CN2603562Y

CN2603562Y - Leakage circuit breaker with phase-loss protection function

Info

Publication number: CN2603562Y
Application number: CN 03214875
Authority: CN
Inventors: 吕希文; 祁忠华
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-01-24
Filing date: 2003-01-24
Publication date: 2004-02-11
Anticipated expiration: 2013-01-24

Abstract

The utility model provides a leakage circuit breaker with phase-missing and phase-failure protection function, the structure comprises a switch linkage K, a resistance R, a hand-controlled switch AN, a zero-sequence current transformer F, T2, T3 and T4, a leakage unbuttoned device L, an electronic magnification circuit A and a phase-missing and phase-failure protection circuit B, the resistance R and the hand-controlled switch AN are connected in series between the A phase and the C phase of the three-phase power source A, the electric magnification circuit A and the phase-missing and phase-failure protection circuit B connected by circuit in series are separately connected with the zero-sequence current transformer F, T2, T3, T4 on the three-phase current wire and arranged on the connection engine D, the two ends of the primary coil of the leakage unbuttoned device L are connected with the electronic magnification circuit A, and the two ends of the secondary coil are separately connected with the A phase and the C phase of the three-phase power source wire. The leakage circuit breaker with phase-missing and phase-failure protection function of the utility model has characteristics of reasonable design, simple structure, easy production, small volume, convenient to use, low cost, high sensitivity and strong anti-interference ability compared with current technology, thus has very good generalizing and using value.

Description

Residual current circuit breaker with phase shortage phase failure protection function

1, technical field

The utility model relates to a kind of electronic product; specifically a kind ofly in the three-phase residual current circuit breaker, install a circuit module with phase shortage phase failure protection function additional, thereby constitute the residual current circuit breaker that integrates electric leakage, overload, short circuit, phase shortage and phase failure protection function with phase shortage phase failure protection function.

2, technical background

Factory, mine, construction, field irrigation all be unable to do without various low pressure residual current circuit breaker (three-phase) and carry out the overload short circuit of person electric shock and equipment is effectively protected; but in service in everyday devices (threephase motor) is usually burnt motor because of the phase failure, overload, short circuit.Domestic more advanced overload of loss of phase protective device can not use separately because of it, is used the effect that just can reach protection with button, A.C. contactor, and the person gets an electric shock also need install earth leakage protective device, has so not only increased cost but also has increased installation difficulty.Therefore, design is a kind of has electric leakage, overload, short circuit, phase failure protection function and is badly in need of very much in the residual current circuit breaker of one.

3, summary of the invention

The purpose of this utility model provide a kind of simple in structure, production cost is low, be easy to process, integrate the residual current circuit breaker with phase shortage phase failure protection function of electric leakage, overload, short circuit, phase failure protection function.

The purpose of this utility model realizes in the following manner; its structure is by linked switch K; resistance R; hand switch AN; zero sequence current mutual inductor F; T2; T3; T4; leakage tripping device L; electronic amplification circuit A and phase shortage open-phase protection circuit B form; by being arranged on the zero sequence current mutual inductor F on the three-phase power line; T2; T3; whether T4 detects three-phase power line and leaks electricity; overload; the phase shortage and the phase failure; zero sequence current mutual inductor F; T2; T3; T4 passes to phase shortage open-phase protection circuit B and electronic amplification circuit A with detected signal; process is to after the signal processing; electronic amplification circuit A passes to leakage tripping device L with signal; by leakage tripping device L to interlock K switch effect; decide switch closure to play protective effect, can do test by this protector of closed pair of hand switch AN and use motor D.

4, description of drawings

Accompanying drawing 1 is the circuit theory schematic diagram with residual current circuit breaker of phase shortage phase failure protection function;

Accompanying drawing 2 is the electrical block diagram with residual current circuit breaker of phase shortage phase failure protection function.

5, embodiment

Explain below with reference to Figure of description the residual current circuit breaker with phase shortage phase failure protection function of the present utility model being done.

Residual current circuit breaker with phase shortage phase failure protection function of the present utility model; its structure is by linked switch K; resistance R; hand switch AN; zero sequence current mutual inductor F; T2; T3; T4; leakage tripping device L; electronic amplification circuit A and phase shortage open-phase protection circuit B constitute; resistance R and hand switch AN be serially connected in three phase mains A mutually and C mutually between; the electronic amplification circuit A that is serially connected by circuit; phase shortage open-phase protection circuit B respectively be arranged on the three-phase electricity streamline that is connected motor D on zero sequence current mutual inductor F; T2; T3; T4 joins; primary coil two ends and the electronic amplification circuit A of leakage tripping device L join, and the secondary coil two ends of leakage tripping device L join with C mutually with the A of three-phase power line respectively.

