A control structure and control method of an AC contactor
A technology of AC contactor and control structure, which is applied in relays, electromagnetic relays, detailed information of electromagnetic relays, etc. It can solve problems such as excessive noise, high temperature rise of coil electrification, etc., and achieve energy consumption improvement, small time accuracy requirements, and feasibility sex high effect
Active Publication Date: 2019-04-09
XIAN UNIV OF SCI & TECH
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Problems solved by technology
[0004] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a control structure and control method of an AC contactor, which avoids the problems of long-term charging of the coil, excessive temperature rise and excessive noise in the original AC contactor control method. Provides the stability and safety of AC contactors
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[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. The embodiments described herein are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0026] see figure 1 , the control structure of the present invention comprises a stepping motor 7, a support 13, a movable rod 14 and a stepping motor drive; The normally closed static contact is installed on the bracket 13, the normally open movable contact and the normally closed movable contact of the contactor are installed on the upper section of the movable rod 14, and the normally open movable contact, the normally closed movable contact and the norm...
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The invention discloses an alternating current contactor control structure and control method. Electromagnetic coupling of an alternating current contactor in the prior art is changed into mechanicaltransmission coupling. The combination of a stepping motor, a matched screw hollow shaft, a solid shaft and a movable rod is used to replace a silicon steel sheet and a copper winding. The problems ofoverheating and over-high noise of a long-term charged coil of an original alternating current contactor control method are avoided. The stability, safety and energy consumption are greatly improved.The structure is free of electromagnetic coupling. Without windings and silicon steel sheets, heat and resonance are avoided. In the process of controlling static and dynamic contacts of the alternating current contactor, overheating and over-high noise are avoided.
Description
【Technical field】 [0001] The invention belongs to the field of relay control and relates to a control structure of an AC contactor. 【Background technique】 [0002] The strong oil circulation air-cooled transformer with a voltage level above 110kV has strict operating requirements for the winding and oil surface temperature. Its cooling system mainly relies on an external high-power fan. Since the fan needs to run continuously for a long time, the AC contactor used to control the fan operation It must be put into operation safely and reliably. Electromagnetic connection will generate heat and resonance, so there are 4-5 groups (12-15 in total) of AC contactors in the cooler control box. The problem of excessive temperature rise and excessive noise. The temperature rise even reaches more than 80K, and the high temperature rise of the electromagnetic structure of the AC contactor will reduce the service life, requiring frequent inspection or replacement by maintenance personnel...
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IPC IPC(8): H01H50/64H01H47/02
CPCH01H47/02H01H50/64
Inventor 岳改丽李柯娜和健鲁磊李文陈莎党威望
Owner XIAN UNIV OF SCI & TECH