CN110911137A - Voltage transformer protective cover capable of live working and insulating clamp - Google Patents
Voltage transformer protective cover capable of live working and insulating clamp Download PDFInfo
- Publication number
- CN110911137A CN110911137A CN201911131802.5A CN201911131802A CN110911137A CN 110911137 A CN110911137 A CN 110911137A CN 201911131802 A CN201911131802 A CN 201911131802A CN 110911137 A CN110911137 A CN 110911137A
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- Prior art keywords
- protective cover
- voltage transformer
- slit
- main body
- protective
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- 230000001681 protective effect Effects 0.000 title claims abstract description 115
- 238000009413 insulation Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 4
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 239000011152 fibreglass Substances 0.000 claims 1
- 239000004945 silicone rubber Substances 0.000 claims 1
- 238000009434 installation Methods 0.000 description 4
- 241001465754 Metazoa Species 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 241000699670 Mus sp. Species 0.000 description 2
- 230000009194 climbing Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 241000699666 Mus <mouse, genus> Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 210000003811 finger Anatomy 0.000 description 1
- 210000004247 hand Anatomy 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Images
Classifications
-
- 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
-
- 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
- H01B17/38—Fittings, e.g. caps; Fastenings therefor
- H01B17/40—Cementless fittings
-
- 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
- H01B17/56—Insulating bodies
-
- 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
- H01B17/56—Insulating bodies
- H01B17/58—Tubes, sleeves, beads, or bobbins through which the conductor passes
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulating Bodies (AREA)
Abstract
The invention discloses a voltage transformer protective cover capable of live working, which comprises a protective cover main body with a downward opening and capable of being sleeved into a containing cavity of a voltage transformer, and a protective cylinder capable of wrapping a voltage transformer cable, horizontally arranged on the left side of the protective cover main body and integrally formed with the protective cover main body; the top and the bottom of the protective cylinder are provided with a first slit along the axial direction, the slit is gradually enlarged from left to right, and the top of the protective cylinder main body is provided with a second slit coplanar with the first slit; a fourth slit connected with the third slit is formed in the left side of the protective cover main body; phase line identification piece can be dismantled and be equipped with at protection casing main part top. The insulating clamp comprises a clamping part and a locking part which can be detachably connected with the insulating rod; the clamping part is provided with two semicircular clamping grooves suitable for inserting the protective cylinder; the clamping part is provided with a through hole which is positioned between the two clamping grooves and is suitable for a cable to pass through; the bottom side of the clamping part is provided with a cable opening suitable for the cable to move to the through hole; the locking part is arranged on the left side of the clamping part and is fixed on the clamping part.
Description
Technical Field
The invention belongs to the technical field of insulation protection of power equipment, and particularly relates to a voltage transformer protective cover capable of live working and an insulation clamp.
Background
A voltage transformer (PT for short) is an instrument for transforming voltage on a line, similar to a transformer. The purpose of voltage conversion of the transformer is to transmit electric energy, the capacity is large, and kilovolt-ampere or megavolt-ampere is generally taken as a calculation unit; the voltage transformer is mainly used for supplying power to a measuring instrument and a relay protection device, measuring the voltage, power and electric energy of a line, or protecting valuable equipment, a motor and a transformer in the line when the line fails, so that the capacity of the voltage transformer is small, generally only a few volt-amperes, dozens of volt-amperes, and the maximum voltage of the voltage transformer does not exceed one thousand volt-amperes.
At present, medium voltage towers have more unexpected power failure faults, including short circuit faults caused by climbing of small animals such as mice and the like; a small animal, upon contacting both phase lines simultaneously, creates a butt short resulting in a line fault.
It is seen that improvements and enhancements to the prior art are needed.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a voltage transformer protective cover capable of live working, which has a unique and novel structure, is easy and convenient to install, can work at any time and any place, does not need a lifting platform, a supplementary power supply and a large-scale vehicle for live operation, and can be installed on a voltage transformer in a live state.
