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United junction box for electrical energy measuring

A combined junction box and electric energy metering technology, which is applied in the field of electric power systems, can solve problems such as non-one-to-one correspondence, error-prone wiring, and unreasonable setting of the voltage connecting piece and current connecting piece of the electric energy metering combined junction box.

Inactive Publication Date: 2015-12-30
STATE GRID TIANJIN ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Under normal circumstances, the settings of the voltage connection piece and the current connection piece of the electric energy metering combined junction box are unreasonable, and there is no one-to-one correspondence between the dropped wires from the electric energy meter to the wire hole of the junction box, and the voltage line and the current line form a cross, which is easy to be miswired

Method used

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  • United junction box for electrical energy measuring

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Embodiment Construction

[0011] The structure of the present invention will be described in detail below in conjunction with the drawings and embodiments.

[0012] Such as figure 1 As shown, a joint junction box for electric energy metering includes a junction box body and a junction board 30 arranged in the junction box body, and the junction board 30 is provided with U, V, W phase voltage and current junction blocks and a zero line junction block; The current connection blocks 10 of the U, V and W phases are arranged on both sides of the voltage connection block 20 . The voltage junction block 20 includes an upper 6, a lower lug 7 and a shorting lug 5 connecting them. The distance between the screw holes 2 and 3 for fixing the shorting piece 5 on the upper and lower lugs 6 and 7 of the voltage connection block 20 is equal to the distance between the screw holes 1 and 4 in the middle of the two current connection blocks 10 . In the running state, the shorting piece 5 is connected to the upper and l...

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Abstract

The invention discloses a united junction box for electrical energy measuring. The united junction box comprises a junction box body and a wiring board arranged in the junction box body, and the wiring board is provided with U-V-W phase voltage wiring blocks, U-V-W phase current wiring blocks and null line wiring blocks; every two U-V-W phase current wiring blocks are arranged at the two sides of the corresponding U-V-W phase voltage wiring block. According to the united junction box for electrical energy measuring, voltage connection straps are arranged between every two current connection straps and correspond to electric energy meters, wire intersection after wiring is completed is avoided, wires can be checked in a visualized mode, and an accident is prevented from occurring.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to an electric energy metering joint junction box. Background technique [0002] The combined junction box for electric energy measurement is widely used in the power industry. It can be used to connect meters or instruments to the secondary circuit in operation to complete the test or calibration of various projects. The main function of the joint junction box in the secondary circuit of the electric energy metering device is to connect the secondary line from the transformer to the terminal of the joint junction box in series and parallel, and then connect it to the terminal of the electric energy meter. [0003] Under normal circumstances, the settings of the voltage connecting piece and the current connecting piece of the combined electric energy metering junction box are unreasonable, and there is no one-to-one correspondence between the dropped wires from the electric en...

Claims

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Application Information

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IPC IPC(8): G01R1/04
Inventor 郑炳嘉
Owner STATE GRID TIANJIN ELECTRIC POWER
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