KR20160121645A - Insulating cover for bushing terminal - Google Patents

Insulating cover for bushing terminal Download PDF

Info

Publication number
KR20160121645A
KR20160121645A KR1020150050184A KR20150050184A KR20160121645A KR 20160121645 A KR20160121645 A KR 20160121645A KR 1020150050184 A KR1020150050184 A KR 1020150050184A KR 20150050184 A KR20150050184 A KR 20150050184A KR 20160121645 A KR20160121645 A KR 20160121645A
Authority
KR
South Korea
Prior art keywords
cover
terminal block
block bolt
cable
terminal
Prior art date
Application number
KR1020150050184A
Other languages
Korean (ko)
Other versions
KR101693021B1 (en
Inventor
이용철
이현정
이인철
이상면
Original Assignee
(주)대림엠이씨
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주)대림엠이씨 filed Critical (주)대림엠이씨
Priority to KR1020150050184A priority Critical patent/KR101693021B1/en
Publication of KR20160121645A publication Critical patent/KR20160121645A/en
Application granted granted Critical
Publication of KR101693021B1 publication Critical patent/KR101693021B1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/26—Lead-in insulators; Lead-through insulators
    • H01B17/30—Sealing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/02—Casings

Abstract

And an insulating cover for a bushing terminal for covering a terminal bolt for connecting a cable to the terminal block, the cover including a cover body detachably coupled to cover the terminal block and the terminal block bolt, ; And a tracking preventing portion protruding from the inside of the cover body close to the head portion of the terminal block bolt. Thus, it is possible to provide an insulating cover for a bushing terminal which can reduce a tracking phenomenon.

Description

Insulation cover for bushing terminal {INSULATING COVER FOR BUSHING TERMINAL}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insulating cover for a bushing terminal, and more particularly, to an insulating cover for a bushing terminal provided to protect a bushing terminal through which a high voltage is applied, such as a transformer.

Generally, there is a bushing terminal exposed to a high-voltage transformer such as 22.9 kV or a lightning arrester, and an insulating cover for protecting the bushing terminal from the outside is provided.

As described above, the insulating cover for the bushing terminal has to be rigid so as not to be separated by an external force such as wind, and has been researched so as to maintain the airtightness so as to prevent the occurrence of an electric shock due to inflow of rainwater or the like.

One such conventional insulating cover is disclosed in Korean Registered Utility Model Registration No. 20-0384366.

1, the conventional insulation cover for a transformer is a cover for inserting a structure in which a high-voltage cable 13 is connected to a charging portion 15 coupled to an upper portion of an insulator 10 from the outside, The cover 100 is formed of a first body 110 and a second body vertically separated from each other and the first body 110 and the second body are formed such that the ends of the terminal block bolts 12 of the charging part 15 The width of the protruded portion is wider than the width of the opposite portion, and fastening ends are formed at portions corresponding to each other. The fastening portions are coupled to each other through the fastening member, And a lower packing 162 made of an insulating material is coupled to the insulator 10 so as to seal the insulator 10. The insulator 10 is made of an insulating material.

Accordingly, such a conventional insulating cover for a transformer can prevent tracking by keeping a distance of 20 mm or more between the terminal block bolt and the insulating cover, and by using the upper packing and the lower packing to maintain the airtightness to the cable and the insulator, Moisture and dust can be prevented from entering.

However, in the conventional insulation cover for a transformer, when an operator inserting the insulation cover mistakenly installs the narrow space in the insulation cover in the direction in which the terminal block bolt 12 is located, the inner surface of the insulation cover covers the terminal block bolt 12, So that the tracking phenomenon can easily occur at this portion.

In addition, the conventional insulation cover for a transformer has a problem in that when the insulation cover itself is exposed to the outside for a long time, the insulation performance is weakened and the insulation phenomenon may occur.

Embodiments of the present invention are to provide an insulating cover for a bushing terminal that can prevent the erroneous mounting or the like of the operator during the insulating cover mounting work and reduce the tracking phenomenon.

Embodiments of the present invention also provide a bushing insulation cover capable of continuously maintaining insulation performance of an insulation cover even when exposed to the outside for a long time.

