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Interlock apparatus of ground switch for vacuum circuit breaker

A technology of vacuum circuit breaker and grounding switch, applied in the direction of grounding device, grounding switch, switchgear, etc. of switchgear, which can solve problems such as damage and grounding fault

Active Publication Date: 2011-06-29
LSIS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If power is applied to the circuit when the circuit breaker is turned on in a state where the circuit on the secondary side (load side) is grounded, it may cause a ground fault, causing great damage

Method used

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  • Interlock apparatus of ground switch for vacuum circuit breaker
  • Interlock apparatus of ground switch for vacuum circuit breaker
  • Interlock apparatus of ground switch for vacuum circuit breaker

Examples

Experimental program
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Embodiment Construction

[0019] combined with Figure 1 to Figure 5 , Through the following description of preferred embodiments of the present invention, the purpose of the present invention, as well as the construction and working effects of the present invention for achieving the above purpose will be clearly understood.

[0020] The grounding switch interlocking device of a vacuum circuit breaker according to a preferred embodiment of the present invention includes a drive shaft 20, a movable plate 40, a first interlocking plate 50, and a second interlocking plate 60, such as Figure 1 to Figure 3 shown.

[0021] In addition, the grounding switch interlocking device of the vacuum circuit breaker according to the preferred embodiment of the present invention may further include interlocking operating mechanisms 91, 92, 93, 94, 95, 96, such as Figure 4 and Figure 5 shown.

[0022] First, refer to Figure 4 and Figure 5 , the construction of the grounding switch transmission mechanism and the...

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PUM

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Abstract

Provided herein is an interlock apparatus for preventing the drawing-in or drawing-out of a vacuum circuit breaker main body in interlock with the ground operation of a ground switch in a vacuum circuit breaker, and the ground switch interlock apparatus of the vacuum circuit breaker comprising: a drive spindle for drawing in or out a main body of the vacuum circuit breaker; a movable plate provided with a connection hole of a manipulation handle for rotating the drive spindle to be moved to a manipulation handle connection allowance position for allowing the manipulation handle to be connected to the drive spindle or a manipulation handle connection prohibition position for prohibiting the manipulation handle to be connected to the drive spindle; a first interlock plate connected to the movable plate to be movable to move the movable plate to the manipulation handle connection allowance position or the manipulation handle connection prohibition position; and a second interlock plate to be moved to a lock position for locking the first interlock plate at the manipulation handle connection prohibition position when the ground switch is at a ground position, and to a releasing position for releasing the first interlock plate when the ground switch is not at the ground position.

Description

technical field [0001] The present invention relates to a vacuum circuit breaker, and more particularly, to an interlock device for preventing (prohibiting) a main body of a vacuum circuit breaker from being drawn or pushed in when a grounding switch of the vacuum circuit breaker is in a grounded position. Background technique [0002] Typically, a vacuum circuit breaker is a circuit breaker installed in a switchgear (that is, also known as a power distribution board) that connects the primary side (power receiving side) circuit and the secondary side (power distribution side) circuit. power equipment, allowing normal current conduction to supply power to load-side equipment at normal times. Also, a vacuum circuit breaker is a power device for breaking a circuit to protect transmission lines and load devices when a fault current such as a short circuit occurs, and for handling high voltage of several thousand volts or more or extra high voltage of tens of thousands of volts ...

Claims

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Application Information

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IPC IPC(8): H01H33/66H01H9/26
CPCH01H31/06H01H9/22H02B11/133H01H31/003H01H33/52H01H33/6661H02B11/28H01H33/666
Inventor 金大性金根義
Owner LSIS CO LTD
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