CN2717079Y

CN2717079Y - Distributing box for household use

Info

Publication number: CN2717079Y
Application number: CN 200420072819
Authority: CN
Inventors: 谭天文; 张良琼; 雷高潮; 袁仲义; 谭俐
Original assignee: HENAN OL FIELD SHENGDA INDUSTRIAL Co Ltd
Current assignee: HENAN OL FIELD SHENGDA INDUSTRIAL Co Ltd
Priority date: 2004-06-29
Filing date: 2004-06-29
Publication date: 2005-08-10
Anticipated expiration: 2014-06-29

Abstract

The utility model relates to a distributing box for household use, mainly comprising a box body and a box door. The alternating current with 220V and 50HZ accesses the input end, and reaches the output end after passing through a knife switch, a current leakage protector, an alternating current contactor and a combined switch. A voltage abnormal protector is added in the circuit, and the voltage abnormal protector is composed of an, over-voltage relay, an under-voltage relay and an intermediate relay. When the voltage is abnormal (over 250V or below 180V ), the voltage abnormal protector acts, the alternating current contactor is made to lose voltage and be ungeared, the power supply is cut off automatically, therefore, the household appliance is safe from the damages of over-voltage and under-voltage, the damage to the household appliance because of frequent stop and delivery of current is avoided, and in particular, the damage to air conditioner and refrigerator compressor is avoided. The utility model is in particular suitable for the distributing power for civil house.

Description

A kind of Domestic distributing box

One, technical field

The utility model relates to a kind of low tension switch case, especially a kind of residential houses distribution box.

Two, background technology

At present; huge numbers of families use the house lead in switch-box that generally adopts; still be the knife switch that adopts the band fuse, have the unit switch of thermal element or be with earth leakage protective unit switch; it is mainly to crossing the effect that is loaded with delay cutting power; powerless to short circuit, electric voltage exception, cause user's household electrical appliances quite a lot to burn out or household electrical appliances catch fire.Along with the continuous progress of society, various household electrical appliances have spread to the huge numbers of families in town and country, and many families have expensive high-grade household electrical appliances.Since lack can relieved use tame electrical protective device, cause the thing that the person gets an electric shock, household electrical appliances catch fire, household electrical appliances damage to happen occasionally, bring unnecessary economic loss and moral injury for family and society.

Three, summary of the invention

The purpose of this utility model is, at the deficiencies in the prior art, provide a kind of can be to the short circuit of household electricity, the Domestic distributing box that electric voltage exception is effectively protected.

Realize that the technical scheme that the purpose of this utility model adopted is: this Domestic distributing box; mainly by casing; chamber door is formed; input inserts 220V; the 50HZ alternating current; through knife switch; earth leakage protective device; A.C. contactor; unit switch is to output; in circuit, set up an electric voltage exception protection device; this protective device is by overvoltage relay; under-voltage replay and auxiliary relay are formed; be connected overvoltage relay and under-voltage replay on the power supply; be connected auxiliary relay by its overvoltage relay contact with the under-voltage replay contact; auxiliary relay connects A.C. contactor; be connected to three groups of unit switches by A.C. contactor, divide three road distribution.

This distribution box has been set up signal, control, voltage indication loop, and the chamber door face is provided with 7 indicator lights: be respectively power lamp, leak electricity short-circuit signal lamp, K ₁Loop signal lamp, K ₂Loop signal lamp, K ₃Loop signal lamp, overvoltage signal lamp, low voltage signal lamp, and voltmeter stop (sending) eletric button.

The A.C. contactor of this distribution box is selected for use not have to press to lose and is put A.C. contactor.

Earth leakage protective device is selected follow-on residual current circuit breaker for use.

Unit switch is selected for use and is carried overload protection secondary unit switch.

Owing to adopted technique scheme; the utility model product integrates control, protection, signal, reasonable distribution; when indoor arbitrary place overload, short circuit, electric leakage or electric voltage exception; the corresponding protection starting; indicator light tells that circuit breaks down in your family; no matter external cause or indoor reason have caused power failure, and signal lamp on the chamber door panel and voltmeter tell that clearly you are the power failure that unusual or indoor that class fault of external power source causes.Thereby can effectively protect short circuit, electric voltage exception and the electric leakage of household electricity, guarantee the person and household electrical appliances safety.

Four, description of drawings

Fig. 1 is circuit theory diagrams of the present utility model.

Fig. 2 is a secondary circuit expanded view of the present utility model.

