JPS60113411A - Device for fixing current transformer - Google Patents

Abstract

PURPOSE:To prevent the rotation of a current transformer by arranging a member for fixing a current transformer next to the current transformer which are united by a pre-pregnant insulator to fix the member for fixing a transformer to a fixed part. CONSTITUTION:A spacer 11 convered with a resin pre-pregnant insulator in advance, current transformer 2, 2 and a transformer fixing member 7 are inserted in an attachment frame 1 in this order, after which stoppers 12 are fixed to the frame 1 by bolts 15 and are fastened by nuts 13. Thus assembled body is heated to cure the pre-pregnant resin and the current transformers 2, 2 and a spacer 11 become unitary with the transformer fixing member 7. Consequently, as the transformer fixing member 7 is fixed to the attachment frame 1 as a fixed part through stads 9 and stoppers 12, rotation of the transformer 2 can be prevented.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to a current transformer, for example a gas insulated switchgear (GIS).
This invention relates to a fixing device for a current transformer.

[Prior art]

Figures 1 and 2 are the conventional current transformer fixing devices for this building.
There was something shown in the figure. In the figure, (1) is a frame with a cylindrical part (10
1) and a flange (102). (3) is a holding plate that presses the current transformer (2) against the flange (102);
) is a bolt that fastens the holding plate (3) to the flange (102), (5) and (2) are through conductors, and (6) is a gas insulated switchgear tank.

As can be seen from FIGS. 1 and 2, the current transformer (2) (three cylinders in the illustrated embodiment) is connected to the current transformer (2) and the flange (102) by force. Flushware (2),
(2) It is fixed by the friction force between the current transformer (2) and the holding plate (3). However, if it is used for many years in this state, the insulating material used in the current transformer (2) will dry up, and the tightening force of the bolt (4) will decrease due to vibrations from the operation of the circuit breaker, etc., and the frictional force described above will decrease. There was a risk that the current transformer (2) would rotate and the secondary IJ-cord (not shown) would be disconnected.

[Summary of the invention]

This invention was made in order to eliminate the above-mentioned drawbacks of the conventional one, by providing a current transformer fixing member in instantaneous contact with the transformer, and integrating these with a prepreg insulator. It is an object of the present invention to provide a current transformer fixing device which prevents rotation of a current transformer by fixing it to a fixed part.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 3 and 4. In the figure, (7) is a current transformer fixing member which also serves as a holding plate, and is made of an annular gold knitted plate, around which a thermosetting resin prepreg insulator (8) is applied by taping or the like.

(9) is a stud welded to the current transformer fixing member (7);
(10) is a thermosetting resin prepreg resin material applied around the current transformer (2), (11) is an annular metal plate (1, 11
), (12) is a stopper that is fixed to the cylindrical part (101) of frame (1), and (13) is stud (9). (J4) is attached with a bolt that fixes it to the frame (1) and the gas tank (6). (15) is attached with a bolt that fixes the stopper (12) to the facing part of the frame (1). The &6 portion of the bolt is made so as not to protrude inside the cylindrical 1 fls (101).

Attach the spacer (11) and current transformer (2) to the frame (1) using the μ shown in the figure.

(2), install the current transformer fixing member ('7) in this order on the frame (
1), and then insert the stopper (12) into the bolt (1).
At step 5), fix it to the frame (1) and tighten the nut (13). If the assembled product is heated to convert the prepreg resin into e-e, it becomes a current transformer (2).

(2) The spacer (11) is integrated with the current transformer fixing member (7). However, since the current transformer fixing member (7) is fixed to the frame (1) via the stud (9) and stopper (12), the current transformer (2) cannot rotate. It disappears. When the resin is heated and hardened as described above, the nut (13) will loosen due to heat shrinkage, so return it to room temperature and tighten it again with the appropriate torque. Spacer (11)
The spacer (11) is mechanically fixed to the frame (1) by providing the flange (102) of the frame (1) with grooves that fit into each other, and the current transformer (2) is -Jt. #It is firmly fixed, but if desired, use 16 spacers (11)
can also be omitted.

2. In the above example, thermosetting resin prepreg insulation is applied around all the objects to be fixed to each other, or there is sufficient adhesion force between the outer peripheral insulation of the current transformer and the resin prepreg insulation. XJ) If possible, the resin prepreg insulator is omitted for the current transformer (2) to the right of the current transformer rotation member (7) in Figure 3, and the current transformer (2) to the right of the current transformer rotation member (7) is omitted. It is better to apply resin prepreg insulation to the material. Furthermore, the current transformer fixing member (7
) and the metal plate (111) are made of a metal that does not easily adhere to resin prepreg insulation, so resin prepreg insulation is applied around the entire circumference. In this case, it is not necessary to apply it all around the circumference, and it can be applied to the joint between the current transformer fixing member and the transformer, the joint between the spacer (11) and the current transformer (2), or the joint between the current transformer (2) and the current transformer (2).
), (2) A resin prepreg insulator may be placed only at the joint □ between the proboscises to be fixed to each other, such as at the joints of comrades. Furthermore, the current transformer fixing member (7) may be fixed to the gas tank (6) as a fixed part. I don't understand why Ibarayaki was chosen as it was arbitrary. Moreover, this jQ light can be similarly applied to current transformers other than current transformers for gas-insulated switchgear.

〔Effect of the invention〕

As described above, in this invention, a current transformer fixing member is provided in contact with the current transformer, and these are fixed and integrated with the resin prepreg insulator placed on the 1#) I, and the current transformer is fixed to the current transformer. Since the fixed member is fixed to the fixed part, rotation of the current transformer is prevented, and there is no risk of the secondary lead breaking (
You can get the following effect.

[Brief explanation of the drawing]

FIG. 1 is a front view of a conventional current transformer device, FIG. 2 is a partially cutaway sectional view taken along line 11--11 in FIG. 1, and FIG. 3 is a front view of an embodiment of the present invention. Figure 4 shows the line IV-I in Figure 3.
It is a partially cutaway sectional view along the V, and the same reference numerals in the figure indicate the same -
t′πS or its equivalent. In the figure, (2) is the current transformer, (7) is the current transformer g fixing member, (1) and (6) are the fixing parts, and (8) and (1,0) are the thermosetting resin prepreg insulators. It is. Agent: Mr. Masu Oiwa: (7) Figure 1 [■ Figure 2

Claims (1)

[Claims] 1. A current transformer fixing member is provided adjacent to the current transformer, and the current transformer and the current transformer fixing member are fixed to each other with a resin prepreg insulator disposed between them. A current transformer fixing device, characterized in that the current transformer fixing member is integrated with the fixed part and fixed to the fixing part. 2. The current transformer fixing device according to claim 1, wherein a resin prepreg insulator is wrapped around the current transformer and around the current transformer fixing member. 3. The current transformer fixing device according to claim 1, wherein the resin of the resin prepreg insulator is thermosetting. 4. In a current transformer device having a cylindrical part and a flange part, in which the current transformer is fitted into the cylindrical part of the frame, the current transformer fixing member attaches the current transformer to the flange part. The current transformer fixing device according to claim 1, wherein the holding plate (1) is pressed against the current transformer fixing device, and the frame is a fixed part for said attachment. 5 A patent in which a spacer coated with resin prepreg resin is placed around a metal plate between the current transformer and the flange portion of the frame, and unevenness is provided on the metal plate and the flange portion to fit into each other. A current transformer fixing device according to claim 1.