KR100864285B1 - Compact covering type substation using solid isolated - Google Patents

Abstract

A compact shielding type power distribution system is provided to improve an insulation performance and prevent an electric shock by maintaining a waterproofing without having an additional waterproofing device. A compact shielding type power distribution system includes an error section automatic switch(11), a transformer(14), a Y-divergent connection member(20), and a cable L-bow connection member(25). The transformer has a transformer unit which is installed on a lower frame body. An upper frame body is stacked on the lower frame body. The error section automatic switch which configures a super high voltage unit is arranged on a front/rear part of the upper frame body. The lower frame body is integrally coupled to the upper frame body. An under cable is coupled to a first bushing connection unit which is linearly located on a front plane of the error section automatic switch. A second bushing connection unit which is linearly located on a left side of the error section automatic switch is coupled to a fuse embedded I-type connection member by the Y-divergent connection member. The first bushing connection unit which is linearly located on a right side of the transformer is coupled to the fuse embedded I-type member. The first bushing connection unit which is linearly located on a right side of the transformer is coupled to the fuse embedded I-type member by a linear divergent type connection member. A second bushing connection member which is linearly located on an upper part of the transformer is coupled to a main circuit breaker of a low voltage power distribution board by a cable of a low voltage connection device.

Description

Compact covering type substation equipment using solid insulation

The present invention relates to a compact shield type water substation using solid insulation, and more specifically, to manufacture the water substation facility as an independent high voltage unit and a transformer unit as separate objects, and the objects are separated from each other in a completely waterproof and shielded structure. This makes it easy to transport and install the water substation facilities when installing the water substation facilities, and to prevent electric shock accidents by insulating and completely shielding all the charging parts of the high voltage unit by solid insulation. The present invention relates to a compact shielded water substation facility using solid insulation, which can greatly reduce the volume and installation space of the water substation facility as a laminated structure.

Water substation facilities are devices installed in power plants, substations, or buildings with electrical facilities, and are classified to facilitate the opening and closing of converters and the control of devices by arranging safety devices, instruments, indicators, and relays therein.

The water substation facility is divided into an extra high pressure unit and a transformer unit, the extra high pressure unit functions to receive electricity of a high pressure or a special high pressure supplied from the outside, and the transformer unit decompresses the high pressure or special high pressure electricity to the load of the customer The low pressure part functions to send low voltage electricity to a plurality of loads.

In the conventional air insulation type water substation equipment, since the high voltage section and the transformer section, which constitute the water substation equipment, have to maintain the insulation distance to insulate each other, the water substation equipment becomes bulky and the weight increases, so the water substation equipment is installed. It is not easy to carry and install the water substation equipment.

In addition, since the outside of the charging section (connection point between the conductors) of the extra-high voltage section and the transformer section is not insulated, there is a high risk of electric shock.

In other words, if the water substation is installed in a basement or outdoors with high humidity, it may cause a safety accident due to leakage current of the high voltage section, transformer section, and low voltage section. Therefore, waterproof the space where the water substation facility will be installed before installing the water substation facility. In addition, the manager must check the humidity of the space where the water substation is installed.

In order to alleviate these drawbacks, a charging part sealed power receiving facility (Utility Model Application No. 20-2006-19492) has recently been disclosed.

However, even if the source technology is connected and assembled with fault zone automatic switch, instrument transformer, transformer, epoxy mold cartridge, cable connection material (elbow connection material) and grounded, epoxy mold cartridge is an insulating material, so it is partially shielded structure instead of fully shielded. Insulation distance is required.

In addition, the power fuse unit of the failure section automatic switchgear is embedded in the epoxy mold power fuse cartridge, and the secondary side is provided by the cable wiring method of the elbow connection material, which is complicated by cable wiring.

In addition, it is the connection structure of the automatic switchgear of the fault zone and the transformer of instrument and the horizontal wiring of the transformer, and the connection between the transformer and the transformer of the instrument and the switch of the instrument and the automatic switch of the fault section is also connected by the cable wiring of the elbow connection material. As a result, the processing complexity of the cable wiring prevented compactness.

In other words, the above-described source technology,

First, the connection between the transformer, instrument transformer, and failure interval automatic switch is connected to the cable wiring method by the elbow connection material has a complicated process of cable wiring.

