Novel integrated junction box for three-phase shunt electric energy meter

Abstract

The invention discloses a novel integrated junction box for a three-phase shunt electric energy meter. The novel integrated junction box comprises a voltage connection module, a current connection module, a neutral line connection module, a voltage fuse protection connection module, a 485 communication and uncapping connection module, a spare fuse, a spare connector, a current socket special for field calibration, and a junction box body, wherein the spare fuse is arranged at one end of the surface of the junction box body; the spare connector is arranged at the other end of the junction box body; the current socket special for field calibration is arranged in the middle of the surface of the junction box body; the voltage connection module is arranged inside the junction box body; and thecurrent connection module is arranged on one side of the voltage connection module. Voltage output and current short-circuit are interlocked, a sliding connecting piece is removed, complicated operations performed according to operating procedures are not needed, and the condition that open circuit of a current transformer and short circuit of a voltage transformer are caused by operation errorsis avoided, so that the whole operation and recovery process is safe, accurate, reliable and rapid.

Description

technical field [0001] The invention relates to a junction box for an electric energy meter, in particular to a new type integrated junction box for a three-phase split line electric energy meter. Background technique [0002] The joint junction box of the electric energy meter is one of the common and indispensable equipment in the metering device. The setting of the joint junction box enables us to replace the electric energy meter, perform on-site calibration of the electric energy meter and various Testing, etc., greatly facilitates our measurement management. In the current three-phase split-line electric energy meter junction box, a device called "electric energy meter joint junction box" is widely used. The junction box is mainly composed of multiple sets of complicated sliding connecting pieces. Through the combination logic of the sliding connecting piece, the functions of online verification and replacement of the three-phase split-line electric energy meter are ...

AI Technical Summary

Problems solved by technology

Therefore, there are a series of problems such as complicated wiring, strict operating procedures, long operating time, and easy operation errors.

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