CN2314465Y - Compensative low iron-core temperature A.C. contactor - Google Patents

Abstract

The utility model provides a compensative low iron-core temperature AC contactor. Both ends of an actuating coil CJ of the AC contactor are connected in parallel with a filtering capacitor C2, then respectively connected with a positive and a negative electrodes of a bridge rectifier U. One end of the bridge rectifier U is connected with a terminal N, and the other end is connected in series with a capacitance C1, then connected with a terminal E. Both ends of the capacitor C1 are connected in parallel with a normally closed auxiliary contact CJ of the AC contactor; the contacts of the capacitor C1 and the contact CJ are connected with one end of a normally open auxiliary contact CJ of the AC contactor, and the other end of the normally open auxiliary contact CJ is connected with a terminal D. The utility model solves the problems on reduced iron-core temperature of the AC contactor 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, an end and the terminal N of bridge rectifier U input join, other end series capacitance C ₁The back joins capacitor C with terminal E ₁The normally closed auxiliary contact CJ of two ends contactor in parallel, capacitor C ₁, the node of the normally closed auxiliary contact CJ of contactor and the end that auxiliary contact CJ often left by contactor join, the other end and the terminal D that auxiliary contact CJ often left by contactor join.

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, an end and the terminal N of bridge rectifier U input join, 1003 other end series capacitance C ₁The back joins capacitor C with terminal E ₁The normally closed auxiliary 93.1 contact CJ of two ends contactor in parallel, capacitor C ₁, the node of the normally closed auxiliary contact CJ of contactor and the end that auxiliary contact CJ often left by contactor join, the other end and the terminal D that auxiliary contact CJ often left by contactor join.

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, and simultaneously, capacitor C 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, when pressing the button TA, contactor actuation coil CJ dead electricity, iron core discharges, and enters initial condition.

Claims (1)

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, an end and the terminal N of bridge rectifier U input join, other end series capacitance C ₁The back joins capacitor C with terminal E ₁The normally closed auxiliary contact CJ of two ends contactor in parallel, capacitor C ₁, the node of the normally closed auxiliary contact CJ of contactor and the end that auxiliary contact CJ often left by contactor join, the other end and the terminal D that auxiliary contact CJ often left by contactor join.

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