400-volt combined terminal box component

A technology of combining junction boxes and components, applied in the parts, measuring devices, instruments and other directions of electrical measuring instruments, can solve the problems of error-prone wiring, cross-phase wiring, messy circuit layout, etc., to achieve clear and clear phases and easy operation. Quickly and achieve the effect of live work

Inactive Publication Date: 2018-06-29
SHANGHAI MUNICIPAL ELECTRIC POWER CO
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing technology mainly adopts the method of fastening the terminals with screws to connect the lead-out wires of a group of three low-voltage current transformers into the joint junction box, and lead out the three-phase voltage wiring, and then lead out the meter through the internal connection of the joint junction box. The terminal on the meter side, and the meter side is connected to the meter circuit separately by screw fastening wiring. In this installation method, the wiring polarity is easy to be wrong, the wiring layout is messy, the voltage wiring and the secondary current circuit cross-phase wiring, etc. problems, which lead to cumbersome installation of low-voltage current transformers, easy miswiring, and the inability to carry out live work

Method used

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  • 400-volt combined terminal box component

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Embodiment Construction

[0011] In order to better understand the technical solution of the present invention, it will be described in detail below through specific embodiments in conjunction with the accompanying drawings:

[0012] see figure 1 , a 400-volt combined junction box assembly of the present invention includes a combined junction box base 1 and a phase-splitting lead-out device.

[0013] The current transformers are installed in groups of three, so when connecting the lead wires of the current transformers to the meter, they should also be installed in groups of three. The lead-out lines of any current transformer are divided into P1 current-phase lead-out lines, P2 current-phase lead-out lines and voltage-phase lead-out lines. For these three phases, three P1 current-phase phase-splitting holes 11, three P2 current-phase phase-splitting holes 12, and three voltage-phase phase-splitting holes 13 are opened on the upper and lower sides of the joint junction box base 1, and one P1 The curr...

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Abstract

The invention discloses a 400-volt combined terminal box component. A split-phase lead-out device is connected with a current transformer and a meter, the current transformer and the meter are conducted in a combined terminal box base, and an outgoing line of the current transformer is clear in phase. Connection is realized through insertion of the split-phase lead-out device directly by an operator, and an operating process is simple, convenient and quick. When a current transformer connection part is connected with the current transformer and connected with the combined terminal box base byinsertion while a meter connector and the meter are in an unplugged state, extending portions, on the upper side of the combined terminal box base, of a P1 copper rod and a P2 copper rod are conductedthrough a short connection metal sheet, and accordingly secondary circuit interphase short connection of the current transformer is guaranteed, and electrified operation in connection of the currenttransformer and the meter is realized.

Description

technical field [0001] The invention relates to a 400-volt joint junction box assembly used in the field of electric power engineering. Background technique [0002] When the low-voltage current transformer is installed with the metering circuit, the external lead wires are divided into P1 phase current loop wiring, P2 phase current loop wiring and voltage loop wiring. For any one of a group of three low-voltage current transformers, its P1 phase The current loop wiring needs to form a loop with the P2 phase current loop wiring, and the voltage loop wiring also needs to be accurately connected to the meter according to the determined current phase. The existing technology mainly adopts the method of fastening the terminals with screws to connect the lead-out wires of a group of three low-voltage current transformers into the joint junction box, and lead out the three-phase voltage wiring, and then lead out the meter through the internal connection of the joint junction box. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R1/04
CPCG01R1/0416
Inventor 施勇潘晓波
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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