Test terminal pin

Abstract

The invention discloses a test terminal needle. The test terminal needle comprises two symmetrical needle bodies; the two needle bodies are in rotatable connection through a hinge pin; each needle body comprises a hook type shell, a metal needle and an insulation lifting cap; a plugging opening used for connecting a conventional test line is formed in each insulation lifting cap; each metal needle vertically passes through the lower end of a shell body at the upper part of the corresponding hook type shell and extends out from a corresponding spring; the hook type shell includes upper arms and lower arms; each upper arm is of a horizontal L-shaped structure; each lower arm is of a vertical L-shaped structure; the upper arms and the lower arms are combined to form a U-shaped structure; the vertical ends of the lower arms can move up and down along the vertical ends of the upper arms; slide grooves are formed at the tops of the upper arms; fastening screws are installed in the slide grooves; connection gaskets are arranged between the fastening screws and the metal needles; and the top end of each spring is fixedly connected with a corresponding connection gasket so as to form an integrated body. With the test terminal needle of the invention adopted, fast and safe connection of test lines and measured voltage terminals in relay protection operation can be realized. The test terminal needle has the advantages of safe and convenient use and wide use.

Description

technical field [0001] The invention relates to the field of power relay protection and debugging application equipment, in particular to a test terminal needle used in the test process of an operation circuit and a voltage circuit. Background technique [0002] During the debugging and testing of relay protection, especially during the testing of the operating circuit and the voltage circuit, it is necessary to install test instrument wiring on the connected terminals. For the commonly used current loop, the end of the test wire can be directly inserted into the current terminal; for the voltage terminal, because there is no effective way to connect, it is generally necessary to remove part of the wiring, open the terminal, and then use the test wire to connect with the 1.5mm terminal pin After being merged into the terminal, the whole wiring process is complicated and dangerous. [0003] In order to solve the problem of safe and stable connection between the test line and...

AI Technical Summary

Problems solved by technology

However, there are still shortcomings. First, the voltage terminal includes two terminals, positive and negative. The experimental terminal needle designed by this scheme can only connect a single test line to the voltage terminal at a time, and the two terminals need to be operated twice respectively. The test process is cumbersome and the work efficiency is low; the second is that the experimental terminal needle and the voltage port seat in this scheme are connected by hooks, and the upper and lower snapping positions of the hooks are inconvenient to adjust, and cannot be flexibly applied according to different voltage port seats

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