In order to achieve one of the purposes, the invention adopts the following technical scheme:
a voltage transformer protective cover capable of working in a hot-line mode comprises a protective cover main body and a protective cylinder, wherein the protective cylinder is used for wrapping a voltage transformer cable and is integrally formed with the protective cover main body; the protective cover main body is provided with an accommodating cavity with a downward opening and capable of being sleeved with a voltage transformer; the protective cylinder is horizontally arranged on the left side of the protective cover main body; the top of the protective cylinder is provided with a first slit along the axial direction of the protective cylinder, and the top of the protective cover main body is correspondingly provided with a second slit coplanar with the first slit; the bottom of the protective cylinder is provided with a third slit along the axial direction, the slit gradually enlarges from left to right, and the left side of the protective cylinder main body is correspondingly provided with a fourth slit connected with the third slit; the top of protection casing main part can be dismantled and be connected with phase line sign spare.
In the live-wire voltage transformer protective cover, the protective cover main body and the protective cylinder are made of transparent PC materials.
In the voltage transformer protective cover capable of working in a hot-line manner, an arc-shaped through hole is formed in the top of the protective cover main body; the bottom of the phase line identification piece is provided with a clamping block clamped with the arc-shaped through hole; from overlooking, the phase line identification piece is semicircular.
In the voltage transformer protective cover capable of working in a hot-line mode, the phase line identification piece is formed by pressing silicon rubber.
In the voltage transformer protective cover capable of working in a hot-line mode, the bottom of the protective cover main body extends outwards to form a skirt edge which inclines downwards.
In addition, the invention also aims to provide an insulation clamp which is ingenious in design, simple to use and used for matching with the live installation work of the voltage transformer protective cover.
In order to achieve the second purpose, the invention adopts the following technical scheme:
an insulation clamp comprises a clamping part for clamping the voltage transformer protective cover capable of live working and a locking part detachably connected with an insulation rod; the clamping part is provided with two semicircular clamping grooves suitable for inserting the protective cylinder; the clamping part is provided with a through hole which is positioned between the two clamping grooves and is suitable for a voltage transformer cable to pass through; the bottom side of the clamping part is provided with a cable opening suitable for the voltage transformer cable to move to the through hole; the locking part is arranged on the left side of the clamping part and is fixed on the clamping part.
In the insulating fixture, the clamping parts are respectively provided with supporting bars for clamping the protective cylinder at the outer sides of the clamping grooves.
In the insulating clamp, the locking part and the clamping part are integrally formed.
In the insulating clamp, the insulating clamp is made of glass fiber.
Has the advantages that:
the invention provides a voltage transformer protective cover capable of live working, which is unique and novel in structure, simple and convenient to install, capable of working at any time and any place, free of a lifting platform, supplementary power supply and live operation large-scale vehicles and capable of being installed on a voltage transformer in a live state.
In addition, the invention also provides an insulating clamp which is ingenious in design and used for being matched with the installation work of the voltage transformer protective cover, clamping the voltage transformer protective cover and installing the voltage transformer protective cover on a voltage transformer in a charged state.
Drawings
Fig. 1 is a first perspective view of a structure of a voltage transformer protective cover capable of live working according to the present invention.
Fig. 2 is a perspective view of the structure of the voltage transformer protective cover capable of working with electricity according to the present invention.
Fig. 3 is a first perspective view of the insulating clamp according to the present invention.
Fig. 4 is a perspective view of the insulating clamp according to the present invention.
Fig. 5 is a top view of an insulating fixture provided by the present invention.
Fig. 6 is a perspective view of a phase line identifier in the protective cover for a voltage transformer capable of hot-line work according to the present invention.