Secondly, the arrangement of transformers, transformers for transformers, automatic switchgear of failure section is provided in the horizontal arrangement structure, and each bushing connection part of each device is connected by elbow connection material and the elbow connection material is connected by long wires. There is a disadvantage in that the compactness cannot be realized because the space occupancy is high because the space between devices cannot be eliminated.

The present invention can significantly reduce the installation space by realizing the complete shielding of the water substation equipment, to maintain the waterproof state without having a separate waterproof device to prevent an electric shock accident by maximizing the insulation performance. have.

That is, the present invention is to maximize the safety by the complete shielding structure of the insulation sealing using the connection material of the extra-high voltage insulation portion completely shielded outside.

In the present invention, the current-limit fuse is assembled in a solid insulator connection member (epoxy or EPDM rubber) that is completely shielded from the outside, and is directly connected to the bushing connection part of the breaker section automatic switch and the instrument transformer by one-touch method instead of the cable wiring connection. It is easy to assemble and minimize the installation space, while the power fuse can be replaced to increase the economics.

In addition, the present invention provides a compact structure in a parallel laminated structure in which a failure section automatic switchgear and an instrument transformer are stacked on top of a transformer, and mutually connected by a completely shielded connection member, thereby simplifying the structure and omitting construction by omitting the cable wiring. Ease of use, ease of carrying, and maximized safety by full shielding.

That is, the present invention is shielded all the failure zone automatic switch, instrument transformer, transformer, fuse-embedded connection material, elbow arrester, cable connection material, etc., it is possible to prevent the electric shock accident, such as a complete shield to form the equipotential when connected to the ground have.

The compact shielding water substation facility using the solid insulation of the first embodiment according to the present invention for achieving the above object,

In the water shielding ratio for compact shielding using solid insulation including an extra high voltage and a transformer,

The transformer constituting the transformer unit is disposed in the lower frame body formed of a plurality of frames,

A failure section automatic switchgear, a current-limiting fuse and an arrester, and a transformer for instrumentation are arranged in the upper frame body formed of a plurality of frames stacked on the lower frame body. The underground cable is connected to the primary side bushing connection part which is located in the front straight line of the failure section automatic switchgear by elbow connecting member, and the secondary side bushing connection part which is located up and down in a straight line on the left side of the failure section automatic switchgear and built in fuse The type I connecting member is connected by the Y branch connecting member, and the secondary side bushing connecting portion of the failure section automatic switchgear and the other terminal of the Y branch connecting member which is not connected to the fuse-embedded I type connecting member are connected to the type A arrester.

The primary side bushing connecting portion located in a straight line on the right side of the fuse-mounting I-type connecting member and the instrument transformer is connected by a straight branch connecting member, and the secondary side bushing connecting portion located in a straight line on the left side of the instrument transformer and the transformer The primary side bushing connecting portion located in a straight line at the top is connected by a cable elbow connecting member, and the secondary side bushing connecting portion located in a straight line at the top of the transformer is connected to the low voltage switchboard parking terminal by the low voltage connecting device.

In addition, the compact shielding water substation facility using the solid insulation of the second embodiment according to the present invention,

In the compact shielding water substation facility using solid insulation including an extra high voltage and a transformer,

The transformer constituting the transformer unit is disposed in the lower frame body formed of a plurality of frames,

A failure section automatic switchgear and an instrument transformer are formed in the upper frame body formed of a plurality of frames stacked on the lower frame body and before and after the high pressure part, and the lower frame body and the upper frame body are integrally fastened. A cable is connected to the primary side bushing connection in a straight line on the front of the fault zone automatic switch by the elbow connector, and the secondary side bushing connection and the fuse-integrated type I connection member located in a straight line on the front right side of the fault zone automatic switchgear are Y The other terminal of the secondary side bushing connecting portion of the failure section automatic switchgear and the Y-branching connecting member which is not connected to the fuse-embedded I-type connecting member is connected to the a-type arrester by a branch connecting member,

The fuse-embedded type I connection member is connected by a primary side bushing connection portion which is located in a straight line on the front right side of the instrument transformer, and a secondary bushing connection portion which is located in a straight line on the left side of the instrument transformer in a straight line on the upper portion of the transformer. The primary side bushing connecting portion located is connected by a cable elbow connecting material, and the secondary side bushing connecting portion located in a straight line on the upper portion of the transformer is connected to the low voltage switchboard parking terminal by the low voltage connecting device.