Electronic amplification circuit A is by binding post 1-5; diode D1-D4; thyristor SCR; metalfilmresistor R1-R4; piezo-resistance R5; capacitor C 1-C7; electrochemical capacitor C8 and integrated circuit (IC) 1 are formed; the 8 pin serial connection metalfilmresistor R1 of integrated circuit (IC) 1; diode D1 and piezo-resistance R5 and binding post 1 join; contact between binding post 2 and diode D1 and the piezo-resistance R5 joins; contact between the end of diode D2 and diode D1 and the piezo-resistance R5 joins; other end ground connection; diode D3 and D4 are serially connected between the contact and ground wire between diode D1 and the metalfilmresistor R1; contact between binding post 3 and diode D3 and the D4 joins; the anode terminating diode D1 of thyristor SCR and the contact between the metalfilmresistor R1; cathode terminal ground connection; the control utmost point is connected in series back ground connection with capacitor C 7; 7 pin of integrated circuit (IC) 1 and the anode tap of capacitor C 7 and thyristor join; electrochemical capacitor C8 is connected between 8 pin and ground wire of integrated circuit (IC) 1; capacitor C 6 is connected between 6 pin and ground wire of integrated circuit (IC) 1; 4 of capacitor C 5 one ends and integrated circuit (IC) 1; 5 pin join; other end ground connection; capacitor C 4 and metalfilmresistor are serially connected with between ground wire and the binding post 5; capacitor C 4 is connected on integrated circuit 2; between 3 pin; capacitor C 3 is connected between 1 pin and ground wire of integrated circuit (IC) 1; capacitor C 2 is connected to 1 of integrated circuit (IC) 1; between 2 pin; metalfilmresistor R2 is connected between 1 pin and binding post 4 of integrated circuit (IC) 1; capacitor C 1; be connected to binding post 4 after the metalfilmresistor R4 parallel connection; between 5; binding post 4; joined with zero sequence current mutual inductor F in 5 minutes; 3 pin of regulator block IC2 among binding post 4 and the phase shortage open-phase protection circuit B join, and 7 pin of the integrated circuit (IC) 3 among binding post 5 and the phase shortage open-phase protection circuit B join.

Phase shortage open-phase protection circuit B is by relay switch JK1; JK2; fuse FU; transformer T1; current transformer T2; T3; T4; diode D5-D7; D11-D13; voltage stabilizing didoe D8-D10; light-emitting diode D14; bridge rectifier ZL; electrochemical capacitor C9; C11; C13; C16-C18; C20; ceramic disc capacitor C10; C12; C14; C15; C19; C21; resistance R 6-R12; triode VR1-VR3; regulator block IC2; relay J; integrated circuit (IC) 3 is formed; the primary coil of transformer T1 and fuse FU; relay switch JK1; JK2 is serially connected with three-phase power line A phase; between the C phase; secondary coil joins with the end that exchanges of bridge rectifier ZL; the minus earth of bridge rectifier ZL; anodal 1 pin with regulator block IC2 joins; electrochemical capacitor C18 be connected between 1 pin and ground wire of regulator block IC2 after ceramic disc capacitor C19 is in parallel; the 2 pin ground connection of regulator block IC2; electrochemical capacitor C20 be connected between 3 pin and ground wire of regulator block IC2 after ceramic disc capacitor C21 is in parallel; resistance R 11; diode D12; D11 is serially connected between the collector electrode of 3 pin of regulator block and triode VR1; diode D5; resistance R 6 is serially connected between the base stage of 1 end of current transformer T2 and triode VR1; 2 ends of current transformer T2 and the collector electrode of triode VR2 join; electrochemical capacitor C9 be connected to diode D5 after ceramic disc capacitor C10 is in parallel; between the collector electrode of contact between the resistance R 6 and triode VR2; voltage stabilizing didoe D8 is connected between the collector electrode of the base stage of triode VR1 and triode VR2; diode D6; resistance R 7 is serially connected between the base stage of 1 end of current transformer T3 and triode VR2; 2 ends of current transformer T3 and the collector electrode of triode VR3 join; between electrochemical capacitor C11 and the collector electrode that is connected to contact between diode D6 and the resistance R 7 and triode VR3 after ceramic disc capacitor C12 is in parallel; voltage stabilizing didoe D9 is connected between the collector electrode of the base stage of triode VR2 and triode VR3; diode D7; resistance R 8 is serially connected between the base stage of 1 end of current transformer T4 and triode VR3; series resistor R9 ground connection after 2 ends of current transformer T3 and the emitter of triode VR3 join; electrochemical capacitor C13 be connected to diode D7 after ceramic disc capacitor C14 is in parallel; between the emitter of contact between the resistance R 8 and triode VR3; voltage stabilizing didoe D10 is connected between the emitter of the base stage of triode VR3 and triode VR3; resistance R 10; ceramic disc capacitor C15; be connected to diode D11 after the electrochemical capacitor C16 parallel connection; between the contact and ground wire between the D12; diode D13 be connected between 3 pin and ground wire of integrated circuit (IC) 3 after relay J is in parallel; electrochemical capacitor C17 is connected between 6 pin and ground wire of integrated circuit (IC) 3; 1 pin ground connection of integrated circuit (IC) 3; 2 pin meet diode D11; contact between the D12; 4 pin of integrated circuit (IC) 3; 8 pin also connect the back and join with 3 pin of regulator block IC2; resistance R 12; light-emitting diode D14 is serially connected with between 3 pin and ground wire of regulator block IC2, and 7 pin of integrated circuit (IC) 3 are connected to resistance R 12; contact between the light-emitting diode D14.