Detailed Description
The invention provides a voltage transformer protective cover capable of live working and an insulating clamp, and in order to make the purpose, the technical scheme and the effect of the invention clearer and clearer, the invention is further described in detail by referring to the attached drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, 2 and 6, the present invention provides a voltage transformer shield capable of performing hot-line work, which includes a shield main body 1, a shield cylinder 2 for wrapping a voltage transformer cable and integrally formed with the shield main body 1; the protective cover main body 1 is provided with an accommodating cavity (not marked in the figure) with a downward opening and capable of being sleeved in a voltage transformer; the protective cylinder 2 is horizontally arranged on the left side of the protective cover main body 1; the top of the protection cylinder 2 is provided with a first slit 21 along the axial direction, and the top of the protection cover main body 1 is correspondingly provided with a second slit 11 coplanar with the first slit 21; the bottom of the protective cylinder 2 is provided with a third open seam 22 along the axial direction, the seam opening of which is enlarged from left to right, and the left side of the protective cylinder body 1 is correspondingly provided with a fourth open seam 14 connected with the third open seam 22.
In this embodiment, the accommodating cavity is cylindrical, and the shield main body is cylindrical; the thickness of the protective cover main body is 2mm, the inner diameter 2 is 74mm, and the protective cover main body can be tightly buckled (or sleeved) on PT equipment; the internal diameter of the protective barrel is 34mm, so that the PT wire outlet is convenient to route.
The slits of the second slit 11 and the first slit 21 are 2mm wide. The slit of the fourth slit 14 is unchanged, the slit of the third slit 22 gradually increases from left to right (i.e. from the outer side to the inner side of the protective cylinder) and gradually increases from 2mm to 7mm, and the slit of the fourth slit 14 is 7mm large, so that the voltage transformer cable can be ensured to move from bottom to top to the inner cavity of the protective cylinder after the protective cylinder is broken. When the protective cylinder is forcibly opened towards two sides, a large-angle opening can be formed, and a large opening can be formed at the bottom sides of the protective cylinder and the protective main body, so that a cable on the PT device can be conveniently buckled.
In addition, the top of the protective cover main body 1 is detachably connected with a phase line identification part 4. Specifically, an arc-shaped through hole 12 is formed in the top of the protective cover main body 1; the bottom of the phase line identification part 4 is provided with a clamping block 41 clamped with the arc-shaped through hole 12; the clamping blocks 41 are arc-shaped.
The phase marker 4 is semicircular in plan view.
The phase line identification part 4 is formed by pressing silicon rubber and has three colors of yellow, green and red respectively, so that operation and maintenance workers can distinguish the phase line of the voltage transformer cable conveniently, and the overall operation and maintenance efficiency is improved. The phase line identification piece 4 is directly inserted into the arc-shaped through holes 12 arranged on the front side and the rear side of the protective cover main body 1 through the clamping blocks 41 arranged on the phase line identification piece, and the phase line identification piece is connected with the protective cover main body in a detachable mode.
In the present embodiment, the arc-shaped through holes 12 are provided at the top of the shield main body 1 symmetrically with respect to the second slit 11. Likewise, the phase identifier 4 is arranged symmetrically with respect to the second slot 11. Install two phase line sign pieces in the arc through-hole 12 on the protection casing main part 1 before PT equipment at this protection casing to reach firm state, combine together with this protection casing in order to form the phase line sign of pylon, not only satisfy the phase line sign, but also do not influence a protection section of thick bamboo, protection casing main part and break the effect off with the fingers and thumb to both sides.
The protective cover main body 1 is formed by injection molding of transparent PC materials imported from abroad.
As shown in fig. 1 and 2, a skirt 13 is formed at the bottom of the shield body 1 and extends outward and is inclined downward. When the protective cover main body 1 is buckled into (or sleeved into) the PT equipment, the skirt 13 is stably contacted with the composite material part of the PT equipment, the friction force is enhanced, the composite material part is not easily blown by wind, and the composite material part is protected from rainwater.
