CN2322254Y

CN2322254Y - Compensation type low iron temp. ac contactor

Info

Publication number: CN2322254Y
Application number: CN 97245417
Authority: CN
Inventors: 刘克波; 迟景田; 仇道水; 王国龙
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-10-07
Filing date: 1997-10-07
Publication date: 1999-06-02
Anticipated expiration: 2007-10-07

Abstract

The utility model provides a compensation type low iron temp. AC contactor which comprises an AC contactor actuating coil CJ and a bridge rectifier U. Both ends of the AC contactor actuating coil CJ is connected in parallel with a filtering capacitor C2, then respectively connected with a positive and a negative electrodes of the bridge rectifier U. Both input ends of the bridge rectifier U are respectively connected with a terminal E and a terminal N; the terminal E is connected in series with a capacitor C1, and then connected with one end of a normally open auxiliary contact CJ of the AC contactor; the other end of the normally open auxiliary contact CJ is connected with a terminal D; a resistor R is connected in parallel with the capacitor C1. The utility model solves the problems of temperature reduction of an AC contactor iron core and loss compensation of reactive power.

Description

Compensation low iron temp A.C. contactor

The utility model relates to power domain, specifically a kind of compensation low iron temp A.C. contactor.

At present, sell on the market and industrial the A.C. contactor that widely uses, regardless of its form of expression, mostly alternating current is directly sent into the A.C. contactor actuation coil, like this A.C. contactor following shortcoming of ubiquity when actual working state: one, the iron core temperature is higher; Two, the control loop reactive loss is big, influences the power factor of electrical network.Thus, the A.C. contactor of this kind form has brought many worries to the user for a long time.

The purpose of this utility model is for solving above-mentioned technical deficiency part, provides a kind of iron core temperature lower, compensation low iron temp A.C. contactor that can compensating reactive power.

The purpose of this utility model is achieved through the following technical solutions: compensation low iron temp A.C. contactor, it has contactor actuation coil CJ and bridge rectifier U, the two ends of contactor actuation coil CJ filter capacitor C in parallel ₂After join with the positive and negative electrode of bridge rectifier U respectively again, the two ends of bridge rectifier U input join with terminal E, terminal N respectively, terminal E series capacitance C ₁The back joins with the end that auxiliary contact CJ often left by contactor, and the other end and the terminal D that auxiliary contact CJ often left by contactor join resistance R and capacitor C ₁Be in parallel.

Advantage of the present utility model: one, design science is reasonable, and it is provided with bridge rectifier and filter capacitor in A.C. contactor, gives the work of A.C. contactor actuation coil used for the higher direct current of quality, has avoided the generation of iron core temperature thus; It inserts electric capacity in its control loop, realized thus idle compensation, so improved the power factor of electrical network; Two, simple in structure, make easily, with low cost, safe and reliable.Extensive use of the present utility model can produce good social, economic benefit.

Figure of description is circuit theory diagrams of the present utility model.

In conjunction with the embodiments the utility model is described in further detail below with reference to Figure of description.

Compensation low iron temp A.C. contactor of the present utility model, it has contactor actuation coil CJ and bridge rectifier U, the two ends of contactor actuation coil CJ filter capacitor C in parallel ₂After join with the positive and negative electrode of bridge rectifier U respectively again, the two ends of bridge rectifier U input join with terminal E, terminal N respectively, terminal E series capacitance C ₁The back joins with the end that auxiliary contact CJ often left by contactor, and the other end and the terminal D that auxiliary contact CJ often left by contactor join resistance R and capacitor C ₁Be in parallel.

During making, various components and parts assemblings are got final product by above-mentioned requirements.During use, end with button QA among terminal E on the utility model and the controller K joins earlier, after again the node of terminal D and button TA, the button QA other end being joined, and then an end and the terminal A of button TA joined, the two ends of AC power respectively with terminal A, the terminal N work of getting final product of joining.

During operating state, contactor actuation coil CJ work when pressing the button QA, and impel its iron core adhesive, capacitor C behind the release button QA ₁Automatically enter operating state, i.e. capacitor C ₁Be connected in the middle of the The whole control loop with contactor actuation coil CJ, realized thus idle compensation, resistance R can be at any time with capacitor C simultaneously ₁Interior remaining charge discharging resisting falls, and to guarantee the reliability of contactor actuation coil CJ work, guarantees that thus the utility model in any situation misoperation does not take place.

Claims

1, compensation low iron temp A.C. contactor, it has contactor actuation coil CJ and bridge rectifier U, it is characterized in that: the two ends of contactor actuation coil CJ filter capacitor C in parallel ₂After join with the positive and negative electrode of bridge rectifier U respectively again, the two ends of bridge rectifier U input join with terminal E, terminal N respectively, terminal E series capacitance C ₁The back joins with the end that auxiliary contact CJ often left by contactor, and the other end and the terminal D that auxiliary contact CJ often left by contactor join resistance R and capacitor C ₁Be in parallel.