Isolating device for relay protection secondary loop electrified terminal block

A technology for isolating devices and secondary circuits, which is applied in the direction of circuits, coupling devices, and parts of connecting devices. Risk, low cost, and the effect of avoiding large-scale power outages

Inactive Publication Date: 2015-09-30
STATE GRID TIANJIN ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The terminal mis-touch prevention device in the above-mentioned patent publication includes installation buckles arranged at both ends of the shielding structure for fixing the terminal mis-touch prevention device. Only when the installation buckles at both ends are fixed can the corresponding anti-mis-touch effect be achieved. However, not all ends of some terminal blocks can be fixed, and only one side can be fixed. In this case, the anti-mis-touch device Just can not carry out fixed use, therefore brought great inconvenience to the operator, and this device is comparatively cumbersome to use, that is to say that the existing device can no longer satisfy the use, and a new device is urgently needed

Method used

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  • Isolating device for relay protection secondary loop electrified terminal block
  • Isolating device for relay protection secondary loop electrified terminal block
  • Isolating device for relay protection secondary loop electrified terminal block

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Embodiment Construction

[0016] The present invention will be further described in detail below through the specific examples, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention with this.

[0017] The structures, connections and detection methods not described in detail in the present invention can be understood as common knowledge in the field.

[0018] An isolation device for the live terminal block of the relay protection secondary circuit, such as figure 1 with figure 2 As shown, the isolating device includes a wire clip 1, a rotating shaft 3, a rotating shaft connecting block 2 and a plastic baffle 4 with a prompt mark of "operating equipment" on the upper surface. One side of the clamp and the plastic baffle is respectively movable and hinged together, and the wire clamp and the plastic baffle can swing around the rotating shaft connection block.

[0019] The isolating device has simple structure, scientific design, ea...

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PUM

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Abstract

The invention relates to an isolating device for a relay protection secondary loop electrified terminal block. The isolating device comprises a lead clamp, a rotating shaft, a rotating shaft connecting block and a plastic retaining plate, two ends of the rotating shaft connecting block are movably hinged to one sides of the lead clamp and the plastic retaining plate respectively, and both the lead clamp and the plastic retaining plate can swing and rotate around the rotating shaft connecting block. The isolating device is simple in structure, scientific in design, easy to manufacture, low in cost and convenient to operate and use, and mistaken touching and misoperation of the electrified terminal block can be avoided effectively, so that safety risk during inspection of relay protection secondary equipment is lowered; the lead clamp can be fixedly mounted with a lead on one side of the terminal block, so that the isolating device is extremely convenient to fix, working efficiency is improved, using range of the isolating device is expanded, and the isolating device is suitable for popularization and use.

Description

technical field [0001] The invention belongs to the technical field of relay protection in electric power engineering, and relates to an operating rod, in particular to an isolation device for a live terminal row of a secondary circuit of relay protection. Background technique [0002] At present, the annual inspection of substations basically adopts the method of "half-surface" power outage at transformer intervals. During the "half-face" annual calibration of the substation relay protection secondary equipment, some of the busbar PT terminal blocks often run with power on in the low-frequency low-voltage protection screen and the segmental standby automatic switching protection screen, while the other part of the bus PT terminal block is powered off. Therefore, relay protection workers must work under the condition that part of the secondary AC circuit is not powered off. There are safety hazards such as accidental touch and misoperation of live terminal blocks, which may ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01R13/447H01R4/48
Inventor 郝春晓吴世哲郭永占张军
Owner STATE GRID TIANJIN ELECTRIC POWER
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