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Undervoltage tripping device for circuit breaker

A technology of undervoltage release and circuit breaker, which is applied in the direction of protection switch operation/release mechanism, etc., which can solve the problems of small starting force, high heat generation of undervoltage release, unstable operation, etc., and achieve large starting force , simple structure and stable operation

Inactive Publication Date: 2013-03-27
WUXI ZIZO ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above-mentioned technical problems, the object of the present invention is to provide an undervoltage release for a circuit breaker, which solves the problems of high heat generation of the undervoltage release, small starting force and unstable operation in complex environments, and Simple structure, easy to control

Method used

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  • Undervoltage tripping device for circuit breaker
  • Undervoltage tripping device for circuit breaker
  • Undervoltage tripping device for circuit breaker

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Embodiment Construction

[0016] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] Please refer to figure 1 as shown, figure 1 The structural diagram of the undervoltage release for the circuit breaker provided by the embodiment of the present invention.

[0018] The undervoltage release for the circuit breaker in this embodiment includes a working power supply 1 , a voltage signal sampling circuit 2 , a signal processor 3 and an electromagnetic actuator 4 .

[0019] The working power supply 1 is connected to the voltage signal sampling circuit 2 , the signal processor 3 , and the electromagnetic actuator 4 , and is used to supply power to the voltage signal sampling circuit 2 , the signal processor 3 , and the electromagnetic actuator 4 .

[0020] In order to reduce energy consumption and expand the working voltage range, the wo...

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Abstract

The invention discloses an undervoltage tripping device for a circuit breaker. The undervoltage tripping device for the circuit breaker comprises a working power supply, a voltage signal sampling circuit, a signal processor and an electromagnetic execution mechanism, the working power supply is connected with the voltage signal sampling circuit, the signal processor and the electromagnetic execution mechanism and used for providing power for the voltage signal sampling circuit, the signal processor and the electromagnetic execution mechanism, the voltage signal sampling circuit is connected with a protected power supply and acquires a voltage signal of the protected power supply, the signal processor is connected with the voltage signal sampling circuit and controls the action of an electromagnetic coil in the electromagnetic execution mechanism, and the electromagnetic execution mechanism is connected with the signal processor and controls the tripping operation of the circuit breaker through the action of the electromagnetic coil. The undervoltage tripping device for the circuit breaker has the advantages of being low in heat, high in start-up force, stable in operation in a complex environment, simple in structure and easy to control.

Description

technical field [0001] The invention relates to the technical field of circuit breakers, in particular to an undervoltage release for circuit breakers. Background technique [0002] The undervoltage release is one of the commonly used accessories of circuit breakers, and it is an important device to protect the load electrical equipment from being damaged due to low voltage. Undervoltage releases are roughly divided into two categories, electromagnetic undervoltage releases and permanent magnet voltage releases. However, the circuit of the permanent magnet undervoltage release is complex, and the ejector pin cannot be automatically reset after power failure, which is inconvenient to use. However, the relay coil and electromagnetic coil of the traditional electromagnetic undervoltage release tend to have a large current when they are turned on, generate a lot of heat, and have a small starting force, which makes them unstable in complex environments. Contents of the invent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/24
Inventor 吴振锋王建忠戈浩
Owner WUXI ZIZO ELECTRIC
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