JPH0526886Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a bypass tool with an energization display, which is equipped with a device that detects and displays the energization state of the bypass wire, and has connectors for connecting wires at both ends of the bypass wire. be.

When repairing cut-out switches and underline wires near pole-mounted transformers, bypass wires are connected to both ends of the electrical wires at the repair point during construction to avoid power outages, but this connection must be made securely. Therefore, it is preferable to provide a means for checking the energization state of the bypass line.

However, in this case, if the energization state of the bypass line is confirmed simply by voltage detection, the voltage around the high-voltage line or the like will also be detected, making it impossible to confirm the accurate energization state of the bypass line. Therefore, this invention aims to take measures against this problem by appropriately attaching a current transformer to the outer circumference of the bypass wire, thereby providing a bypass tool with an energization indicator that can accurately check the energization state of the bypass wire. It is something to do.

An embodiment of this invention will be described below with reference to the drawings. As is clear from FIG. 1, this embodiment consists of gripping members A and B of the same shape and size.
Specifically, a tightening member 3 having a screw thread 2 fixed to one end of the grip 1 can be freely threaded through an arm portion 4a of a connector receiving portion 4 having a substantially hook-shaped longitudinal section. A connector protrusion 5 with a generally C-shaped cross section and a wide width is attached to the connector protrusion 5, which is rotatable with respect to the connector protrusion.

Note that the grip 1 and the arm portion 4a of the connector receiving portion 4
An annular spring 6 is fitted around the outer periphery of the tightening member 3 between the two for smooth screwing of the tightening member 3.

The aforementioned connector protrusion 5 has a needle-like protrusion 5b on its curved surface 5a, and its lower surface 5c is almost in contact with the inner upper surface 4b of the connector receiving portion 4, and the grip 1 can be rotated to tighten the tightening member. 3 into the arm part 4a of the connector receiving part 4, the connector protrusion 5 does not rotate but slides as it is and approaches the socket 4c of the connector receiving part 4. A suitable insulating cover 7 is connected to the connector receiving part 4, and the connector receiving part 4 and the bypass wire 8 are connected inside this, and a stress cone 9 is connected to the insulating cover 7 side of the bypass wire 8. covered. The other end of the bypass line 8 is connected to a plug-in connector 10 as shown.

On the other hand, the gripping member B has the same shape and size as the gripping member A, and has a current transformer CT built into the insulating cover 7', which covers the core wire of the bypass wire 8'. In response to this detection, the display device LCD 11 provided on the back surface of the connector receiving portion 4' displays an image. Note that 1' is a grip, 9' is a stress cone, and the other members have the same structure and composition as those of the gripping member A. Also, the bypass line 8'
is connected to the plug-in connector 10.

The bypass tool with energization display having the above structure has a cut-out switch 21 as shown in FIG.
Place the electric wires 21a and 21b going in and out of the connectors 4 and 4' in the connector receptacles 4 and 4' of the grip members A and B, respectively, and tighten them by turning the respective grips 1 and 1'. ' is the connector receiving part 4,
4' and pinch each electric wire 21a, 21b to make a connection. At this time, since the needle-like protrusion 5b is provided at the tip of the connector protrusion 5, the electrical connection can be reliably achieved by penetrating the sheath of the electric wire.

In this way, a short-circuit line is constructed between the transformer 22 and the drop-in line 23 by the bypass wires 8, 8', but at this time, the current transformer built in the insulating cover 7' is connected to the actual current flowing to the bypass lines 8, 8'. Since the current is immediately detected and sent to the display 11 to display the energization state, the actual energization state of the bypass line can be visually confirmed.

Therefore, the bypass line reliably constitutes a short circuit line, and it is possible to very easily and clearly confirm whether it is functioning or not, which is very convenient. Moreover, since the detection is performed using the current flowing through the bypass line, it is not affected even if it is near a high voltage line, making it reliable.

In the above embodiment, the plug-in connector 10
is interposed between the bypass wires 8, 8', so that a short-circuit wire of a desired length can be easily obtained by separately preparing a bypass wire having another plug-in connector as necessary. Further, other current transformers do not need to be built into the insulating cover 7' as in the above embodiment, and may of course be installed or installed as appropriate, for example, inside the stress cone 9 or in the middle of the bypass wires 8, 8'. It is.

FIG. 3 shows a case where the bypass tool with energization indicator according to this invention is interposed between the high voltage distribution line 31 and the lead wire 33 that enters the transformer 32, and in this case, the pull-down wire 34 and cutout switch 35 Therefore, a short circuit line can be easily constructed between the high voltage distribution line 31 and the transformer 32.

[Brief explanation of drawings]

Each figure is a diagram of an embodiment, and FIG. 1 is a perspective view, FIG. 2 is an explanatory diagram showing a usage situation, and FIG. 3 is an explanatory diagram showing another usage situation. In the figure, 1 and 1' are grips, 3 and 3' are tightening members, and 4 and 4' are connector receiving parts, respectively.
5 is a connector protrusion, 7 and 7' are insulating covers, respectively.
8 and 8' are bypass lines, respectively.

Claims (1)

[Scope of utility model registration request] In a bypass tool in which connectors for connecting electric wires are connected to both ends of a bypass line, a current transformer is provided on the outer periphery of the bypass line at appropriate locations, and a device is provided to indicate energization by the current transformer, and furthermore, the above-mentioned electric wire connection A bypass tool with an energization indicator that features a needle-like protrusion on the contact surface with the electric wire.