The insulating cover for a bushing terminal according to an embodiment of the present invention includes a terminal block coupled to one side of an insulator and an insulating cover for covering a terminal block bolt for connecting a cable to the terminal block, A cover main body detachably coupled to the main body; And a tracking preventing portion protruding from the inside of the cover body close to the head portion of the terminal block bolt.

The tracking preventing portion according to the embodiment of the present invention is formed to be close to the head portion of the terminal block bolt so as to approximate the distance between the tail portion of the terminal block bolt and the inner surface of the cover body.

According to an embodiment of the present invention, when the tracking preventing portion is provided in the tail direction of the terminal block bolt, the tracking preventing portion and the tail portion of the terminal block bolt contact with each other and interfere with each other.

The cover body according to the embodiment of the present invention includes an inner cover portion formed on the inner side to cover the terminal block and the terminal block bolt and an outer cover portion formed on the outer side of the inner cover portion with a space therebetween .

According to an embodiment of the present invention, an intermediate support member may be formed between the inner cover portion and the inner cover portion.

The intermediate support member according to the embodiment of the present invention may be characterized by being formed in a honeycomb or rod shape.

The cover body according to an embodiment of the present invention includes a cable packing member for supporting the cable and an insulator packing supporting member for supporting the insulator, a cable packing member hermetically provided between the cable and the cable packing supporting member, And an insulator packing member hermetically sealed between the insulator and the insulator packing supporting portion, wherein the cable packing member and the insulator packing member are made of a silicone material.

Embodiments of the present invention can provide an insulating cover for a bushing terminal that can prevent the erroneous mounting and the like of the operator during the insulating cover mounting work and reduce the tracking phenomenon.

In addition, embodiments of the present invention can provide an insulating cover for a bushing head which can continuously maintain the insulating performance of the insulating cover even when exposed to the outside for a long time.

These drawings are for the purpose of describing an exemplary embodiment of the present invention, and therefore the technical idea of the present invention should not be construed as being limited to the accompanying drawings.
1 is a sectional view of an insulation cover for a transformer according to the prior art;
2 is a vertical sectional view of an insulating cover for a bushing terminal according to an embodiment of the present invention.
3 is an exploded perspective view of an insulating cover for a bushing terminal according to an embodiment of the present invention.
4 is a horizontal sectional view of an insulating cover for a bushing terminal according to an embodiment of the present invention.
5 is a partial detail view of an insulating cover for a bushing terminal according to an embodiment of the present invention;
6 is a partial detail view of an insulating cover for a bushing terminal according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory only and are not restrictive of the invention, It should be understood that various equivalents and modifications may be present.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

FIG. 2 is a vertical sectional view of an insulating cover for a bushing terminal according to an embodiment of the present invention, FIG. 3 is an exploded perspective view of an insulating cover for a bushing terminal according to an embodiment of the present invention, 5 and 6 are partial detail views of an insulating cover for a bushing terminal according to an embodiment of the present invention.

2, the insulating cover 30 for a bushing terminal according to the embodiment of the present invention includes a terminal block 15 coupled to one side of an insulator 11 provided on a bushing terminal 1, A cover body 31 detachably coupled to cover the terminal bolt 12 for coupling the cable 13 to the terminal block 12; And a tracking preventing portion 51 protruding from the inside of the cover main body 31 in the vicinity of the head portion 12a of the terminal block bolt 12. [

The terminal block bolts 12 are fastened to the terminal block nuts 17 in order to fix the cable 13 to the terminal block 15. The tail portion 12b of the terminal block bolt 12 protrudes longer than the head portion 12a with respect to the terminal block 15 because of the length of the terminal block bolt 12 in general.

The tail portion 12b of the terminal block bolt 12 protrudes longer than the head portion 12a with respect to the terminal block 15 so that the tail portion 12b of the terminal block bolt 12 contacts the head portion 12a The cover body 31 is located closer to the inner surface of the cover body 31 than the cover body 31 is. In this case, relative to the tail portion 12b of the terminal block bolt 12, the tail portion 12b and the head portion 12a of the terminal block bolt 12 are relatively more spaced from the inner surface of the cover body 31 There is a problem that the probability of occurrence of the tracking shape increases. In order to solve this problem, in the present invention, the tail portion 12b and the head portion 12a of the terminal block bolt 12 are spaced apart from each other substantially in the inner surface of the cover body 31 with the tracking preventing portion 51 provided therebetween .

