JPH0448541Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field of the Invention) The present invention relates to a cable frame test termination.

(Technical background of the invention) For example, when performing frame tests on 275kV class OF cables, high voltage CV cables, etc., capacitor cones are attached to both ends of the cable to form the termination section, and various electrical tests are performed. In order to do this, a voltage is applied to the conductor pull-out rod at the terminal end connected to the cable conductor.

FIG. 2 shows a conventional cable frame test termination. That is, the cable to be measured 2 is wound around the cable drum 1 in multiple stages, and a termination portion 3 is formed at each end of the cable.
This terminal end 3 includes a capacitor cone for testing, and the capacitor cone is covered with an insulator 4 filled with insulating oil to ensure that it is immersed in oil. Then, a frame test was performed by applying a voltage to the conductor pull-out rod 2A connected to the cable conductor and protruding from the insulator 4.

(Problems with Background Art) Incidentally, the insulator 4 constituting the terminal end portion 3 is usually formed to have a length of 2 to 3 m and has a large weight. For this reason, conventionally the insulator 4 was
The cable 2 was supported vertically above and the end of the cable 2 was introduced into the insulator 4 from below the pedestal 5. However, when the insulator 4 is used in this way, the work to support it on the pedestal 5 is very troublesome because of its large weight, and moreover, the support work takes a lot of time. Furthermore, when using the pedestal 5, the cost increases accordingly and is uneconomical. Furthermore,
If the cable is introduced into the insulator 4 from below the pedestal 5, the length of the cable required from the drum 1 to the terminal end 3 (excess length for work) becomes large.

(Purpose of the invention) The purpose of the invention is to provide a cable frame test termination that does not require a frame, can be easily assembled, and requires only a small working length.

(Summary of the invention) The invention is characterized in that a capacitor cone attached to at least one end of a cable is disposed within an insulated pipe containing insulating oil, and the insulated pipe is supported diagonally.

(Embodiments of the invention) Hereinafter, embodiments of the invention will be described in detail with reference to the drawings.

FIG. 1 shows a cable frame testing termination section 6 of the present invention, in which a cable under test 2 is wound around a cable drum 1.

The terminal ends 6,6 have capacitor cones 7,7 attached to both ends of the cable 2 to be measured. These condenser cones 7, 7 are housed within pipes 8, 8 made of polyvinyl chloride (PVC). Inside these pipes 8, 8, insulating oil 9, 9 is used to immerse the condenser cones 7, 7 in oil.
is included. The upper ends of the pipes 8, 8 are supported by both ends of a hemp rope 10 wrapped once or several times around the drum 1, and the extra working length 2a of the cable 2 to be measured is supported by supports 11, 11. There is. Thereby, the pipes 8, 8 can be supported diagonally. In addition, hemp rope 10
The intermediate position is electrically insulated by insulating materials 10a, 10a.

In this way, when the PVC pipe 8 is used to maintain the oil-immersed state of the condenser cone 7, it can be easily supported by the hemp rope 10 since its weight is small. Therefore, the frame 5
(See FIG. 2) is not necessary, and the assembly work of the terminal end portion 6 can be completed easily and in a short time. In addition, since the PVC pipes 8, 8 are supported diagonally, the extra length of the cable 2 to be measured is small, and the conductor pull-out rods 2A, 2A protruding from the pipes 8, 8 are located below, so the measurement work is easy. becomes easier.

Although the pipe 8 made of PVC is used in the above embodiment, it goes without saying that any pipe made of a lightweight plastic material with excellent insulation properties and mechanical strength may be used.

Further, the support of the pipes 8, 8 is not limited to the hemp rope 10, but any rope material capable of supporting the pipe 8 may be used.

(Effects of the invention) According to the invention, the capacitor cone attached to the cable end is placed inside a lightweight insulated pipe made of plastic or the like containing insulating oil, and the insulated pipe is supported diagonally. This simplifies the assembly work of the test end, eliminates the need for a stand, and is therefore economical, and the remaining length of the cable required for work is short. Furthermore, since the insulating pipe is supported diagonally, it also has the advantage of making measurement work easier.

[Brief explanation of the drawing]

FIG. 1 is a diagram schematically showing a cable frame test terminal end according to an embodiment of the present invention, and FIG. 2 is a diagram schematically showing a conventional cable frame test terminal end. 1... Cable drum, 2... Cable to be measured, 6... Termination section, 7... Capacitor cone, 8
...Insulating pipe, 9...Insulating oil, 10...Hemp rope, 11...Support stand.

Claims (1)

[Scope of utility model registration request] A capacitor cone attached to at least one end of a cable wound around a cable drum, an insulating pipe in which the capacitor cone is housed and filled with insulating oil, and an insulating pipe that is tilted and attached to the drum. and a connecting means for connecting to a cable frame test terminal.