The protective cover of the voltage transformer provided by the invention adopts a wrapping type design, can resist 38KV high voltage and 750 ℃ high temperature, meets the requirement of live installation operation, and has a service life as long as 8-10 years. Wrap up voltage transformer through the protection casing main part, wrap up the cable on the voltage transformer through the protective barrel, accomplish completely isolated, avoid the mouse climbing and the short circuit that causes. If a fire accident happens, the protective cover has certain burning and non-ignition burning phenomena, and secondary damage to circuits and other equipment is avoided.
In addition, as shown in fig. 1, 3, 4 and 5, the present invention further provides an insulation clamp, which comprises a clamping portion 3 for clamping the voltage transformer protective cover capable of live working, and a locking portion 34 detachably connected with the existing insulation rod; the clamping part 3 is provided with two semicircular clamping grooves 31 suitable for the protective barrel 2 to be inserted; the clamping part 3 is provided with a through hole 33 which is positioned between the two clamping grooves 31 and is suitable for a voltage transformer cable to pass through; the clamping part 3 is provided with a cable opening (not marked in the figure) at the bottom side thereof, wherein the cable opening is suitable for the voltage transformer cable to move to the through hole 33; the locking portion 34 is disposed on the left side of the holding portion 3 and fixed to the holding portion 3.
As shown in fig. 4 and 5, when the insulating clamp is mounted on the insulating rod, the insulating rod is inserted through the opening 35 surrounded by the locking portion 34, the position of the insulating clamp relative to the insulating rod is adjusted, and then the insulating clamp is tightly fixed on the insulating rod by locking the insulating clamp through the locking hole formed at the end of the locking portion 34 with an insulating screw.
The insulating clamp provided by the invention adopts an integrated design, and the locking part 34 and the clamping part 3 are integrally formed. The insulating clamp is made of glass fiber materials in a printing mode, does not need to be disassembled, and has the advantages of being high in strength, hardness and voltage resistance.
As shown in fig. 1 and 3, the holding portions 3 are respectively provided with support bars 32 for holding the protection tube 2 at the outer sides of the locking grooves 31. When the protective cylinder 2 is broken along the first slit 21 and the third slit 22 and then divided into two parts, and the two parts are inserted into the slots 31, the protective cylinder is clamped by the two supporting bars 32, so that the overall stability is enhanced, and the protective cylinder is prevented from shaking and drooping.
As shown in fig. 3 and 5, in the present embodiment, the clamping portion 3 is in a "C" shape, and is fixed to the latching portion 34 by a connecting portion, and the clamping portion 3, the connecting portion, and the latching portion 34 are integrally formed. The clamping grooves 31 and the supporting strips 32 are respectively and symmetrically arranged, and the extension lines of the two supporting strips 32 form an included angle.
The voltage transformer protective cover provided by the invention is ingenious in structural design, when in use, the protective barrel 2 is broken along the first slit 21 to two sides to form a large-angle opening, then the large-angle opening is correspondingly inserted into the clamping groove 31 of the insulating clamp, and meanwhile, the protective barrel is clamped by the two support bars 32, so that the voltage transformer protective cover is completely clamped, and the voltage transformer protective cover cannot shake or sag.
Then, the insulating clamp is fixedly connected to the existing insulating rod through the locking part 34, a worker wears an insulating glove, hands the insulating rod after wearing the insulating boot to send the voltage transformer protective cover to the tower frame, the protective cover in an opening state penetrates through a cable on the PT equipment, namely the cable enters an inner cavity of the protective cylinder from the outer side when the protective cover moves from top to bottom, and meanwhile, the cable passes through a cable opening of the insulating clamp and enters the through hole 33 of the clamping part 3, so that the cable is wrapped by the protective cylinder when the protective cylinder is closed; and then the protective cover is lightly placed above the voltage transformer and is sleeved with the voltage transformer downwards.