The tracking preventing portion 51 protrudes from the inner surface of the cover main body 31 toward the head portion 12a of the terminal block bolt 12. [ As shown in FIG. 3, the tracking preventing portion 51 is formed in a curved shape so as to protrude in the direction of the head portion 12a of the terminal block bolt 12 in the up-and-down direction, And may be provided in a curved type so as to be rounded concavely as shown in FIG. However, the tracking preventing portion 51 is not limited to this, and may extend in a substantially straight line or a concave shape in the vertical direction toward the head portion 12a of the terminal block bolt 12, It may be arranged to be positioned in a convex shape. It is needless to say that the shape of the tracking preventing portion 51 may be variously changed in consideration of the manufacturing method such as injection molding.

The tracking preventing portion 51 is disposed close to the head portion 12a of the terminal block bolt 12 so as to approximate the distance A between the tail portion 12b of the terminal block bolt 12 and the inner surface of the cover body 31 . The distance B between the head portion 12a of the terminal bolt 12 and the tracking preventing portion 51 is approximately equal to the distance between the tail portion 12b of the terminal strip bolt 12 and the cover body 31, The distance between the tail portion 12b of the terminal block bolt 12 and the inner surface of the cover body 31 may be set in a range of about -5 mm to +5 mm from the distance A between the inner side surfaces of the terminal block bolts 12 A) may be as much as 20% to 30% shorter or longer. However, the range of the distance B between the head portion 12a of the terminal block bolt 12 and the tracking preventing portion 51 is not limited to this, and may be variously determined in consideration of the size of the cover body 31 and the like.

The tracking preventing portion 51 can prevent the tracking preventing portion 51 and the tail portion of the terminal block bolt 12 from being caught by the tail portion 12b of the terminal block bolt 12 when the operator installs the tracking preventing portion 51 in the direction of the tail portion 12b of the terminal block bolt 12. [ The portion 12b may contact and be interfered. 1, the conventional insulating cover for a transformer has a problem that the space inside the insulating cover is narrowed by mistake of the operator who installs the insulating cover in the direction of the tail portion of the terminal block bolt 12 So that the inner surface of the insulating cover is very close to the tail portion of the terminal block bolt 12 and the tracking phenomenon can easily occur in this portion. That is, when the operator installs the tracking preventing portion 51 in the direction of the tail portion 12b of the terminal block bolt 12, the tracking preventing portion 51 and the tail portion 12b of the terminal block bolt 12 come into contact with each other, It is possible to prevent such erroneous installation.

As shown in FIG. 3, the cover body 31 is provided in a cylindrical shape and is provided with a first cover portion 33 and a second cover portion 35 so as to open and close in the left and right direction. The cover body 31 may include a cable packing support 63 for supporting the cable 13 and an insulator packing support 67 for supporting the insulator 11 in the present invention. The cover body 31 may have a fastening portion 71 for fastening the first cover portion 33 and the second cover portion 35 to each other.

3, a plurality of fastening protrusions 73 are formed on the first cover portion 33 and a plurality of fastening protrusions 73 are formed on the second cover portion 35. In the fastening portion 71, A plurality of fastening grooves 75 may be formed to receive and fasten the fastening bolts 73. However, the present invention is not limited to this, and the fastening portion 71 may be formed in various ways, such that fastening protrusions are formed on the second cover portion 35 and fastening grooves are formed on the first cover portion 33 corresponding thereto.

A cable packing member 61 is provided so as to seal between the cable 13 and the cable packing supporting portion 63 and the insulator packing member 65 can be provided so as to seal between the insulator 11 and the insulator packing supporting portion 67 have. The cable packing member 61 and the insulator packing member 65 may be formed of a silicon material as an example of the present invention. As described above, when the cable packing member 61 and the insulator packing member 65 are made of a silicone material, the airtightness is excellent compared to a general rubber material, etc., thereby effectively preventing rainwater, dust, etc. from penetrating into the insulating cover 30 It will be possible.

5, the cover main body 31 is formed on the inner side so as to cover the terminal block 15 and the terminal block bolts 12 and includes an inner cover portion 43 and an inner cover portion 43, And an outer cover portion 41 formed on the outer side thereof with a spacing space 47 therebetween. The cover main body 31 may further include an intermediate support member 45 formed between the inner cover portion 43 and the inner cover portion 43 as an example of the present invention.