Its processing and fabricating of residual current circuit breaker with phase shortage phase failure protection function of the present utility model is very simple and convenient, and processing and fabricating gets final product shown in the by specification accompanying drawing.Integrated circuit model in the circuit is respectively that IC1 is M54123, and IC2 is 7812, and IC3 is NE555, and other components and parts are universal standard electronic devices and components.

Residual current circuit breaker with phase shortage phase failure protection function of the present utility model is compared with prior art; have reasonable in design, simple in structure, be easy to processing, volume is little, easy to use, cost is low, highly sensitive, characteristics such as antijamming capability is strong; thereby, have good value for applications.

Except that the described technical characterictic of specification, be the known technology of those skilled in the art.

Claims

1; residual current circuit breaker with phase shortage phase failure protection function; comprise linked switch K; resistance R; hand switch AN; zero sequence current mutual inductor F; T2; T3; T4; leakage tripping device L; electronic amplification circuit A and phase shortage open-phase protection circuit B; it is characterized in that resistance R and hand switch AN be serially connected in three phase mains A mutually and C mutually between; the electronic amplification circuit A that is serially connected by circuit; phase shortage open-phase protection circuit B respectively be arranged on the three-phase electricity streamline that is connected motor D on zero sequence current mutual inductor F; T2; T3; T4 joins; primary coil two ends and the electronic amplification circuit A of leakage tripping device L join, and the secondary coil two ends of leakage tripping device L join with C mutually with the A of three-phase power line respectively.

2; residual current circuit breaker with phase shortage phase failure protection function according to claim 1; it is characterized in that electronic amplification circuit A is by binding post 1-5; diode D1-D4; thyristor SCR; metalfilmresistor R1-R4; piezo-resistance R5; capacitor C 1-C7; electrochemical capacitor C8 and integrated circuit (IC) 1 are formed; the 8 pin serial connection metalfilmresistor R1 of integrated circuit (IC) 1; diode D1 and piezo-resistance R5 and binding post 1 join; contact between binding post 2 and diode D1 and the piezo-resistance R5 joins; contact between the end of diode D2 and diode D1 and the piezo-resistance R5 joins; other end ground connection; diode D3 and D4 are serially connected between the contact and ground wire between diode D1 and the metalfilmresistor R1; contact between binding post 3 and diode D3 and the D4 joins; the anode terminating diode D1 of thyristor SCR and the contact between the metalfilmresistor R1; cathode terminal ground connection; the control utmost point is connected in series back ground connection with capacitor C 7; 7 pin of integrated circuit (IC) 1 and the anode tap of capacitor C 7 and thyristor join; electrochemical capacitor C8 is connected between 8 pin and ground wire of integrated circuit (IC) 1; capacitor C 6 is connected between 6 pin and ground wire of integrated circuit (IC) 1; 4 of capacitor C 5 one ends and integrated circuit (IC) 1; 5 pin join; other end ground connection; capacitor C 4 and metalfilmresistor are serially connected with between ground wire and the binding post 5; capacitor C 4 is connected on integrated circuit 2; between 3 pin; capacitor C 3 is connected between 1 pin and ground wire of integrated circuit (IC) 1; capacitor C 2 is connected to 1 of integrated circuit (IC) 1; between 2 pin; metalfilmresistor R2 is connected between 1 pin and binding post 4 of integrated circuit (IC) 1; capacitor C 1; be connected to binding post 4 after the metalfilmresistor R4 parallel connection; between 5; binding post 4; joined with zero sequence current mutual inductor F in 5 minutes; 3 pin of regulator block IC2 among binding post 4 and the phase shortage open-phase protection circuit B join, and 7 pin of the integrated circuit (IC) 3 among binding post 5 and the phase shortage open-phase protection circuit B join.

