Alternating-current analog quantity input plug of protection device for laboratory

Abstract

The invention relates to a protection device AC (alternating-current) analog quantity input plug for a laboratory, and the plug comprises a binder clip type support and a group of AC analog quantity input plugs, the binder clip type support comprises a support plate, two side clamping arms, and a clamping arm pressing ring, and the AC analog quantity input plugs are disposed on the two side clamping arms at intervals. Each of the alternating-current analog quantity input plugs is a Y-shaped plug, the Y-shaped plug is provided with a connecting hole position for clamping a metal terminal of aninput connector, and the Y-shaped plug is connected with a signal loop line. The alternating-current analog quantity input plug of the protection device for the laboratory is low in manufacturing material cost and convenient to operate, the contact is firmer through the cooperation of the binder clip type support and the Y-shaped plugs, and the overall efficiency of a network access detection testof the alternating-current analog quantity input plug protection device is improved.

Description

technical field [0001] The invention belongs to the technical field of AC analog input plug devices, and relates to a protection device for an AC analog input plug, in particular to an AC analog input plug for a protection device used in a laboratory. Background technique [0002] At present, before the protection device installed in the substation is installed on the local site, in order to verify whether the functions of the protection device meet the operation requirements of the power grid, it must go through the laboratory network inspection test. Usually, the protection devices installed in substations have many AC analog input signals, and the wiring of the signal circuit on the backplane of the device is complicated, which generally needs to be completed according to the standard wiring process. like figure 1 As shown, each loop wiring 1 has a loop pin 2. Insert the loop pin into the AC analog terminal block 3, and then fix the loop pin with fastening screws. The te...

AI Technical Summary

Problems solved by technology

[0003] In the laboratory, there is no on-site wiring process of the substation, and it is necessary to use special test lines and test pins to replace the on-site wiring methods, such as figure 1 As shown, the whole wiring process takes a long time, and due to the limited space of the terminal block, the test pins are often loose or connected to the wrong position, so that there are dangers such as short circuit and open circuit.

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