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Circuit breaker

A circuit breaking and disconnector technology, applied in circuit breaker testing, circuit, substation/switch layout details, etc., can solve problems such as electromagnetic coil burnout

Active Publication Date: 2012-05-23
KAWAMURA ELECTRIC INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, after the main circuit is disconnected, if you continue to press the test switch inadvertently, the electromagnetic coil may be burned

Method used

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Embodiment Construction

[0040] Next, an embodiment in which the circuit breaker of the present invention is realized will be described with reference to the drawings. figure 1 It is a perspective view showing the appearance of the circuit breaker. figure 2 It is a perspective view showing the internal mechanism of the circuit breaker when the main circuit is turned on by the operating handle. image 3 It is a side view showing the internal mechanism in the same ON state. Figure 4 It is a side view showing the inside of the separator in the same ON state. Figure 5 It is a perspective view showing the internal mechanism with the main circuit cut off by the operating handle. Image 6 It is a side view showing the internal mechanism in the same cut-off state. Figure 7 It is a side view showing the inside of the separator in the same cut state. Figure 8 (a) is an enlarged side view showing a part of the circuit breaker in a state where the test switch has disconnected the test circuit. Figure 8...

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PUM

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Abstract

The The invention provides circuit breaker, which can make the breaker housing small and thin. In the circuit breaker, a tripping loop acts and a separator rises to cut off the main circuit when a leakage detection circuit on the printing substrate detects the leakage of the main circuit. A detection circuit is arranged on the printing substrate to detect the tripping action by setting a suspected leakage state occurrence. A U-shaped detection switch for turning on / off the detection circuit is configurated to be crossed with the separator. When the separator moves to the direction of the cut-off main circuit, a projection of the separator forcibly releases the connection state of the detection switch in order to cut off and forbids the connection operation of the detection switch.

Description

technical field [0001] The present invention relates to circuit breakers provided, for example, in switchboards. Background technique [0002] Conventionally, there is known a circuit breaker that, when a leakage in a main circuit is detected, operates a disconnection mechanism to move a separator within a disconnector case, thereby disconnecting the main circuit. In addition, there is also known a circuit breaker provided with a test circuit for testing whether or not the breaking mechanism operates normally when an electric leakage occurs. Since the test circuit generally secures power from the load-side circuit of the circuit breaker, even if the test switch is turned on, a suspected leakage current flows through the test circuit and the main circuit is disconnected, and the circuit breaker is reversed. There may also be a suspected leakage current flowing in the test circuit. Therefore, after the main circuit is disconnected, if you continue to press the test switch in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H83/02G01R31/327
CPCH01H83/04H01H2217/046H02B1/056
Inventor 加藤裕明
Owner KAWAMURA ELECTRIC INC