Therefore, according to the present invention, the special high-voltage unit and the transformer unit constituting the water substation equipment are designed to be manufactured as independent objects, respectively, so that the transport and construction of the water substation facilities can be easily performed even in a narrow space.

In addition, the present invention has an effect that can significantly reduce the installation space of the water substation equipment by arranging a special high-pressure unit including a transformer unit and a failure section automatic switch, a current-limit fuse, a transformer for transformers, an arrester.

Furthermore, the present invention completely shields the extra-high pressure part by special epoxy or EPDM rubber solid insulation, and does not have to provide a separate waterproof device by using a connecting material having electrical shielding function of each component of the extra-high pressure part and the transformer part. It maintains waterproofness and improves insulation performance so that an electric shock accident does not occur.

In addition, the low voltage part can be installed as a separate panel by combining with the power receiving facility consisting of the special high voltage part and the transformer part, and can be used as an integrated type.At the same time, the low voltage part can be installed near the load (distribution board, etc.) By making it possible to connect with each other, it is possible to significantly reduce the cable requirements for connection from the water substation to the load (distribution board).

The water substation facility according to the present invention is composed of a special high voltage part and a transformer part in which all the connection parts are completely shielded by special epoxy or EPDM rubber solid insulation, and the special high pressure part and the transformer part are manufactured as separate objects by separate frames and are integrally combined. Since it is designed to be possible, it is easy to transport and install the water substation facilities when installing the water substation facilities.

Referring to Figure 9, the high-pressure section has a failure section automatic section switch (Lighting Arrester), Lightning Arrester, current-limiting fuse, instrument transformer, etc., the transformer section is composed of a transformer, the low voltage section is a conventional low-pressure parking short circuit And power factor correction capacitors and wiring breakers.

Hereinafter, the high pressure part and the transformer part of the first embodiment will be described with reference to FIGS. 1 to 8, and the high pressure part and the transformer of the second embodiment will be described with reference to FIGS. 10 to 16.

<Example 1>

As shown in FIGS. 1 to 8, a transformer 14 constituting a transformer unit is disposed in the lower frame body 1 formed of a plurality of frames, and the plurality of frames stacked on the lower frame body 1 are arranged. Before and after the built-in upper frame 2, a failure section automatic switchgear 11 and a current-limiting fuse, lightning arrester and instrument transformer 13 constituting the extra-high pressure part are arranged, and the lower frame 1 and the upper frame are arranged. Sieve 2 is integrally fastened.

The underground cable 16 is connected to the primary side bushing connecting portion 18 located in a straight line with the front face of the failure section automatic switchgear 11 by an elbow connecting member 17, and the upper and lower sides are connected to the left side of the failure section automatic switch 11. The Y-branch connecting member 20 connected to the lower connecting portion 15-2 of the fuse-embedded I-type connecting member 15 and one terminal 20-1 to the secondary side bushing connecting portion 19 located in a straight line is connected to the other terminal 20-. 2), the center terminal 20-3 of the Y-branch connecting member 20 is connected to the a-type arrester 12.

Therefore, the fuse-embedded I-type connecting member 15 is located in a structure stacked up and down in the space between the failure section automatic switch 11 and the instrument transformer 13.

The connecting terminal of the upper connecting portion 15-1 of the fuse-embedded I-type connecting member 15 is connected to one terminal 22-1 of the linear branch connecting member 22, and the other side of the linear branch connecting member 22. Terminal 22-2 is connected to the primary side bushing connecting portion 21, which is located in a straight line up and down on the right side of the instrument transformer 13, and the secondary side bushing connecting portion 23, which is located in a straight line on the right side of the instrument transformer 13. And the primary side bushing connecting portion 24 located in a straight line on the top of the transformer 14 are connected by a cable elbow connecting member 25.

Here, the cable elbow connecting member 25 is an elbow connecting member for insulating connection between the secondary side bushing connecting portion 23 of the instrument transformer 13 and the primary side bushing connecting portion 24 of the transformer 14 at both ends of the cable 26. 27) 28.

The secondary side bushing connecting portion 29 located in a straight line on the transformer 14 is connected to the low voltage switchboard parking terminal by the cable 30 of the low voltage connecting device 31 to be connected.

In addition, the failure section automatic switch 11 and the instrument transformer 13 can be assembled by changing the position of each other.