When the protective cover is completely attached to the voltage transformer, the insulating rod is slightly pulled outwards to enable the protective cover to be separated from the insulating clamp, the protective cover is closed due to the fact that the original state of the protective cover needs to be recovered, the voltage transformer and the cable are wrapped, isolation live-line work of the protective cover is completed, the live-line operation vehicle does not need to be utilized to conduct circuit power-off and power-supply supplement operation, working time is greatly saved, and overall working efficiency is improved.
The voltage transformer protective cover and the insulating clamp provided by the invention can be used in cooperation with the insulating rod and can be widely applied to a 10KV overhead line system.
In conclusion, the invention provides the voltage transformer protective cover capable of live working, which is unique and novel in structure, simple and convenient to install, capable of working at any time and any place, free of a lifting platform, supplementary power supply and a hot-line operation large-scale vehicle, and capable of being installed on the voltage transformer in a live state.
In addition, the invention also provides an insulating clamp which is ingenious in design and used for being matched with the installation work of the voltage transformer protective cover, clamping the voltage transformer protective cover and installing the voltage transformer protective cover on a voltage transformer in a charged state.
At present, the conditions of accidental faults of a tower line caused by small animals including mice are more and more, and power failure plans of power grid companies are more and more strict and cautious, however, the voltage transformer protective cover and the insulating clamp which can be in live working provided by the invention are matched with the insulating rod, the conditions can be effectively controlled, the live working can be carried out without utilizing a live operating vehicle to carry out circuit power failure and power supply supplement operation, the working time is greatly saved, the protective cover can be directly arranged on the voltage transformer, standard insulating gloves and insulating shoes can be worn during the working, the secondary protection effect is achieved, the complete insulation is realized through multiple protection, the safety guarantee is provided for workers, the working time is greatly reduced, and the overall working efficiency is improved to a greater extent.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.
Claims (9)
1. A voltage transformer protective cover capable of working in a hot-line manner is characterized by comprising a protective cover main body and a protective cylinder, wherein the protective cylinder is used for wrapping a voltage transformer cable and is integrally formed with the protective cover main body; the protective cover main body is provided with an accommodating cavity with a downward opening and capable of being sleeved with a voltage transformer; the protective cylinder is horizontally arranged on the left side of the protective cover main body; the top of the protective cylinder is provided with a first slit along the axial direction of the protective cylinder, and the top of the protective cover main body is correspondingly provided with a second slit coplanar with the first slit; the bottom of the protective cylinder is provided with a third slit along the axial direction, the slit gradually enlarges from left to right, and the left side of the protective cylinder main body is correspondingly provided with a fourth slit connected with the third slit; the top of protection casing main part can be dismantled and be connected with phase line sign spare.
2. The live operable voltage transformer shield according to claim 1, wherein said shield body and shield cylinder are made of transparent PC material.
3. The voltage transformer protective cover capable of working with electricity according to claim 1, wherein an arc-shaped through hole is formed in the top of the protective cover main body; the bottom of the phase line identification piece is provided with a clamping block clamped with the arc-shaped through hole; from overlooking, the phase line identification piece is semicircular.
4. The live working potential transformer shield according to claim 3, wherein the phase line identifier is stamped from silicone rubber.
5. The live working voltage transformer shield according to claim 1, wherein the bottom of the shield body is formed with a skirt extending outwardly in an inclined downward direction.
6. An insulating clamp, characterized by comprising a clamping part for clamping the live-working voltage transformer protective cover according to any one of claims 1 to 5, and a locking part detachably connected with an insulating rod; the clamping part is provided with two semicircular clamping grooves suitable for inserting the protective cylinder; the clamping part is provided with a through hole which is positioned between the two clamping grooves and is suitable for a voltage transformer cable to pass through; the bottom side of the clamping part is provided with a cable opening suitable for the voltage transformer cable to move to the through hole; the locking part is arranged on the left side of the clamping part and is fixed on the clamping part.
7. The insulation clamp according to claim 6, wherein the holding portions are respectively provided with a support bar for holding the shielding cylinder at an outer side of the catching groove.
