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Electronic tripping device with function of monitoring tripping power source

An electronic release and power monitoring technology, which is applied in the direction of emergency power protection, electrical components, circuit devices, etc., can solve the problems of unreliable and fast protection, and achieve the effects of reliable tripping, shortening time, and reducing risks

Active Publication Date: 2012-03-14
SHANGHAI NOARK ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention solves the problem that the existing electronic tripper cannot perform fast protection and is unreliable when the tripping energy is insufficient, and provides a fast-protection and reliable electronic tripper with tripping power monitoring

Method used

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  • Electronic tripping device with function of monitoring tripping power source
  • Electronic tripping device with function of monitoring tripping power source
  • Electronic tripping device with function of monitoring tripping power source

Examples

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Embodiment Construction

[0026] See Figure 4 , An electronic trip unit with trip power monitoring, including a current transformer 6 connected to the circuit breaker, the current transformer 6 is connected to the rectifier circuit 7 and the power supply circuit 11 for power supply in turn, the power circuit 11 and The electronic processing unit 2 and the operating mechanism 12 are connected. The electronic processing unit 2 is connected to the current sensing and measuring device 1 for detecting fault current. A judgment unit 10 is provided between the power supply circuit 11 and the operating mechanism 12. The unit 10 is connected to the electronic processing unit 2;

[0027] The judgment unit 10 is used for judging whether the trip power supply is ready according to the received voltage across the energy storage capacitor C provided by the power supply circuit 11 and the reference voltage provided by the electronic processing unit 2, and when the trip power supply is ready In combination with the rece...

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Abstract

The invention provides an electronic tripping device with the function of monitoring a tripping power source, which comprises a current transformer connected with a circuit interrupter, wherein a rectification circuit and a power circuit for power supply are sequentially connected with the current transformer, the power circuit is connected with an electronic processing unit and an operating mechanism, the electronic processing unit is connected with a current sensing and measuring device for detecting fault current, a judging unit is arranged between the power circuit and the operating mechanism, and the judging unit is connected with the electronic processing unit; and the judging unit is used for judging whether the tripping power source is ready according to the voltage at two ends of an energy-storage capacitor provided by the power circuit and the reference voltage provided by the electronic processing unit, and transmitting a tripping signal to the operating mechanism in cooperation with a received tripping order of the electric processing unit under the condition that the tripping power source is prepared. The electronic tripping device has the beneficial effects that the device is more reliable in tripping, and the time required for quickly protecting the electronic tripping device can be shortened.

Description

technical field [0001] The invention relates to an electronic tripper with tripping power monitoring. technical background [0002] Known electronic trip units, such as figure 1 , figure 2 As shown, it includes a current transformer 1' connected to a circuit breaker 2', and the current transformer 1' is sequentially connected with a rectifier circuit 3' and a power supply circuit 4' for power supply. The power circuit 4' is connected to the electronic The processing unit 6' is connected to the operating mechanism 7', the operating mechanism 7' is connected to the electronic processing unit 6' that issues the trip command, and the electronic processing unit 6' is connected to the current sensing and measuring device 5' that detects the fault current connect. When the electronic tripper performs a tripping action, it disconnects the circuit breaker 1' through the mechanism 8'. The tripping coil in the operating mechanism 7' that performs the tripping action relies on the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/28H02H1/06
Inventor 胡应龙刘彬苏忠贤
Owner SHANGHAI NOARK ELECTRIC
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