The preferred embodiment of the present invention is a connection point (charger) between the transformer 14 and the failure section automatic switch 11 and the instrument transformer 13 is a structure that can be separated and connected in a completely waterproof and shielded structure, of course, All connections are made in a compact structure connected in the shortest distance by a laminated assembly by a fully shielded connection member.

That is, a fuse-incorporated I-type connection member having a current-limiting fuse 15-3 extending from the secondary side bushing connecting portion 19 of the failure section automatic switch 11 to the primary side bushing connecting portion 21 of the instrument transformer 13. In the connection of (15) and the Y-branch connecting member 20, the a-type lightning arrester 12, the linear branching connecting member 22, and the like, each individual object is assembled by forming a block type in a male-to-female coupling relationship, thereby making it possible to integrate itself. No cables or separate conductors are used, making the installation space as compact as possible.

<Example 2>

10 to 16, the transformer 14a constituting the transformer unit is disposed in the lower frame body 1a constructed of a plurality of frames,

A failure section automatic switch 11a and an instrument transformer 13a constituting a special high-pressure part before and after in the upper frame 2a constructed of a plurality of frames stacked on the lower frame 1a are disposed, The frame body 1a and the upper frame body 2a are integrally fastened.

The underground cable 16a is connected to the primary side bushing connecting portion 18a located in a straight line on the front face of the failure section automatic switch 11a by the elbow connecting member 17a, and on the front right side of the failure section automatic switch 11a. The Y-branch connecting member 20a connected to the lower connecting portion 15a-2 of the fuse-embedded I-type connecting member 15a and the one side terminal 20a-1 on the secondary side bushing connecting portion 19a positioned up and down is connected to the other terminal ( 20a-2) connected to the secondary side bushing connecting portion 19a of the failure section automatic switch 11a and the other terminal of the Y branch connecting member 20a which is not connected to the fuse-embedded I-type connecting member 15a. It is connected to the arrester 12a.

In other words, the fuse-embedded I-type connecting member 15a is located on the right side of the failure section automatic switch 11a.

And the fuse-embedded I-type connecting member (15a) is directly connected to the primary side bushing connecting portion (21a) located in a straight line up and down on the front right side of the instrument transformer (13a), and 2 located in a straight line on the left side of the instrument transformer (13a) The primary side bushing connecting portion 23a and the primary side bushing connecting portion 24a located in a straight line on the upper portion of the transformer 14a are connected by a cable elbow connecting member 25a.

Here, the cable elbow connecting member 25a, which is inclinedly connected, insulates the secondary side bushing connecting portion 23a of the instrument transformer 13a and the primary side bushing connecting portion 24a of the transformer 14a from both ends of the cable 26a. It has elbow connection material 27a (28a).

The secondary side bushing connecting portion 29a located in a straight line on the upper portion of the transformer 14a is connected to the low voltage switchboard parking terminal by the cable 30a of the low voltage connecting device 31a to be connected.

In addition, the failure section automatic switch 11a and the instrument transformer 13a may be assembled by changing their positions.

In this embodiment, the connection point (charge part) between the transformer 14a and the failure section automatic switch 11a and the instrument transformer 13a is completely waterproof and shielded, and can be separated and connected to each other. It consists of a compact structure connected by laminated assembly by the shielding connection material, and connected in the shortest distance.

That is, a fuse-incorporated I-type connecting member incorporating a current-limiting fuse 15a-3 that extends from the secondary side bushing connecting portion 19a of the failure section automatic switch 11a to the primary side bushing connecting portion 21a of the instrument transformer 13a. In the connection of (15a), Y-branch connecting material (20a), type-A lightning arrester (12a), etc., each individual object is assembled by combining the male and female blocks in a male-to-female coupling relationship so that no cable or separate conductor is used. This will make the installation space as compact as possible.

1 and 2 are perspective views of the extra-high voltage portion and the transformer portion in the upper lower frame body of the water substation facility according to the first embodiment of the present invention.

3 is a front view of an extra-high voltage portion and a transformer portion in a frame of the water substation facility according to the first embodiment of the present invention.

4 and 5 are left and right side views of the extra-high voltage portion and the transformer portion in the frame of the water substation facility according to the first embodiment of the present invention.

6 is a plan view of the extra-high voltage portion and the transformer portion in the frame of the water substation facility according to the first embodiment of the present invention.

