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Special protector for large motor

A protector and motor technology, applied in the electrical field, can solve the problems of high overvoltage amplitude, large energy, system short circuit, etc., and achieve the effects of timely and reliable action, intuitive measurement parameters, and sensitive response.

Inactive Publication Date: 2014-09-24
安徽金捷光电科技有限公司
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0002] When a large motor is switched off, the overvoltage generated has a high amplitude and large energy. However, due to the limitation of the manufacturing process, size and cost of ordinary overvoltage protectors, it is difficult to withstand the energy of the overvoltage and cause the protector to generate heat. Breakdown damage, even cause system short circuit accident

Method used

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  • Special protector for large motor

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Embodiment Construction

[0009] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0010] Such as figure 1 As shown, a special protector for large motors includes a microcomputer controller, which is connected with a touch key input module for inputting instructions, a current and voltage transformer, a fuse, a discharge module, an explosion-proof circuit, a display screen, and a cooling module. , temperature control module, protection relay and alarm relay, combining large-capacity zinc oxide valve, discharge gap and fuse to limit the overvoltage generated when the large motor is broken, and when the protector is damaged by thermal breakdown, the protection The controller is safely separated from the system to avoid short-circuit accidents. The temperature control module is used to detect the temperature of the motor and tran...

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Abstract

The invention provides a special protector for a large motor, and relates to the technical field of electrical. The special protector comprises a microcomputer controller; a touch key input module used for inputting an order, a current voltage mutual inductor, a fuse, a discharging module, an explosion-proof circuit, a display screen, a cooling module, a temperature control module, a protection relay and an alarm relay are connected to the microcomputer controller; a large-capacity zinc oxide valve plate, a discharging gap and the fuse are combined to limit overvoltage caused by disconnecting of the large motor as well as enabling the protector to be safely separated from the system when the protector is damaged by thermal breakdown, so as to avoid short circuit; the temperature control module is used for detecting the motor temperature and transmitting the temperature information to the microcomputer controller; the microcomputer controller judges whether to start a freezing module for cooling the motor according to the set temperature value. The special protector is applicable to a large-capacity motor system; the performances of a motor protector are improved to realize safe and reliable system running, clear measurement parameters, sensitive response and timely and reliable action.

Description

technical field [0001] The invention relates to the field of electrical technology, in particular to a special protector for large motors. Background technique [0002] When a large motor is switched off, the overvoltage generated has a high amplitude and large energy. However, due to the limitation of the manufacturing process, size and cost of ordinary overvoltage protectors, it is difficult to withstand the energy of the overvoltage and cause the protector to generate heat. Breakdown damage, and even cause a system short circuit accident. Contents of the invention [0003] The technical problem to be solved by the invention is to provide a special protector for large motors which is safe in use and stable in operation. [0004] The technical problem to be solved by the present invention adopts the following technical solutions to realize: [0005] A special protector for large motors, including a microcomputer controller, which is connected with a touch key input modu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/08
Inventor 朱友利
Owner 安徽金捷光电科技有限公司
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