CN207541103U - A kind of current transformer tests auxiliary tool - Google Patents

A kind of current transformer tests auxiliary tool Download PDF

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Publication number
CN207541103U
CN207541103U CN201721626627.3U CN201721626627U CN207541103U CN 207541103 U CN207541103 U CN 207541103U CN 201721626627 U CN201721626627 U CN 201721626627U CN 207541103 U CN207541103 U CN 207541103U
Authority
CN
China
Prior art keywords
grip block
bar
current transformer
straight
pedestal
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn - After Issue
Application number
CN201721626627.3U
Other languages
Chinese (zh)
Inventor
陈江涛
刘淼淼
杨哲
付宾
雷明远
胡保建
杨琰冲
马少辰
王润妮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SANMENXIA POWER SUPPLY Co OF STATE GRID HENAN ELECTRIC POWER Co
State Grid Corp of China SGCC
Original Assignee
SANMENXIA POWER SUPPLY Co OF STATE GRID HENAN ELECTRIC POWER Co
State Grid Corp of China SGCC
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 SANMENXIA POWER SUPPLY Co OF STATE GRID HENAN ELECTRIC POWER Co, State Grid Corp of China SGCC filed Critical SANMENXIA POWER SUPPLY Co OF STATE GRID HENAN ELECTRIC POWER Co
Priority to CN201721626627.3U priority Critical patent/CN207541103U/en
Application granted granted Critical
Publication of CN207541103U publication Critical patent/CN207541103U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses current transformers to test auxiliary tool,Including insulating bar,Clamping device is connected on the top of insulating bar,The clamping device packet is connected to the pedestal on insulating bar top,The first grip block is integrally formed on pedestal,The second grip block is hinged on pedestal,First grip block and the interaction of the second grip block are clamped on aluminum stranded conductor,Space between first grip block and the second grip block is interior,The first straight-bar is hinged in the first grip block medial surface bottom,It is equipped on the second grip block for across the through-hole of the first straight-bar,First straight-bar passes through through-hole and is slidably connected with the second grip block,It is furnished with wing nut on the first straight-bar,Wing nut, which is located on the outside of the second grip block and the first straight-bar between wing nut and the second grip block lateral surface, is arranged with the first compression spring,Positioning screw is threaded on the bottom of the first grip block,The tool is convenient for assembly and dismantles,It is convenient for carrying and uses,Substantially increase test efficiency and personnel safety.