7 is an exploded perspective view of the extra-high voltage unit and the transformer unit in which the frame body is removed from the water substation facility according to the first embodiment of the present invention.

FIG. 8 is a partial perspective view taken from FIG. 7 and illustrates a connection perspective view of a bushing connecting portion of a failure zone automatic switchgear and a bushing connecting portion of an instrument transformer; FIG.

9 is a circuit diagram of the water substation facility according to the first embodiment of the present invention.

10 is a perspective view of an extra-high voltage part and a transformer part in a frame of the water substation facility according to the second embodiment of the present invention.

11 is a front view of an extra-high voltage portion and a transformer portion in a frame of the water substation facility according to the second embodiment of the present invention.

12 and 13 are left and right side views of the extra-high voltage portion and the transformer portion in the frame body of the water substation facility according to the second embodiment of the present invention.

14 is a plan view of the extra-high voltage portion and the transformer portion in the frame of the water substation facility according to the second embodiment of the present invention.

15 is an exploded perspective view of the extra-high voltage unit and the transformer unit in which the frame body is removed from the water substation facility according to the second embodiment of the present invention.

FIG. 16 is a partial perspective view taken from FIG. 15 and illustrates a connection perspective view of a bushing connecting portion of an automatic fault breaker of the present invention and a bushing connecting portion of an instrument transformer; FIG.

** Explanation of symbols for main parts of drawings **

1, 1a: lower frame

2, 2a: upper frame

11, 11a: Automatic failure switch

13, 13a: instrument transformer

14, 14a: transformer

15, 15a: I-type connection member with fuse

16, 16a: underground cable

25, 25a: cable elbow connector

30, 30a: cable

Claims (10)

