Relay protection test line
A relay protection test and wire body technology, applied in the parts, circuits, electrical components of electrical measuring instruments, etc., can solve the problems of inaccuracy, easy loosening of test wire connection joints, test data, etc., so as to reduce interference and ensure connection. perfect effect
Pending Publication Date: 2017-04-19
LISHUI POWER SUPPLY COMPANY OF STATE GRID ZHEJIANG ELECTRIC POWER +2
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- Abstract
- Description
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- Application Information
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Problems solved by technology
[0007] The purpose of the present invention is to provide a relay protection test line, which can effectively solve the problem of inaccurate test data caused by the easy looseness of the test line connection joint during the existing relay protection test
Method used
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Embodiment Construction
[0017] refer to figure 1 It is an embodiment of a relay protection test line of the present invention, a relay protection test line, comprising a line body 1 and wiring plugs arranged at both ends of the line body 1, and the wiring plug includes a metal joint 2 and an externally threaded Connector 3, the tail end of the metal connector 2 is connected to the wire body 1, the connector 3 is provided with a through hole 4 along the axis, the connector 3 is set on the metal connector 2, the metal connector at the rear of the connector 3 2 upper cover is provided with insulating cover 9. The internal thread can be added to the connection hole of the test line of the relay protection instrument, and the stable connection between the test line and the relay protection instrument can be ensured through threaded connection.
[0018] Such as figure 2 As shown, in order to further ensure that the test line is not loose during the test, a ratchet 5 and a pawl 6 are also provided betwee...
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The invention discloses a relay protection test line. The relay protection test line comprises a line body and wiring plugs arranged on both ends of the line body. Each wiring plug comprises a metal joint and a connector with an external thread. The tail end of each metal joint is connected with the line body. The connector is provided with a through hole along the axis. Each connector sleeves a metal joint, and a ratchet and a pawl are arranged between the connector and the metal joint. Each pawl is fixed on the inner wall of a through hole. Each ratchet slidably sleeves a metal joint. Each ratchet is connected with a connection rod which controls the ratchet to slide on a metal joint. The relay protection test line provided by the invention has the advantages that the ratchet and the pawl are supported between each connector and each metal joint to prevent loosening after the connector is screwed into a test device; the test line and the test device are well connected; interference in a test process is reduced; each connection rod drives a ratchet to slide on a metal joint; separation and combination of each ratchet and each pawl are controlled; and the connection state of each connector is easily locked.
Description
technical field [0001] The invention relates to a relay protection test line. Background technique [0002] In the relay protection test, the test wires with metal plugs at both ends and the frame are used for connection and crossover. Due to the limitation of equipment wiring and terminal layout, it is often necessary to remove the voltage terminal wiring, and then use the test wires on the relay protection instrument with Alligator clips clamp the line under test. This method is likely to cause a short circuit due to the dense wiring of the terminal block, which brings safety hazards to equipment and experimenters, or inaccurate measurement results due to weak wiring contacts. details as follows: [0003] When disconnecting wires during work, due to the small space of the terminal block unit, the wiring personnel may accidentally touch the secondary circuit of the adjacent unit, resulting in abnormal protection or malfunction. [0004] Disconnecting wiring by mistake ma...
Claims
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Login to View More IPC IPC(8): G01R1/04H01R13/207
CPCH01R13/207G01R1/0416
Inventor 覃庆欢叶巨伟黄强徐巧陈伟伟翁军美李淑芳邱雨张双嘉许望
Owner LISHUI POWER SUPPLY COMPANY OF STATE GRID ZHEJIANG ELECTRIC POWER