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A control device for controlling electrical switchgear

A technology for control devices and electrical switches, which is applied to power devices, electrical switches, electrical components and other directions inside the switch, can solve the problems of uncompact, heavy, and complicated devices, and achieve the effect of reducing costs.

Inactive Publication Date: 2011-11-02
ALSTOM TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although such schemes are widely used, they have deficiencies, for example, those caused by the combined or simultaneous use of motor and spring energy to perform the moving contact opening phase and the moving contact closing phase
[0006] In addition, such comprehensive designs of control devices generally require the opening and closing travel of the moving contacts to be longer than necessary, making the device more complex, bulky and less compact

Method used

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  • A control device for controlling electrical switchgear
  • A control device for controlling electrical switchgear
  • A control device for controlling electrical switchgear

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0098] When the finger 8b is located at P1, such as Figure 4a As shown, the actuating arm 8 itself is in the closed position, when it is parallel to the direction 6a. It can also be seen that the axis 38 of the actuating arm 8, the cable 26 and the mechanical spring 12 are aligned along the direction defined by the points P1 and P2. Therefore, the above-mentioned alignment is maintained during the entire opening phase of the moving contact performed by releasing the energy of the spring 12, so that the required speed can be achieved with the smallest possible spring force. in Figure 4a to 4d In the non-limiting preferred example shown, the wheel 28 has little effect during the opening phase because the two lengths of cable extending on either side remain substantially aligned. In another embodiment (not shown), for example, when the axis 38 of the spring 12 is not aligned with the direction defined by P1 and P2, the above alignment will only involve the actuating arm 8 and th...

no. 2 example

[0150] In a preferred embodiment, the Maltese cross wheel 80 has an integer number of grooves 82, which extend in the radial direction and are wide enough so that the transmission finger 83 can pass through it with minimal friction and preferably without any shaking. In the first embodiment, the transmission finger 83 gives a path related to the actuator arm connection point 8b. For the second embodiment, the transmission finger 83 is fixedly perpendicular to the cylindrical axis of the planetary gear 46 and a proper distance from the center 48 thereof. The path 84 of the transmission finger 83 near the Maltese cross wheel 80 has a convex shape, such as Figure 11a to 11c The dotted line is shown. The rotating shaft 81 and the diameter of the Maltese cross wheel 80 are designed such that the transmission finger 83 preferably penetrates into and out of the groove 82 along the tangential direction of the wall of the groove 82. In addition, the Maltese cross wheel 80 is connected...

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Abstract

The invention relates to a control device used for controlling electric switch. The control device comprises an actuating arm (8) provided with a connection point (8b) suitable for being moved along a closed line (L) including points P1, P2 and P3: in the phase where a moving contact is open, the connection point (8b) moves from P1 to P2 under the effect of a mechanical spring (12); in the recompression phase of a recompress spring (12), the connection point (8b) moves from P2 to P3 with the moving contact open under the effect of a working motor (10); and when the moving contact is close, the connection point (8b) moves from P3 to P1 under the effect of the working motor (10).

Description

technical field [0001] The invention relates to a control device for controlling an electrical switching device having moving contacts adapted to be placed in a closed position and an open position. Background technique [0002] The term "electrical switchgear" is used here to refer broadly to circuit breakers, disconnectors or indeed grounding devices. Circuit breakers that combine these different functions, such as combining the functions of a circuit breaker and a disconnector, are also included. [0003] It is known in the prior art that devices can be realized which are "integrated design" devices in which they combine an electric motor and a mechanical spring system for performing the closing and opening of the moving contacts of the switching device. Then, with an appropriate servo controller, the motor can be made to control various functions of the electrical switching device, such as opening and closing its contacts. [0004] Although such solutions are widely us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H3/26H01H3/38
CPCH01H3/3021H01H3/32H01H2003/3084H01H3/36H01H3/3015H01H3/3005H01H2003/3094H01H71/08
Inventor 沃尔夫冈·格里斯哈伯让-皮埃尔·迪普拉奥利维耶·格雷容阿兰·方热格扎维埃·阿莱尔米歇尔·科莱
Owner ALSTOM TECH LTD