Description

A kind of current transformer tests auxiliary tool
Technical field
The utility model belongs to technical field of electric power, more particularly to a kind of current transformer experiment auxiliary tool.
Background technology
Current transformer(Current Transformer, abbreviation CT):According to electromagnetic induction principle by electric system high pressure The high current of side is transformed to the low current of low-pressure side, is used for relay protection, automatic device and measuring instrumentss, realizes high and low pressure Equipment blocking, and obtain high-pressure side loop current with enabling low pressure side apparatus safety and precise;CT is tested:Verificating current mutual inductor No-load voltage ratio, polarity, C-V characteristic etc. whether be consistent with manufacture nameplate parameter or service requirement, its correctness is related to secondary Correctness, electric energy measurement, the accuracy of metering and the reliability of protective device action of circuit connection, to the peace of electric system Entirely, stablize, economical operation has great significance.
At present, 110 ~ 220kV current transformers are mostly porcelain knob in electric system, and mounting height is high, GB50150-2016 《Electrical equipment commissioning test regulation》Etc. regulations examine the new installation of current transformer, running periodic inspection and supplement are examined It tests and all provides, specify the contents of a project, criterion of acceptability and the points for attention of inspection.It is needed during current transformer check test Test apparatus with its both sides aluminum stranded conductor is connect, is usually that personnel are ascended a height by insulating ladder or grasped by means of Liftable type at present Make platform or bucket arm vehicle is reached at experiment clamp, testing wire clamp is installed in current transformer both sides aluminum stranded conductor, both operations All there are the problems such as security risk is big, the activity duration is long, and efficiency is low, and labor intensity is big for mode.
Utility model content
The utility model aim is to propose a kind of current transformer to solve above-mentioned problems of the prior art Test auxiliary tool,
The utility model is adopted the technical scheme that in order to achieve the above objectives:A kind of current transformer tests backman Tool, including insulating bar, clamping device is connected on the top of insulating bar, the clamping device packet is connected to the bottom on insulating bar top Seat, the first grip block is integrally formed on pedestal, the second grip block, the first grip block and the second grip block are hinged on pedestal Interaction is clamped on aluminum stranded conductor, and the space between the first grip block and the second grip block is interior, on the inside of the first grip block Face bottom is hinged with the first straight-bar, is equipped on the second grip block for across the through-hole of the first straight-bar, the first straight-bar to pass through logical Hole and be slidably connected with the second grip block, equipped with wing nut on the first straight-bar, wing nut be located at the second grip block outside The first compression spring is arranged on side and the first straight-bar between wing nut and the second grip block lateral surface, in the first grip block Positioning screw is threaded on bottom, the inner end of positioning screw withstands on the medial surface of the second grip block, is equipped on pedestal For the binding post of joint test line, first grip block, pedestal are made by conductive material.
Preferably, equipped with pressure tongue, the pressure tongue top and the first grip block medial surface on the medial surface of the first grip block It is hinged, it presses and the second compression spring is equipped between the bottom end of tongue and the first grip block medial surface.
Preferably, it is fixed with induction type electric alarm on the first grip block or the second grip block lateral surface.
Preferably, the dry sanding paper for removing aluminum stranded conductor surface oxide layer is equipped on the medial surface of the second grip block.
Preferably, upper installation seam and lower installation seam are equipped on the second grip block, is leaned on the lateral surface of the second grip block Upper junction plate is integrally formed at nearly upper installation seam, is integrally formed with lower connecting plate at lower installation seam, the upper end of dry sanding paper passes through Upper installation seam is clamped in by clip on upper junction plate, and the lower end of dry sanding paper passes through lower installation seam to be clamped in lower connection by clip On plate.
Preferably, the insulating bar is multistage retractable rod.
Preferably, triangular support bracket is installed in the bottom end of insulating bar.
Preferably, the pedestal is threadedly coupled with insulating bar.
It is had the beneficial effect that possessed by the utility model:Personnel may stand on ground can be carried out CT experiment clamp line Work, avoids ascending stair high-rise working and mistakenly entering into charged battery limits, reduces security risk;The present apparatus clamps the aluminum stranded conductor time It is short, it greatly improves work efficiency;The adjustable in length of insulating bar works suitable for all 220/110kV CT testing grounds.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
Specific embodiment
The utility model is further described below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of current transformer experiment auxiliary tool, including insulating bar 14, pacifies in the bottom end of insulating bar 14 Equipped with triangular support bracket 15, clamping device is connected on the top of insulating bar 14, the clamping device packet is connected to insulating bar 14 The pedestal 13 on top, the pedestal 13 are threadedly coupled with insulating bar 14, the first grip block 5 are integrally formed on pedestal 13, the bottom of at The second grip block 8 is hinged on seat 13, the first grip block 5 and the interaction of the second grip block 8 are clamped on aluminum stranded conductor, the first folder It is interior to hold the space between 5 and second grip block 8 of plate, and the first straight-bar 12 is hinged in 5 medial surface bottom of the first grip block, Two grip blocks 8 are equipped with for across the through-hole of the first straight-bar 12, the first straight-bar 12 to pass through through-hole and slided with the second grip block 8 Connection is located at the outside of the second grip block 8 and in wing nut on the first straight-bar 12 equipped with wing nut 10, wing nut 10 The first compression spring 11 is arranged on the first straight-bar 12 between 10 and 8 lateral surface of the second grip block, on the bottom of the first grip block 5 Positioning screw 3 is threaded with, the inner end of positioning screw 3 is withstood on the medial surface of the second grip block 8,13 or first on pedestal Grip block 5 is equipped with the binding post 2 for joint test line 1, and first grip block 5, pedestal 13 are made by conductive material.
In order to further increase to the clamping action of aluminum stranded conductor and be touched from tap, match on the medial surface of the first grip block 5 Have pressure tongue 9, it is described pressure 9 top of tongue be hinged with 5 medial surface of the first grip block, press tongue 9 bottom end and 5 medial surface of the first grip block it Between be equipped with the second compression spring 4.
In order to prevent maloperation and enter live zone and damage, in 8 lateral surface of the first grip block 5 or the second grip block On be fixed with induction type electric alarm 6.
The dry sanding paper 7 for removing aluminum stranded conductor surface oxide layer is equipped on the medial surface of the second grip block 8.It is further Dry sanding paper 7 is conveniently replaceable, upper installation seam and lower installation seam are equipped on the second grip block 8, in the lateral surface of the second grip block 8 It is upper that upper junction plate is integrally formed at upper installation seam, is integrally formed with lower connecting plate, the upper end of dry sanding paper 7 at lower installation seam It is clamped on upper junction plate by clip across upper installation seam, the lower end of dry sanding paper 8 passes through lower installation seam to be clamped in by clip On lower connecting plate.
In order to adapt to different height, the insulating bar 14 is multistage retractable rod, to adjust the height of clamping device.
When the utility model is used, wing nut 10 is suitably rotated according to the diameter of aluminum stranded conductor first to determine the second folder It holds the maximum subtended angle of plate 8, then appropriate rotational positioning screw rod 3 and appropriate angle is opened to facilitate to aluminium with the second grip block 8 of guarantee Twisted wire clamping position is pre-positioned, and is held insulating bar 14, is lifted clamping device, the aluminum stranded conductor of current transformer side is placed In the subtended angle of the first grip block 5 or the second grip block 8, if necessary to remove the oxide layer on surface, insulating bar 14 is twisted back and forth It is removed by dry sanding paper 7, continues to move up clamping device under the collective effect of the first compression spring 11 and the second compression spring 4, clamped On aluminum stranded conductor, the height of insulating bar 14 is adjusted, triangular support bracket 15 supports on the ground;The present apparatus is equally clamped in electric current On the aluminum stranded conductor of mutual inductor opposite side, test wire 1 is connected on test apparatus.
Finally it should be noted that:Above example is only to illustrate the technical solution of the utility model, rather than its limitations; Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: It still can modify to the technical solution recorded in foregoing embodiments or which part technical characteristic is carried out etc. With replacement, but these modifications or replacement, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution The spirit and scope of scheme.

