Automatic transfer switch control circuit
An automatic transfer switch and control circuit technology, applied in circuit devices, electrical components, emergency power supply arrangements, etc., can solve the problems of large driving force, complex mechanism, large volume, etc., and achieve the effect of less consumables and reduced volume
Active Publication Date: 2018-10-23
WUXI HANKWANG ELECTRIC
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- Description
- Claims
- Application Information
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Problems solved by technology
[0002] The general mechanism of PC-level high-current automatic transfer switch electrical three-position switch is relatively complicated, the design of the electromagnetic system is relatively difficult, and the driving force required is large, resulting in relatively large volume, especially the limitation of the switch mechanism
Method used
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[0021] The present invention will be further described below with reference to the specific drawings and embodiments.
[0022] The automatic transfer switch appliance includes a controller and an electromagnetic system; the key point of the present invention is to introduce the circuits involved in the electromagnetic system, and the mechanical part of the electromagnetic system is only briefly introduced.
[0023] like figure 1 As shown, the control circuit of the automatic transfer switch includes contactors KM1, KM2, KM3, KM4, KM5, intermediate relay R, backup power closing selection coils SC1, SC2; main coil CC, and multiple micro switches;
[0024] The main coil CC is used as the closing coil and the tripping coil; the contactors KM1, KM2, KM3, KM4, KM5 are used as the common power supply side contactor, the standby power supply side contactor, the closing contactor, the standby power selection contactor, and the tripping contactor respectively. Buckle contactor;
[002...
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The invention provides a control circuit of an automatic change-over switch device. The control circuit comprises a contactor KM1, a contactor KM2, a contactor KM3, a contactor KM4, a contactor KM5, an intermediate relay R, a backup power supply closing selection coil SC1, a backup power closing selection coil SC2, a primary coil CC and a plurality of microswitches, wherein a controller monitors the working conditions of two paths of power supplies in real time; and one path of power supply is converted into the other path of power supply as a power supply source when broken down. By the control circuit, reliable switching of a normal power supply and a backup power supply is achieved; reliable operation of an important load is ensured; the electric control principle is simple and clear; a switch connection structure is reasonable; the switch device does not generate a misoperation; and power supply system switching is accurately and timely finished. Power supply switching of the automatic change-over switch device can be finished only by one set of electromagnetic system, so that the volume of switch bodies is greatly reduced; the consumed materials are few; the switches are controlled to act through electric interlocking of several groups of contactors; and the control circuit is simple and reliable.
Description
technical field [0001] The invention relates to an automatic transfer switch electrical appliance, in particular to a control circuit of the automatic transfer switch electrical appliance. Background technique [0002] The general mechanism of the PC-level high-current automatic transfer switch electrical three-position switch is relatively complex, the design of the electromagnetic system is relatively difficult, and the required driving force is large, resulting in a relatively large volume, especially the limitation of the switch mechanism. [0003] The automatic transfer switch electrical appliance realizes the closing and opening process and control of the common power supply to the standby power supply, and the standby power supply to the common power supply; the control of the automatic transfer switch electrical appliance needs to be accurate, reasonable and reliable; the control circuit design of the automatic transfer switch electrical appliance is particularly impo...
Claims
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IPC IPC(8): H02J9/06
CPCH02J9/061Y02B70/30Y04S20/20
Inventor 安建珍杨海军管柯王军王树利顾小群
Owner WUXI HANKWANG ELECTRIC