Five, embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

Referring to Fig. 1 and Fig. 2; the utility model mainly is made up of casing, chamber door; input inserts 220V, 50HZ alternating current; through knife switch HK, earth leakage protective device DZ, A.C. contactor CJ, unit switch K to output; in circuit, set up an electric voltage exception protection device b; this protective device is made up of overvoltage relay GDY, under-voltage replay DDY and intermediate relay ZJ; be connected overvoltage relay GDY and under-voltage replay DDY on the power supply, by its overvoltage relay contact GDY ₁With under-voltage replay contact DDY ₂Connect intermediate relay ZJ, intermediate relay ZJ connects A.C. contactor CJ, is connected to three groups of unit switch K by A.C. contactor CJ ₁, K ₂And K ₃, divide three road distribution.(be higher than 250V or be lower than 180V) when electric voltage exception, electric voltage exception protection device b action makes A.C. contactor CJ no-voltage trip, cuts off the electricity supply automatically, thereby makes household electrical appliance avoid overtension, low excessively infringement.

For conveniently using and keeping in repair, this distribution box has been set up signal, control, voltage indication loop, and the chamber door face is provided with 7 indicator lights: be respectively power lamp HL _-1, leak electricity short-circuit signal lamp HL _-2, K ₁Loop signal lamp HL _-3, K ₂Loop signal lamp HL _-4, K ₃Loop signal lamp HL _-5, overvoltage signal lamp HL _-6, low voltage signal lamp HL _-7, and voltmeter V, stop (sending) eletric button LA, make its running status and failure condition perfectly clear, and be convenient to operation and trouble shoot processing.

The A.C. contactor CJ of this distribution box selects for use not have to press to lose puts A.C. contactor; Earth leakage protective device DZ selects follow-on residual current circuit breaker for use; Unit switch K ₁, K ₂And K ₃Select for use and carry overload protection secondary unit switch.

Adopt the utility model scheme, 220V, 50HZ alternating current insert from outdoor ammeter box WH, connect power lamp HL _-1With knife switch HK, meet voltmeter V from knife switch HK, earth leakage protective device DZ connects control guard signal loop from knife switch HK through insurance R, connects leak electricity short-circuit signal lamp HL from earth leakage protective device DZ _-2With A.C. contactor CJ.Connect unit switch K from A.C. contactor CJ ₁, K ₂And K ₃, can divide kitchen, air-conditioning and illumination three road distribution.

Knife switch HK and unit switch K in case ₁, K ₂And K ₃All at closing position, only need press and stop (sending) eletric button LA and can reach the whole family and have a power failure or send.Be in operation, unusual when outer power voltage, electric voltage exception protection device b moves in A.C. contactor CJ, makes A.C. contactor CJ not have the mistake of pressure and puts and the general supply of breaking; When indoor when electric leakage, short circuit are arranged, start through the zero-sequence current component of earth leakage protective device DZ self band, earth leakage protective device DZ is threaded off cut off general supply; When three arbitrary passing by in loop are carried unit switch K ₁, K ₂And K ₃Corresponding thermal element start, disconnect corresponding overload loop, all the other two-way are operation as usual.

Claims

1, a kind of Domestic distributing box; mainly form by casing, chamber door; input inserts 220V, 50HZ alternating current; arrive output through knife switch (HK), earth leakage protective device (DZ), A.C. contactor (CJ), unit switch (K); it is characterized in that: in circuit, set up an electric voltage exception protection device (b); this protective device is made up of overvoltage relay (GDY), under-voltage replay (DDY) and auxiliary relay (ZJ); be connected overvoltage relay (GDY) and under-voltage replay (DDY) on the power supply, by its overvoltage relay contact (GDY ₁) and under-voltage replay contact (DDY ₂) connecting auxiliary relay (ZJ), auxiliary relay (ZJ) connects A.C. contactor (CJ), is connected to three groups of unit switch (K by A.C. contactor (CJ) ₁, K ₂And K ₃), divide three road distribution.

2, Domestic distributing box according to claim 1 is characterized in that: this distribution box has been set up signal, control, voltage indication loop, and the chamber door face is provided with 7 indicator lights: be respectively power lamp (HL _-1), leak electricity short-circuit signal lamp (HL _-2), K ₁Loop signal lamp (HL _-3), K ₂Loop signal lamp (HL _-4), K ₃Loop signal lamp (HL _-5), overvoltage signal lamp (HL _-6), low voltage signal lamp (HL _-7), and voltmeter (V), stop (sending) eletric button (LA).

3, Domestic distributing box according to claim 1 and 2 is characterized in that: A.C. contactor (CJ) is selected for use not have to press to lose and is put A.C. contactor.

4, Domestic distributing box according to claim 1 and 2 is characterized in that: earth leakage protective device (DZ) is selected follow-on residual current circuit breaker for use.

5, Domestic distributing box according to claim 1 and 2 is characterized in that: unit switch (K ₁, K ₂And K ₃) select for use and carry overload protection secondary unit switch.