In the compact shielding water substation facility using solid insulation including an extra high voltage and a transformer, A transformer constituting a transformer unit is disposed in the lower frame body 1, and a failure section automatic switchgear 11 and an instrument transformer 13 constituting a special high pressure unit in front and rear in the upper frame body 1 stacked on the lower frame body 1 are arranged. ) Is disposed, the lower frame body 1 and the upper frame body 2 is integrally fastened, The underground cable 16 is connected to the primary side bushing connecting portion 18, which is positioned by the elbow connecting member 17 in a straight line with the front face of the failure section automatic switch 11, and is arranged vertically on the left side of the failure section automatic switch 11. The secondary side bushing connecting portion 19 and the fuse-embedded I-type connecting member 15 are connected by the Y-branch connecting member 20, and the secondary side bushing connecting portion 19 and the fuse-embedding of the failure section automatic switch 11 are installed. The other terminal of the Y-branch connecting member 20, which is not connected to the I-type connecting member 15, is connected to the a-type arrester 12, The fuse-embedded I-type connecting member 15 and the primary side bushing connecting portion 21 which are located in a straight line up and down on the right side of the instrument transformer 13 are connected by a straight branch connecting member 22, and the instrument transformer 13 is connected. The secondary side bushing connecting portion 23 located in a straight line on the right side of the first side bushing connecting portion 24 located in a straight line on the upper portion of the transformer 14 is connected by the cable elbow connecting member 25, Compact with solid insulation, characterized in that the secondary side bushing connecting portion 29 located in a straight line on the transformer 14 is connected to a normal low voltage switchgear parking terminal by the cable 30 of the low voltage connecting device 31. Shielded water substation facility. The method of claim 1, The fuse-embedded I-type connecting member 15 has a current-limiting fuse 15-3 assembled therein between the lower connecting portions 15-2 that are assembled to be detachably coupled to the upper connecting portion 15-1. Both sides of the fuse 15-3 are connected to the upper connection terminal and the lower connection terminal which are insert-coupled to the upper connection part 15-1 and the lower connection part 15-2, respectively. The connecting terminal of the upper connecting portion 15-1 is connected to one terminal 22-1 of the linear branch connecting member 22, and the other terminal 22-2 of the linear branch connecting member 22 is a transformer for instrument (13) is connected to the primary side bushing connecting portion 21, and the lower connecting portion 15-2 is connected to one side terminal 20-1 of the Y-type branch connecting member 20, the Y-type branch connecting member 20 Is connected to the secondary side bushing connecting portion 19 of the failure section automatic switch 11 by the other terminal 20-2 of The center terminal (20-3) of the Y-type branch connection member 20 is a compact shielding water substation facility using solid insulation, characterized in that the a-type arrester 12 is connected to. The method according to claim 1 or 2, Fuse-embedded type I connection member incorporating a current-limiting fuse 15-3 from the secondary side bushing connecting portion 19 of the failure section automatic switch 11 to the primary side bushing connecting portion 21 of the instrument transformer 13 ( 15) and the Y-branch connecting member 20, a-type arrester 12, the straight branch connecting member 22 is configured to minimize the installation space by assembling each other in the form of a male and female coupling block without a separate cable or conductor. Compact shielded water substation equipment using solid insulation. The method of claim 1, The breakdown section automatic switchgear (11) and the instrument transformer (13) is a compact shield type water substation facility using solid insulation, characterized in that the structure is assembled by changing the position of each other. The method of claim 1, The cable elbow connecting member 25 has elbow connecting members (27, 28) for insulating connection at both ends of the cable (26). In the compact shielding water substation facility using solid insulation including an extra high voltage and a transformer, A transformer 14a constituting a transformer unit is disposed in the lower frame body 1a, and a fault section automatic switch 11a and a current-limiting unit constituting a special high pressure unit in front and rear in the upper frame body 2a stacked on the lower frame body. A fuse, an arrester, and a transformer 13a for the instrument are disposed, and the lower frame body 1a and the upper frame body 2a are integrally fastened, The underground cable 16a is connected to the primary side bushing connecting portion 18a located in a straight line on the front surface of the failure section automatic switch 11a by the elbow connecting member 17a, and on the front right side of the failure section automatic switch 11a. The secondary side bushing connecting portion 19a and the fuse-embedded I-shaped connecting member 15a, which are located in a straight line up and down, are connected by the Y-branch connecting member 20a. The other terminal of the Y-branch connecting member 20a which is not connected to the fuse-embedded I-type connecting member 15a is connected to the a-type arrester 12a, The fuse-embedded I-type connecting member 15a is directly connected to the primary side bushing connecting portion 21a, which is located in a straight line on the front right side of the instrument transformer 13a, and is located in a straight line on the left side of the instrument transformer 13a. The secondary side bushing connecting portion 23a and the primary side bushing connecting portion 24a located in a straight line on the upper portion of the transformer 14a are connected by the cable elbow connecting member 25a, The secondary side bushing connecting portion 29a located in a straight line on the upper portion of the transformer 14a is connected to a normal low voltage switchgear parking terminal by a cable 30a of the low voltage connecting device 31a. Shielded water substation facility. The method of claim 6, The breakdown section automatic switchgear (11a) and the instrument transformer (13a) is a compact shield type water substation facility using solid insulation, characterized in that the mutually assembled position. The method of claim 6, The fuse-embedded I-type connection member 15a has a current-limiting fuse 15a-3 assembled therein between the lower connection portions 15a-2 that are assembled and detachably coupled to the upper connection portion 15a-1. Both sides of the fuse 15a-3 are connected to an upper connection terminal and a lower connection terminal which are insert-coupled to the upper connection part 15a-1 and the lower connection part 15a-2, respectively. The connecting terminal of the upper connecting portion 15a-1 is connected to the primary side bushing connecting portion 21a of the instrument transformer 13a, and the lower connecting portion 15a-2 is connected to one side terminal of the Y-type branch connecting member 20a. 20a-1), and is connected to the secondary side bushing connecting portion 19a of the failure section automatic switch 11a by the other terminal 20a-2 of the Y-type branch connecting member 20a, The center terminal (20a-3) of the Y-type branch connection member (20a) is a compact shielding water substation facility using solid insulation, characterized in that the a-type arrester (12a) is connected to. The method according to claim 6 or 8, Fuse-embedded type I connection member incorporating a current-limiting fuse 15a-3 from the secondary side bushing connecting portion 19a of the failure section automatic switch 11a to the primary side bushing connecting portion 21a of the instrument transformer 13a. 15a) and the Y-branch connecting member 20a and the a-type lightning arrester 12a are constructed to minimize the installation space by assembling each other in the form of a male and female coupling block without a separate cable or conductor. Type water substation equipment. The method of claim 6, The cable elbow connecting member (25a) has elbow connecting members (27a, 28a) for insulating connection at both ends of the cable (26a), the compact shield type water substation facility using solid insulation.

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