilizing circuit, resistance R 3, R8, R5, R22, R15, R16, capacitor C 2, C3, C4, diode D10, D16, D14, triode BG4, BG5, BG9 is electrically connected and forms timing circuit, resistance R 21, R20, R4, Light-Emitting Diode D11, triode BG3 is electrically connected and forms phase failure control circuit, resistance R 6, R10, R11, R12, R14, R17, adjustable resistance R23, light-emitting diode D12, triode BG6, BG7 is electrically connected and forms overload control circuit, resistance R 13, R18, R19, adjustable resistance R23, light-emitting diode D13, triode BG8 are electrically connected to form and regulate indicating circuit, resistance R 1, R7, diode D8, D9, triode BG1 are electrically connected and form the overload of loss of phase executive circuit.

In Fig. 3, Current Regulation adjustable resistance R23, phase failure indication light-emitting diode D11, overload indication light-emitting diode D12 regulate indication light-emitting diode D13.

Claims

1, overload of loss of phase residual current circuit breaker, in insulation crust, circuit breaker (1), current-release device (2) voltage trip device (3), test resistance (4), test button (5), zero sequence current mutual inductor (6), electronic leakage control circuit (7), electronics overload of loss of phase control circuit (8), signal source current transformer (9), power current transformer (10) are electrically connected to be formed, and it is characterized in that: signal source current transformer (9), power current transformer (10), electronics overload of loss of phase control circuit (8) are electrically connected and are electrically connected with electronic leakage control circuit (7).

2, overload of loss of phase residual current circuit breaker according to claim 1 is characterized in that: electronics overload of loss of phase control circuit (8) is electrically connected by rectification circuit, voltage stabilizing circuit, timing circuit, phase failure control circuit, overload control circuit, adjusting indicating circuit, overload of loss of phase executive circuit to be formed.

3, overload of loss of phase residual current circuit breaker according to claim 1, it is characterized in that: in the electronics overload of loss of phase control circuit (8), phase failure control circuit is electrically connected light-emitting diodes D11, overload control circuit is electrically connected light-emitting diode D12, regulates indicating circuit electrical connection light-emitting diode D13, overload control circuit, adjusting indicating circuit are electrically connected adjustable resistance R23, especially the Current Regulation adjustable resistance R23 on insulation crust surface, phase failure indication light-emitting diode D11, overload indication light-emitting diode D12 regulates indication light-emitting diode D13.