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Breaker with short-time duty undervoltage release

An undervoltage release and short-time working technology, which is applied in the direction of protection against undervoltage or no voltage, to achieve the effect of prolonging the service life

Pending Publication Date: 2018-04-13
DELIXI ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the power-on time of the shunt coil is reduced to a certain extent, it is only limited to the power-off when the circuit breaker is triggered. When the circuit maintains normal operation, the shunt coil is still in the power-on state, and the overall power-off time is not long

Method used

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  • Breaker with short-time duty undervoltage release

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0018] Such as figure 1 As shown, a circuit breaker with a short-time duty undervoltage release includes an undervoltage release and a controller 101 connected to each other, and the controller 101 is used to detect an undervoltage signal and control the undervoltage release The circuit breaker has a shunt coil L1, the normally open contact of the shunt coil L1 is connected to the undervoltage release, the signal output terminal of the controller 101 is connected to the relay through the triode, and the contact switch J1 of the relay is connected in series to the branch In the power circuit of excitation coil L1.

[0019] Utilize the undervoltage detection function on the controller 101 to detect the voltage situation, the working principle is as follows:

[0020] 1. When abnormal voltage is detected, the controller 101 outputs a signal to turn on the power supply of the shunt coil L1 to drive the coil to pull in so as to trip the circuit breaker.

[0021] 2. When the detect...

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PUM

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Abstract

The present invention relates to a breaker with a short-time duty undervoltage release. The breaker comprises an undervoltage release and a controller which are connected to each other; the controlleris configured to detect undervoltage signals and motions of the undervoltage release; and the breaker is provided with a shunt excitation coil. The breaker is characterized in that: a contact of theshunt excitation coil is connected with the undervoltage release, and a power supply of the shunt excitation coil is connected with a signal output end of the controller. Compared to the prior art, the shunt excitation coil of the breaker is employed, the contact of the shunt excitation coil is connected with the undervoltage release, the power supply of the shunt excitation coil is connected withthe signal output end of the controller, the controller controls the motions of the undervoltage release, an undervoltage coil is not needed, and therefore, the undervoltage release cannot need to beelectrified for a long time and is only electrified when undervoltage happens, and the service life is prolonged.

Description

technical field [0001] The invention relates to a circuit breaker, in particular to a circuit breaker with a short-time duty undervoltage release. Background technique [0002] The undervoltage release is one of the key components of the intelligent circuit breaker. Since the existing undervoltage release needs to be energized for a long time, the production process requirements for the release are relatively high. After these years, such a production process has reached a certain bottleneck, and it is difficult to improve the existing quality. However, the undervoltage release is a key component of the smart circuit breaker. If it burns out or is unreliable, it will cause the switch to fail to close. It is difficult to break through under the existing iron core technology and cost. [0003] The utility model patent with the notification number CN 205622193 U discloses a shunt coil protection structure, including a circuit breaker, a shunt coil, and a circuit breaker auxili...

Claims

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Application Information

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IPC IPC(8): H02H3/24
CPCH02H3/24
Inventor 周焰华张立军
Owner DELIXI ELECTRIC