Electric energy metering joint wiring terminal strip

Abstract

The invention provides an electric energy metering joint wiring terminal strip, which comprises a plurality of current wiring areas and a voltage wiring area, wherein the current wiring area comprisesthree current connecting sheets, a plurality of current input terminals and a current output terminal; the current wiring area is provided with three first through cavities; the current connecting sheets are arranged in the first cavity and are mutually insulated; one end, close to a phase line, of the current connecting sheet is provided with the current input terminal; one end, close to an analog input merging unit, of the current connecting sheet is provided with the current output terminal; the current input terminal and the current output terminal are electrically connected with the corresponding current connecting sheet; the current wiring area is also provided with a jumping wire device; the jumping wire device is electrically connected with the two current connecting sheets respectively; and the jumping wire device can selectively electrically connect or disconnect the two current connecting sheets. Through the jumping wire device and a polygon jack, wiring of a merging unit field tester is convenient and reliable.

Description

technical field [0001] The invention relates to the field of substation electric energy metering, in particular to an electric energy metering joint terminal block. Background technique [0002] The electric energy metering joint terminal block is installed in the secondary circuit of the electric energy metering device of the local control cabinet of the analog input merging unit (hereinafter referred to as the merging unit) of the substation, and connects the secondary line led by the transformer to the analog input A connecting device of the merging unit, generally in the shape of a cuboid, mainly green or black. The combined terminal block for electric energy measurement connects the secondary lines of transformers in series and parallel, and connects devices such as voltage transformers, circuit transformers and analog input merging units, so as to facilitate the connection of the secondary circuits of current and voltage transformers under live conditions. The field t...

AI Technical Summary

Problems solved by technology

[0003] The existing joint junction box for electric energy measurement has the following problems: (1) The test line access port is not designed, and when the on-site error detection of the analog input merging unit is performed, the voltage and current signal lines need to pass through the crocodile clip or the fastening screw Fixed on the junction box, the former is prone to slipping under force, while the latter is complicated to operate, which affects the work efficiency of the field test and increases safety hazards; (2) the existing junction box is too large to be installed in the densely arranged on-site control cabinet Install and use in

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