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Linkage for actuating the isolating switch knife to synchronize the isolating switch of the sbs with that of the rmu

A technology of isolating switch and linkage device, which is used in electrical switches, air switch parts, high-voltage/high-current switches, etc., and can solve the problems of changing fixed positions, increasing the size of coupling parts, and increasing energy requirements of driving mechanisms.

Active Publication Date: 2018-10-26
SCHNEIDER ELECTRIC IND SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This results in a large change in the fixing position and an increase in the size of the coupling coupling
This in turn changes the linkage angle and results in a considerable increase in the energy requirements of the drive mechanism

Method used

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  • Linkage for actuating the isolating switch knife to synchronize the isolating switch of the sbs with that of the rmu
  • Linkage for actuating the isolating switch knife to synchronize the isolating switch of the sbs with that of the rmu
  • Linkage for actuating the isolating switch knife to synchronize the isolating switch of the sbs with that of the rmu

Examples

Experimental program
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Embodiment Construction

[0025] Reference will now be made to the exemplary embodiments of the present invention as illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used to refer to the same or like parts.

[0026] Disclosed herein is a linkage design for integrating an SBS into an RMU's existing disconnector that meets the synchronicity requirements of the SBS-shunt breaking system incorporated in the disconnector.

[0027] This is accomplished by forming a four bar linkage with an additional offset linkage placed on the drive shaft. The drive linkage transfers the mechanism energy to the four bar linkage through a sliding pin joint pivoted directly to the offset linkage. The offset linkage adjusts the speed of the movable knife by guiding a pivot pin in a slot of the drive linkage. An optimized linkage design ensures the desired synchronicity between the disconnector and the SBS.

[0028] The drive mechanism operates the disconnector rotary shaft wit...

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Abstract

The present invention discloses a linkage for actuating a disconnector switch blade in order to integrate a Shunt Breaking System (SBS) in existing disconnector switch of Ring Main Unit (RMU) which fulfills synchronization requirement of the SBS with the disconnector switch. The linkage includes a plurality of follower links connected to an offset link disposed over a drive shaft, a drive link for transferring mechanism energy to the plurality of follower links through a sliding pin joint which is directly pivoted to the offset link for ensuring the synchronization within the disconnector switch and the SBS, wherein the linkage enlarges the stroke of the disconnector switch blade during switch open and switch closed operations and maintains the stroke same as the disconnector switch mechanism during switch earth operation. The offset link is fixed over the drive shaft at offset distance from centre of the drive shaft to provide enlarged stroke of the disconnector switch blade in switch closed and switch open operations.

Description

technical field [0001] The present invention generally relates to the design of a linkage (transmission mechanism) used as an actuation device for a disconnector knife. In particular, the present invention relates to the linkage device design for integrating the SBS into the existing isolating switch of the ring main unit (RMU), which satisfies the synchronization of the SBS-shunt breaking system (Shunt Breaking System) incorporated in the designated isolating switch sexual demands. Background technique [0002] The supply line of the electrical load to be controlled is usually provided with at least one switching device. Typically, switching devices include pairs of contacts for each phase that are movable relative to each other to switch a load. The actuation of the contacts can be performed in different ways. In particular, for some high power switching devices (typically used above 600A) eg used as line introducers for safety purposes, high electrodynamic strength is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H31/04
CPCH01H33/6661H01H3/42H01H3/46H01H2033/6667
Inventor 桑贾亚·D·戈高瓦莱
Owner SCHNEIDER ELECTRIC IND SAS
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