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High-efficiency and energy-saving AC contactor

An AC contactor, high-efficiency technology, used in relays, circuits, electrical components, etc., can solve problems such as power loss, heating and heating, and burning of excitation coils

Active Publication Date: 2018-03-06
浙江大起电子股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] 1. Unnecessary power consumption: As mentioned above, in the pull-in and holding phases, the excitation coils of conventional AC contactors are all connected with the "same" AC voltage, which makes the holding power too large, resulting in unnecessary electric energy loss;
[0012] 2. Heating: The evil result of unnecessary power loss is "heating and heating". In severe cases, it will even burn the excitation coil of the conventional AC contactor;
[0013] 3. Annoying AC noise

Method used

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Embodiment Construction

[0044] Below in conjunction with accompanying drawing, illustrate the embodiment of the present invention.

[0045] figure 2 It is a block diagram of the principle of the present invention, image 3 It is the schematic circuit diagram of embodiment 1. figure 2 Middle: L is the excitation coil in a conventional AC contactor, and A1 and A2 are its two connection ports; the dotted line box 100 represents the electronic unit 100 of the present invention.

[0046] combine figure 2 A high-efficiency and power-saving AC contactor, including a conventional contactor composed of a moving contact MC, a normally closed contact NC, a normally open contact NO, a moving iron core M, a static iron core G, a return spring F, and an excitation coil L Two parts of the AC contactor and the electronic unit 100 are characterized in that:

[0047] The electronic unit 100 is composed of a control signal generating circuit 101, a threshold circuit 102, a switch circuit 103, a step-down circuit...

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Abstract

The invention discloses an efficient and energy-saving alternating current contactor. The efficient and energy-saving alternating current contactor comprises a conventional alternating current contactor and an electronic unit (100), wherein the conventional alternating current contactor consists of movable contacts MC, normally closed contacts NC, normally-open contacts NO, a movable iron core M, a static iron core G, a reset spring F, and a magnet exciting coil L.

Description

technical field [0001] The invention relates to the field of low-voltage electrical appliances, in particular to a "high-efficiency and power-saving AC contactor" which is transformed from an electronic unit and can save power with high efficiency. Background technique [0002] Alternating Current Contactor (Alternating Current Contactor) is a low-voltage electrical appliance that is widely used. As of 2015, there are more than 1.1 billion AC contactors running online in my country, and the number of AC contactors is increasing at a rate of 80 million per year. Its working principle is to use the electromagnet to drive the movable contact to separate or close the normally closed contact or normally open contact, so as to cut off or connect the circuit. It is suitable for starting or controlling three-phase induction motors and other electrical equipment. [0003] figure 1 It is a working principle diagram of a conventional AC contactor. This conventional AC contactor is m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H47/04
CPCH01H47/04
Inventor 汪孟金孙浙胜
Owner 浙江大起电子股份有限公司
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