3; residual current circuit breaker with phase shortage phase failure protection function according to claim 1; it is characterized in that phase shortage open-phase protection circuit B is by relay switch JK1; JK2; fuse FU; transformer T1; current transformer T2; T3; T4; diode D5-D7; D11-D13; voltage stabilizing didoe D8-D10; light-emitting diode D14; bridge rectifier ZL; electrochemical capacitor C9; C11; C13; C16-C18; C20; ceramic disc capacitor C10; C12; C14; C15; C19; C21; resistance R 6-R12; triode VR1-VR3; regulator block IC2; relay J; integrated circuit (IC) 3 is formed; the primary coil of transformer T1 and fuse FU; relay switch JK1; JK2 is serially connected with three-phase power line A phase; between the C phase; secondary coil joins the minus earth of bridge rectifier ZL with the end that exchanges of bridge rectifier ZL.Anodal 1 pin with regulator block 1C2 joins, electrochemical capacitor C18 be connected between 1 pin and ground wire of regulator block IC2 after ceramic disc capacitor C19 is in parallel, the 2 pin ground connection of regulator block IC2, electrochemical capacitor C20 be connected between 3 pin and ground wire of regulator block IC2 after ceramic disc capacitor C21 is in parallel, resistance R 11, diode D12, D11 is serially connected between the collector electrode of 3 pin of regulator block and triode VR1, diode D5, resistance R 6 is serially connected between the base stage of 1 end of current transformer T2 and triode VR1,2 ends of current transformer T2 and the collector electrode of triode VR2 join, electrochemical capacitor C9 be connected to diode D5 after ceramic disc capacitor C10 is in parallel, between the collector electrode of contact between the resistance R 6 and triode VR2, voltage stabilizing didoe D8 is connected between the collector electrode of the base stage of triode VR1 and triode VR2, diode D6, resistance R 7 is serially connected between the base stage of 1 end of current transformer T3 and triode VR2,2 ends of current transformer T3 and the collector electrode of triode VR3 join, between electrochemical capacitor C11 and the collector electrode that is connected to contact between diode D6 and the resistance R 7 and triode VR3 after ceramic disc capacitor C12 is in parallel, voltage stabilizing didoe D9 is connected between the collector electrode of the base stage of triode VR2 and triode VR3, diode D7, resistance R 8 is serially connected between the base stage of 1 end of current transformer T4 and triode VR3, series resistor R9 ground connection after 2 ends of current transformer T3 and the emitter of triode VR3 join, electrochemical capacitor C13 be connected to diode D7 after ceramic disc capacitor C14 is in parallel, between the emitter of contact between the resistance R 8 and triode VR3, voltage stabilizing didoe D10 is connected between the emitter of the base stage of triode VR3 and triode VR3, resistance R 10, ceramic disc capacitor C15, be connected to diode D11 after the electrochemical capacitor C16 parallel connection, between the contact and ground wire between the D12, diode D13 be connected between 3 pin and ground wire of integrated circuit (IC) 3 after relay J is in parallel, electrochemical capacitor C17 is connected between 6 pin and ground wire of integrated circuit (IC) 3,1 pin ground connection of integrated circuit (IC) 3,2 pin meet diode D11, contact between the D12,4 pin of integrated circuit (IC) 3,8 pin also connect the back and join with 3 pin of regulator block IC2, resistance R 12, light-emitting diode D14 is serially connected with between 3 pin and ground wire of regulator block IC2, and 7 pin of integrated circuit (IC) 3 are connected to resistance R 12, contact between the light-emitting diode D14.