8. The insulation clamp of claim 6, wherein the locking portion is integrally formed with the clamping portion.
9. The insulation clamp of claim 8, wherein the insulation clamp is made of fiberglass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911131802.5A CN110911137A (en) | 2019-11-19 | 2019-11-19 | Voltage transformer protective cover capable of live working and insulating clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911131802.5A CN110911137A (en) | 2019-11-19 | 2019-11-19 | Voltage transformer protective cover capable of live working and insulating clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110911137A true CN110911137A (en) | 2020-03-24 |
Family
ID=69817918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911131802.5A Pending CN110911137A (en) | 2019-11-19 | 2019-11-19 | Voltage transformer protective cover capable of live working and insulating clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110911137A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113207868A (en) * | 2021-05-19 | 2021-08-06 | 广东电网有限责任公司 | Self-locking high-pressure side isolation device and use tool thereof |
| CN113270253A (en) * | 2021-05-19 | 2021-08-17 | 广东电网有限责任公司 | Buckle formula transformer protection casing and operation tool thereof |
| CN114501895A (en) * | 2022-02-17 | 2022-05-13 | 广东粤艺电力科技有限公司 | Protective cover |
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| JP2007203756A (en) * | 2006-01-30 | 2007-08-16 | Tokai Rubber Ind Ltd | Stabilizer bush |
| JP2008092664A (en) * | 2006-10-02 | 2008-04-17 | Tokyo Electric Power Co Inc:The | Structure and method for preventing aluminum collar for electric wire holding spacer from being dislocated |
| CN207038318U (en) * | 2017-07-25 | 2018-02-23 | 山东百川电气科技有限公司 | A kind of voltage transformer silicon rubber protective cover |
| CN208655356U (en) * | 2018-09-14 | 2019-03-26 | 深圳市天为科技有限公司 | A kind of voltage transformer shield |
| US20190279535A1 (en) * | 2018-03-06 | 2019-09-12 | Stacey Eve Sartena | Decoration and Identification Device for Stemware |
| JP2019176581A (en) * | 2018-03-27 | 2019-10-10 | 中国電力株式会社 | Cover attachment jig |
| CN210956413U (en) * | 2019-11-19 | 2020-07-07 | 佛山市南旭科技有限公司 | Voltage transformer protective cover capable of live working and insulating clamp |
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2019
- 2019-11-19 CN CN201911131802.5A patent/CN110911137A/en active Pending
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| JP2007203756A (en) * | 2006-01-30 | 2007-08-16 | Tokai Rubber Ind Ltd | Stabilizer bush |
| JP2008092664A (en) * | 2006-10-02 | 2008-04-17 | Tokyo Electric Power Co Inc:The | Structure and method for preventing aluminum collar for electric wire holding spacer from being dislocated |
| CN207038318U (en) * | 2017-07-25 | 2018-02-23 | 山东百川电气科技有限公司 | A kind of voltage transformer silicon rubber protective cover |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113207868A (en) * | 2021-05-19 | 2021-08-06 | 广东电网有限责任公司 | Self-locking high-pressure side isolation device and use tool thereof |
| CN113270253A (en) * | 2021-05-19 | 2021-08-17 | 广东电网有限责任公司 | Buckle formula transformer protection casing and operation tool thereof |
| CN113270253B (en) * | 2021-05-19 | 2022-07-19 | 广东电网有限责任公司 | Buckle formula transformer protection casing and operation tool thereof |
| CN114501895A (en) * | 2022-02-17 | 2022-05-13 | 广东粤艺电力科技有限公司 | Protective cover |
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Application publication date: 20200324 Assignee: Foshan Huayi Technology Co.,Ltd. Assignor: Foshan Nanxu Technology Co.,Ltd. Contract record no.: X2022990000213 Denomination of invention: Voltage transformer protective cover and insulating clamp capable of live working License type: Common License Record date: 20220418 |
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