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Switchgear

A switchgear, disconnecting position technology, applied in switchgear, pull-out switchgear, grounding device of switchgear, etc., can solve problems such as inability to ensure safety

Inactive Publication Date: 2012-06-20
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there is also a problem that safety cannot be ensured due to operator misoperation such as forgetting to pull out the operating handle.

Method used

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  • Switchgear
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0022] figure 1 It is a block diagram which shows the switchgear concerning Embodiment 1 of this invention, (a) is a front view, (b) is a side cross-sectional view. in addition, figure 2 and figure 1 Corresponding to (b), it is a partial side sectional view when the circuit breaker is in the off position.

[0023] first according to figure 1 Describe the overall structure of the switchgear. The whole metal-enclosed switchgear 1 is covered by a metal casing 2. As shown in figure (a), the front side is provided with an upper door 3, a middle door 4, and a lower door 5 that can be opened and closed by hinges.

[0024] The inside of the housing 2 is divided into several compartments, the inner side of the upper door 3 is the control room 6, the inner side of the middle door 4 is the circuit breaker room 7, and the inner side of the lower door 5 is from the lower part of the circuit breaker room 7 to the housing 2 The back side of the circuit breaker room 7 is the cable ro...

Embodiment approach 2

[0047] Figure 7 It is a top cross-sectional view of main parts of the switchgear according to Embodiment 2, and is of Embodiment 1. image 3 or Figure 4 The enlarged view of the front right corner of , showing the ES operating spindle 22 part located at the lower right of the extraction device 10 . Figure 8 is along Figure 7 The sectional view cut by the C-C line; Figure 9 is along Figure 7 The sectional view cut by the D-D line; Figure 10 and Figure 11 is along Figure 7 A cross-sectional view cut along line E-E. Since the overall structure of the switchgear is different from that of Embodiment 1 figure 1 The same, so the description is omitted. In addition, the drawer, the ES operating mechanism, and the interlocking of both are also the same as those in Embodiment 1, and the same symbols are attached to the same parts. The invention of this embodiment is based on the configuration of the first embodiment and further adds an interlock function described be...

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PUM

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Abstract

A switchgear having an interlock function for blocking movement of a circuit breaker to the connecting position side when an earth switch is in a closed state at the disconnect position of the circuit breaker. When the circuit breaker (11) is at the disconnect position, an ES interlock cam (37) fixed to an ES operation spindle (22) is rotated by an operation for closing the earth switch (ES) by rotating the ES operation spindle (22). An ES interlock lever (36) interlocked with that rotary operation is thereby driven and rotated to press and move a draw-out device interlock frame (32), and itsdistal end engages with a protrusion (31) provided on the moving shaft (25) of the draw-out device, thus blocking rotation of the moving shaft (25).

Description

technical field [0001] The invention relates to a switchgear with a built-in lead-out circuit breaker, in particular to an interlocking structure of a circuit breaker and a grounding switch. Background technique [0002] As the interlocking structure of the conventional switchgear, for example, there is disclosed a structure as follows: In the switchgear including the drawer type circuit breaker and the grounding switch, the interlocking mechanism of the main circuit device and the door is provided, and only the inside of the circuit breaker room is not charged. Time will open the door. According to this, the door will only be opened when the circuit breaker is drawn forward and is in the disconnected position. Only in this state, the grounding switch interlock plate arranged in front of the drive shaft of the grounding switch can be opened to insert the operating handle. The grounding switch can be turned on and off. In addition, when the circuit breaker is in the off pos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02B11/133H02B1/16H02B11/00H02B11/127
CPCH02B11/133H02B11/28
Inventor 佐野幸治小林弘嗣小鹤进
Owner MITSUBISHI ELECTRIC CORP