The intermediate support member 45 may be formed in a honeycomb shape to form a plurality of spacing spaces 47 that form an air layer, as shown in FIG. 5 as an example of the present invention. However, the intermediate support member 45 may be provided in various shapes according to a manufacturing method such as injection molding. That is, as shown in FIG. 6, the intermediate support member 46 may be provided in various shapes such as a bar shape.

The cover body 31 is generally made of a plastic material. When such a plastic material is exposed to the outside for a long time, the insulating property is deteriorated due to an external force such as ultraviolet rays, rain, wind, and the like. In particular, in the case of an insulation cover attached to the outside of a transformer installed on a pole, such as a pillar transformer, the insulation may be significantly deteriorated during prolonged use because it is directly contacted with strong sunlight, rain or wind.

Therefore, even if the insulation of the outer cover portion 41 of the cover main body 31 is somewhat deteriorated, the inner cover portion 43 can be prevented from being damaged, Since the insulating property is not easily broken, the insulating property can be secured for a long time, so that the cover body 31 can be used safely for a long time without replacement. By providing a separate space 47 between the outer cover part 41 and the inner cover part 43, an additional air layer can be provided to further improve the insulation effect. In addition, there is an advantage that the cover main body 31 can be supported in a solid manner by providing the intermediate support member 45 between the outer cover portion 41 and the inner cover portion 43.

2 and 3, the mounting process of the insulating cover 30 for a bushing terminal according to an embodiment of the present invention will be described.

First, the operator opens the first cover portion 33 and the second cover portion 35 of the insulating cover 30 to both sides as shown in Fig. Then, the opened first cover portion 33 and the second cover portion 35 are attached corresponding to the cable 13 and the insulator 11. After the first cover portion 33 and the second cover portion 35 are opened, they may be fastened using the fastening portion 71. [ At this time, when the operator inadvertently makes the tracking preventing portion 51 point toward the tail portion 12b of the terminal block bolt 12, the tail portion 12b of the terminal block bolt 12 and the tracking preventing portion 51 interfere with each other So that it is possible to prevent such a malfunction. Thus, the operator can easily and properly install the insulating cover as shown in Fig.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, And all changes to the scope that are deemed to be valid.

30: Insulation cover 31: Cover body
41: outer cover part 43: inner cover part
45, 46: intermediate support member 47: spacing space
51: tracking preventing portion 61: cable packing member
63: cable packing support 65: insulator packing member
67: Insulator packing support

Claims (7)

An insulation cover for a bushing terminal for covering a terminal block bolt for coupling a cable to the terminal block,
A cover body detachably coupled to cover the terminal block and the terminal block bolt; And
And an anti-tracking portion protruding from the inside of the cover body close to the head portion of the terminal block bolt. The method according to claim 1,
Wherein the tracking preventing portion is formed close to the head portion of the terminal block bolt so as to approximate a distance between the tail portion of the terminal block bolt and the inner surface of the cover body. The method according to claim 1,
Wherein when the tracking preventing portion is provided in the tail direction of the terminal block bolt, the tracking preventing portion and the tail portion of the terminal block bolt contact and interfere with each other. 4. The method according to any one of claims 1 to 3,
Wherein the cover body includes an inner cover portion formed on the inner side to cover the terminal block and the terminal block bolt and an outer cover portion formed on the outer side of the inner cover portion with a space therebetween. 5. The method of claim 4,
Wherein an intermediate support member is formed between the inner cover portion and the inner cover portion. 6. The method of claim 5,
Wherein the intermediate support member is formed in a honeycomb or rod shape. The method according to claim 1,
Wherein the cover body includes a cable packing support for supporting the cable and an insulator packing support for supporting the insulator, a cable packing member hermetically provided between the cable and the cable packing support, Further comprising an insulator packing member hermetically provided between the support portions, wherein the cable packing member and the insulator packing member are made of a silicone material.
KR1020150050184A 2015-04-09 2015-04-09 Insulating cover for bushing terminal KR101693021B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150050184A KR101693021B1 (en) 2015-04-09 2015-04-09 Insulating cover for bushing terminal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150050184A KR101693021B1 (en) 2015-04-09 2015-04-09 Insulating cover for bushing terminal

