Power-saving AC contactor with power-saving unit

A technology of AC contactors and circuits, applied in relays, electrical components, circuits, etc., can solve problems such as complex electronic circuits, troublesome wiring, power loss, etc., and achieve a pleasing appearance
CN103413725BInactive Publication Date: 2015-10-28STATE GRID CORP OF CHINA +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
STATE GRID CORP OF CHINA
Publication Date
2015-10-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a power-saving type alternating current contactor with a power-saving unit. The power-saving alternating current contactor with the power-saving unit is composed of a first voltage-controlled switching circuit, an energy-storing circuit and a second voltage-controlled switching circuit, and is characterized in that the power-saving type alternating current contactor with the power-saving unit is a network provided with four ports, the port N1 and the port N2 are input ports of the network, and the port P1 and the port P2 are output ports of the network; the input port N1 and the input port N2 are connected with the S1 end and the S2 end of the AC voltage respectively, and the output port P1 and the output port P2 are connected with the A1 end and the A2 end of the magnet exciting coil L of a traditional alternating current contactor respectively; the N1 end, the first voltage-controlled switching circuit, the energy-storing circuit, the second voltage-controlled switching circuit and the N2 end are sequentially connected in series, the P1 end is led from the connecting position of the first voltage-controlled switching circuit and the energy-storing circuit, and the P2 end is led from the connecting position of the energy-storing circuit and the second voltage-controlled switching circuit.
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Description

technical field

[0001] The invention relates to the field of low-voltage electrical appliances, in particular to an electricity-saving AC contactor provided with an electricity-saving unit and having an electricity-saving function. Background technique

[0002] AC contactor is a low-voltage electrical appliance that is widely used. Its working principle is to use the electromagnet to drive the moving contact (moving contact) and the static contact (moving contact) to close or separate, so as to achieve the purpose of connecting or cutting off the circuit. It is suitable for starting or controlling three-phase induction motors and other electrical equipment.

[0003] figure 1 It is the working principle diagram of the traditional AC contactor. This traditional AC contactor is mainly composed of a moving iron core, a static iron core, an excitation coil, a return spring, a moving-break contact, and a moving-closing contact. When the excitation coil is connected to AC220V, ...

Claims

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