CN203519814U - Multipurpose junction box for secondary voltage drop test line - Google Patents

Abstract

The utility model relates to a multi-purpose junction box for secondary voltage drop test line, which comprises a rectangular box body, a semi-spiral aviation plug fixed at the bottom of the box body, and three four-core connecting cables separated from the lead-out cables of the aviation plug in the box body , three bearings with the same structure are fixed inside the box, and three cable shafts with the same structure are fixed on the outside of the three bearings. The three cable shafts are respectively wound with four-core branch cables, and one end of the four-core branch cables is connected One end of the button switch, the other end of the button switch is connected to the four-core connecting cable, the other end of the four-core branch cable passes through the threading hole on the surface of the box, and the four core wires at the ends of the three four-core branch cables are respectively connected. Lock sheath plug, needle-shaped elastic sheath plug and special clip for sheath. The utility model performs safe plug-in wiring for different terminal rows in the on-site metering cabinet, and meets the requirements of the on-site live test.

Description

Secondary voltage drop test line multi-purpose junction box

technical field

The utility model belongs to the field test technology field of transformers, in particular to a multi-purpose junction box for a secondary voltage drop test line.

Background technique

The test of the secondary voltage drop is to test the secondary impedance value between the voltage transformer of the power supply voltage of the electric energy meter and the electric energy meter. The test method is the direct measurement method, that is, the test without power failure. There are higher requirements for the level of insulation, and there are also higher requirements for the insulation level of test lines and connectors. In the secondary voltage drop test, the secondary terminal blocks have different models and specifications. In order to better carry out field tests under the premise of ensuring safety, a junction box with different plugs is designed to solve the field wiring problem. It seems very necessary.

Contents of the invention

The purpose of the utility model is to provide a multi-purpose junction box for the secondary voltage drop test line aiming at the deficiencies of the prior art.

The utility model solves its technical problem and realizes by taking the following technical solutions:

A multi-purpose junction box for secondary pressure drop test line, including a rectangular box body, a semi-spiral aviation plug is fixed on the outside of the bottom plane of the box body, and the four-core lead-out cables in the box of the aviation plug are divided into three and four Core connection cables, three bearings with the same structure are fixed inside the box, three cable shafts with the same structure are fixed outside the three bearings, and four-core branch cables are wound on the three cable shafts, four-core One end of the branch cable is connected to one end of the button switch fixed in the middle of the bearing, the other end of the button switch is connected to the four-core connecting cable, the other end of the four-core branch cable passes through the threading hole on the surface of the box, three four-core branch cables The four core wires at the end are respectively connected with a lockable sheath plug, a needle-shaped elastic sheath plug and a special clip for the sheath.

Moreover, grooves for plugs are respectively formed beside the three four-core branch cables on the surface of the box body, and slot covers are twisted on the grooves.

Moreover, the button of the button switch fixed in the middle of the bearing is fixed on the outer surface of the box.

Moreover, the length of the three four-core branch cables is 1 meter.

Advantage and positive effect of the present utility model are

1. The utility model is able to perform safe plug-in wiring for different terminal blocks in the on-site metering cabinet to meet the safety requirements during the on-site live test.

2. The junction box is equipped with a safety key switch, which further ensures the safety of the test.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

The embodiments of the present utility model will be described in further detail below in conjunction with the accompanying drawings. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the present utility model.

A multi-purpose junction box for secondary voltage drop test line, as shown in Figure 1, includes a rectangular box body 1, a semi-spiral aviation plug 12 is fixed on the outside of the bottom plane of the box body, and the four-core lead-out cable in the aviation plug box 11 Three four-core connecting cables 10 are separated in the box, three bearings 6 are fixed inside the box, and three cable shafts 7 with the same structure are fixed on the outside of the three bearings, and the three cable shafts are respectively wound Four-core branching cable 5, one end of the four-core branching cable is connected to one end of the button switch 9 fixed in the middle of the bearing, the other end of the button switch is connected to the four-core connecting cable, and the other end of the four-core branching cable goes out of the box The threading holes on the surface, the four core wires at the ends of the three four-core branch cables are respectively connected to the lockable sheath plug 4, the needle-shaped elastic sheath plug 8 and the special clip 13 for the sheath.

In the specific implementation of the utility model, plug grooves 3 are formed on the side of the three four-core branch cables on the surface of the box body. In order to place plugs or special clips, the electricity is exposed outside the box body, and each group of plugs or special clips are not used. Just put it in the groove when it is done, and screw the groove cover 2 on the groove, form the further protection to plug or special clip.

In the specific implementation of the present utility model, the button fixed on the button switch in the middle of the bearing can be inside the box, and the control of the button can be to install the box door on the back of the box, and implement the button on the button after opening the box door. As for control, of course, the button can also be fixed on the outer surface of the box for direct control. When using one of the three four-core branch cables, press the corresponding button to power up this cable, and the other unused The cable is protected against power failure.

In the specific implementation of the utility model, the four-core branch cable wound on the cable shaft can be recovered by opening the box door, or a coil spring with one end fixed in the middle of the bearing and the other end fixed on the cable shaft can be used. The elastic swivel cable shaft retrieves the quad breakout cable.

In the specific implementation of the utility model, the length of the three four-core branch cables is 1 meter.

Claims (4)

1. the multiplex junction box of secondary voltage drop p-wire, it is characterized in that: comprise rectangular box, base plane outside at casing is fixed with semi-spiral shape aviation plug, in the casing of aviation plug, four-core extraction cable separates three four-core stube cables in casing, at described box house, be fixedly mounted with three bearings that structure is identical, three bearing outsides are fixedly mounted with three cable shafts that structure is identical, in three cable shafts, be wound around respectively four-core separated time cable, four-core separated time cable one end is fastened on one end of the pushbutton switch at bearing middle part, the other end of pushbutton switch is connected with four-core stube cable, the other end of four-core separated time cable passes the through wires hole of tank surface, article three, on four heart yearns of four-core separated time cable end, connect and can lock sheath plug respectively, aciculiform flexible sheath plug and sheath exclusive clamps.

2. the multiplex junction box of secondary voltage drop p-wire according to claim 1, is characterized in that: the side at three four-core separated time cables of tank surface is shaped with respectively plug groove, and on groove, twists tankage lid.

3. the multiplex junction box of secondary voltage drop p-wire according to claim 1, is characterized in that: described in be fixed on bearing middle part its button of pushbutton switch be packed on box outer surface.

4. the multiplex junction box of secondary voltage drop p-wire according to claim 1, is characterized in that: the length of described three four-core separated time cables is 1 meter.

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