Publications (2)

Publication Number Publication Date
KR20160121645A true KR20160121645A (en) 2016-10-20
KR101693021B1 KR101693021B1 (en) 2017-01-05

Family

ID=57251163

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150050184A KR101693021B1 (en) 2015-04-09 2015-04-09 Insulating cover for bushing terminal

Country Status (1)

Country Link
KR (1) KR101693021B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180076697A (en) * 2016-12-28 2018-07-06 (주)대림엠이씨 Insulating cover for bushing terminal
WO2019101460A1 (en) * 2017-11-21 2019-05-31 Siemens Aktiengesellschaft Winding unit having taps formed on the support
KR20210149488A (en) * 2020-06-02 2021-12-09 한국전력공사 Busing cover for indirect live-line work and transfomer having the same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR950004947Y1 (en) * 1993-02-08 1995-06-19 김성기 Bussing cover
JPH0872939A (en) * 1994-09-06 1996-03-19 Chubu Electric Power Co Inc Protective cover for insulator
KR200384366Y1 (en) * 2005-02-22 2005-05-13 한국전기안전공사 An insulating cover
KR20100007831U (en) * 2009-01-29 2010-08-06 기림공업주식회사 cover for connection terminal of insulator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR950004947Y1 (en) * 1993-02-08 1995-06-19 김성기 Bussing cover
JPH0872939A (en) * 1994-09-06 1996-03-19 Chubu Electric Power Co Inc Protective cover for insulator
KR200384366Y1 (en) * 2005-02-22 2005-05-13 한국전기안전공사 An insulating cover
KR20100007831U (en) * 2009-01-29 2010-08-06 기림공업주식회사 cover for connection terminal of insulator

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180076697A (en) * 2016-12-28 2018-07-06 (주)대림엠이씨 Insulating cover for bushing terminal
WO2019101460A1 (en) * 2017-11-21 2019-05-31 Siemens Aktiengesellschaft Winding unit having taps formed on the support
US11557424B2 (en) 2017-11-21 2023-01-17 Siemens Aktiengesellschaft Winding unit having taps configured on the support
KR20210149488A (en) * 2020-06-02 2021-12-09 한국전력공사 Busing cover for indirect live-line work and transfomer having the same
KR20210149643A (en) * 2020-06-02 2021-12-09 한국전력공사 Busing cover for indirect live-line work and transfomer having the same

Also Published As

Publication number Publication date
KR101693021B1 (en) 2017-01-05

Similar Documents

Publication Publication Date Title
KR101899121B1 (en) Insulating cover for bushing terminal
KR101693021B1 (en) Insulating cover for bushing terminal
KR200451085Y1 (en) cover for connection terminal of insulator
KR20130036230A (en) Electrically insulating cage nut
US20150114950A1 (en) Heating device
KR200384366Y1 (en) An insulating cover
US20100200292A1 (en) Secondary cap
CN104934274B (en) Fuse insulation supporter frame with pre-molded full skirt
US10614981B2 (en) Pole component assembly for circuit breaker
JP6316335B2 (en) Gas insulated surge arrester
KR102432842B1 (en) Bushing with built-in shield for electric field relaxation
US20200021053A1 (en) Power connector
CN107070067B (en) Motor outgoing line protection structure
KR20190081787A (en) High voltage junction block
US20090194399A1 (en) Pressure switch structure
JPH04249816A (en) Lightening insulator
KR20090009891U (en) Lightening rod with voltage lead wire in one body
CN211980308U (en) High-safety moisture-proof direct-current pole wire lightning arrester
US20150062773A1 (en) Fast-mounting capacitor
KR102157842B1 (en) Structure for insulting protection of suspension insulator
RU168416U1 (en) DEVICE FOR PROTECTING 6-35 kV ELECTRIC TRANSMISSION LINES FROM THE BIRD'S LIFE
RU2636932C1 (en) DEVICE FOR PROTECTION OF BIRDS FROM ELECTRIC SHOCK IN OVERHEAD POWER LINES OF 6-35 kV
CN205566949U (en) Heat dissipation electrical protection cover and electric elements
CN104517749A (en) Rainproof insulating rod and brake pull-rod with same
CN204261816U (en) High potential assembly and air purifier

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20191212

Year of fee payment: 4