Claims (8)

1. a kind of current transformer tests auxiliary tool, which is characterized in that including insulating bar, folder is connected on the top of insulating bar Mechanism is held, the clamping device packet is connected to the pedestal on insulating bar top, the first grip block is integrally formed on pedestal, in pedestal On be hinged with the second grip block, the first grip block and the interaction of the second grip block are clamped on aluminum stranded conductor, the first grip block and Space between second grip block is interior, the first straight-bar is hinged in the first grip block medial surface bottom, on the second grip block Equipped with for across the through-hole of the first straight-bar, the first straight-bar to pass through through-hole and is slidably connected with the second grip block, in the first straight-bar Upper to be furnished with wing nut, wing nut is located at the outside of the second grip block and between wing nut and the second grip block lateral surface The first straight-bar on be arranged with the first compression spring, positioning screw is threaded on the bottom of the first grip block, positioning screw Inner end is withstood on the medial surface of the second grip block, and the binding post for joint test line, first clamping are equipped on pedestal Plate, pedestal are made by conductive material.
2. current transformer according to claim 1 tests auxiliary tool, which is characterized in that in the inside of the first grip block It is hinged on face equipped with pressure tongue, the pressure tongue top with the first grip block medial surface, presses bottom end and the first grip block medial surface of tongue Between be equipped with the second compression spring.
3. current transformer according to claim 2 tests auxiliary tool, which is characterized in that in the first grip block or second Induction type electric alarm is fixed on grip block lateral surface.
4. current transformer according to claim 3 tests auxiliary tool, which is characterized in that in the inside of the second grip block Face is equipped with the dry sanding paper for removing aluminum stranded conductor surface oxide layer.
5. current transformer according to claim 4 tests auxiliary tool, which is characterized in that is equipped on the second grip block Upper installation seam and lower installation seam, upper junction plate, close is integrally formed on the lateral surface of the second grip block at upper installation seam Lower connecting plate is integrally formed at lower installation seam, the upper end of dry sanding paper passes through upper installation seam to be clamped on upper junction plate by clip, The lower end of dry sanding paper passes through lower installation seam to be clamped on lower connecting plate by clip.
6. current transformer according to any one of claims 1 to 5 tests auxiliary tool, which is characterized in that the insulation Bar is multistage retractable rod.
7. current transformer according to claim 6 tests auxiliary tool, which is characterized in that is installed in the bottom end of insulating bar There is triangular support bracket.
8. current transformer according to claim 6 tests auxiliary tool, which is characterized in that the pedestal and insulating bar spiral shell Line connects.
CN201721626627.3U 2017-11-29 2017-11-29 A kind of current transformer tests auxiliary tool Withdrawn - After Issue CN207541103U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721626627.3U CN207541103U (en) 2017-11-29 2017-11-29 A kind of current transformer tests auxiliary tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721626627.3U CN207541103U (en) 2017-11-29 2017-11-29 A kind of current transformer tests auxiliary tool

Publications (1)

Publication Number Publication Date
CN207541103U true CN207541103U (en) 2018-06-26

Family

ID=62615843

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721626627.3U Withdrawn - After Issue CN207541103U (en) 2017-11-29 2017-11-29 A kind of current transformer tests auxiliary tool

Country Status (1)

Country Link
CN (1) CN207541103U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107796964A (en) * 2017-11-29 2018-03-13 国家电网公司 A kind of current transformer tests aid

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107796964A (en) * 2017-11-29 2018-03-13 国家电网公司 A kind of current transformer tests aid

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GR01 Patent grant
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20180626

Effective date of abandoning: 20200327

AV01 Patent right actively abandoned