CN204439667U - A kind of portable type current transformer testing clamp - Google Patents

A kind of portable type current transformer testing clamp Download PDF

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Publication number
CN204439667U
CN204439667U CN201420865267.2U CN201420865267U CN204439667U CN 204439667 U CN204439667 U CN 204439667U CN 201420865267 U CN201420865267 U CN 201420865267U CN 204439667 U CN204439667 U CN 204439667U
Authority
CN
China
Prior art keywords
holding rod
binding clip
current transformer
portable type
type current
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.)
Expired - Fee Related
Application number
CN201420865267.2U
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Chinese (zh)
Inventor
蒋宪琢
李蕴超
刘畅
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.)
State Grid Corp of China SGCC
State Grid Hebei Electric Power Co Ltd
Xingtai Power Supply Co of State Grid Hebei Electric Power Co Ltd
Nangong Power Supply Co of State Grid Hebei Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
State Grid Hebei Electric Power Co Ltd
Xingtai Power Supply Co of State Grid Hebei Electric Power Co Ltd
Nangong Power Supply Co of State Grid Hebei Electric Power Co Ltd
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 State Grid Corp of China SGCC, State Grid Hebei Electric Power Co Ltd, Xingtai Power Supply Co of State Grid Hebei Electric Power Co Ltd, Nangong Power Supply Co of State Grid Hebei Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201420865267.2U priority Critical patent/CN204439667U/en
Application granted granted Critical
Publication of CN204439667U publication Critical patent/CN204439667U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of portable type current transformer testing clamp, relate to electric power network service kit technical field.Comprise test binding clip and insulation holding rod, insulation holding rod inside is provided with copper conductor, and the copper conductor electrical connection of test binding clip and insulation holding rod inside, described insulation holding rod afterbody is provided with the first connection terminal, and the total length of described portable type current transformer testing clamp is 2-6m.The utility model can realize wiring on ground, does not need ascend operation, avoids the danger that ascend operation brings, decreases operating personnel, save the time, improve work efficiency.

Description

A kind of portable type current transformer testing clamp
Technical field
The utility model relates to electric power network service kit technical field, particularly relates to a kind of portable type current transformer testing clamp.
Background technology
Under the large situation of nation-building sturdy power grid, the task of electric system is very heavy, and there is a lot of seat in transformer station that is newly-built and transformation every year.According to regulatory requirements, the new current transformer installed and all must do test no-load voltage ratio rising test when inspecting state.Test principle is simple, but it is very loaded down with trivial details that flow process fixed by the up-flow line in test process, not only need to take very large manpower and time, also there is certain device damage and the hidden danger of injury to personnel, have a strong impact on the work efficiency of this work and the personal safety of staff.
Rising test often needs the copper conductor that current-carrying capacity is large, be generally diameter more than 50 millimeters, originally the method for the traditional rising test of use is that workmen to carry on up-flow line ladder to PT interval, due to narrow space on PT interval, can only also only have the space that can hold a people, carrying heavy copper conductor turns round mobile extremely inconvenient above, do not look to occur copper conductor a little and do not touch porcelain bushing shell and topple over and smash the accidents such as porcelain bushing shell.
If adopt up-flow line external, so also there are drawback and risk, be summarized as follows: in the middle of work progress with pole up-flow line provoke hang over right cylinder aluminum stranded conductor or rectangular parallelepiped aluminium row on, the up-flow line weight needed due to rising test is more heavy, what the weight of adding insulating bar itself was formed makes a concerted effort to cause whole equipment very heavy, external copper cash plays pendulum under the effect of wind and gravity, very easily breaks porcelain vase.
If adopt external wire, can only use with insulation course, after using a period of time, insulation ag(e)ing occur and also may there is the phenomenons such as damaged, cause its insulating capacity to decline, very easily get an electric shock when haze weather or rainy weather.
Doing the work of mutual inductor rising test to transformer station at least will go 5 ~ 6 people at every turn now, owing to needing at current transformer primary side two ends mounting rising test wire during test, terminals L1, L2(P1, P2) be overhead highly generally 4 ~ 6 meters, single ladder or escalator will be used during work, and special messenger need be had to help ladder, the upper and lower tool for transmitting of special messenger, 1 people gets on to mount up-flow or boosting line, also has operation, record and care provider.
Will use single ladder or escalator during work, and special messenger need be had to help ladder, the upper and lower tool for transmitting of special messenger, this is the key point of problem.Ladder can not lean against on the porcelain bushing shell of current transformer or voltage transformer (VT) on request, and porcelain bushing shell smooth and and the surface of contact of ladder little, even if ladder top after also extremely unstable, easily topple over and smash the accidents such as porcelain bushing shell.
Because relate to work high above the ground, specify according to national grid electric power safety working regulation, high-rise working securing band is forbidden the high use of low extension, forbids being hang on mobile or unstable object, as on the supporters such as lightning arrester, isolating switch, disconnector, current transformer, voltage transformer (VT).On the position of work, securing band also can not find suitable place and fixes, in addition, because ladder is too high, people aloft feels to swing shakiness, even if still have fragmentary induced electricity fiber crops hand after utilizing ground wire to discharge, produces fear psychologically, very dangerous so work together, very easily cause the personal safety accident potential of staff.
Test by conventional method, 110kV transformer station for a standard: the current transformer of 110kV and 35kV in standing, A phase B phase C phase has 36 current transformers, and the test duration of a mutual inductor is 20 minutes, and proper testing required time is 36 × 20=720 minute=12 hours.
Utility model content
Technical problem to be solved in the utility model is to provide simple, easy to operate, the time saving and energy saving portable type current transformer testing clamp of a kind of structure, do not need ascend operation, avoid the danger that ascend operation brings, decrease operating personnel, save the time, improve work efficiency.
For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of portable type current transformer testing clamp, comprise test binding clip and insulation holding rod, insulation holding rod inside is provided with copper conductor, the copper conductor electrical connection of test binding clip and insulation holding rod inside, described insulation holding rod afterbody is provided with the first connection terminal, and the total length of described portable type current transformer testing clamp is 2-6m.
Preferably, described test binding clip and insulation holding rod are split-type structural, described insulation holding rod comprises holding rod and at least one insulated connecting rod, and described test binding clip, absolutely at least one edge connecting link and holding rod are all removably connected by copper male and female head thread formula between head and the tail between two.
Preferably, described test binding clip adopts olecranon design, and its upper jaw is fixed on binding clip masthead portion, described binding clip bar is provided with chute, and be connected with copper conductor bottom binding clip bar, lower jaw is connected with slide, and be provided with lower jaw reset fastening spring, and be oppositely arranged with upper jaw.
Preferably, described upper jaw and lower jaw in opposite directions end face are provided with laciniation, and center is provided with the arc-shaped recess matched for wire gripper.
Preferably, described upper jaw is provided with the second connection terminal, and described lower jaw is provided with the 3rd connection terminal, and the second connection terminal is connected by wire with the 3rd connection terminal.
Preferably, the total length of described portable type current transformer testing clamp is 2.4-4.8m.
The beneficial effect adopting technique scheme to produce is: test binding clip of the present utility model adopts Eagle-mouth type design, and bit is provided with laciniation, lower jaw is opened by retracing spring, closes simultaneously, binding clip keying strength and contact area are increased, wiring flexibly, firmly, can clamp right cylinder aluminum stranded conductor or rectangular parallelepiped aluminium row; The connection terminal that bit is provided with couples together by copper conductor, ensure that the reliability of wire, copper conductor is arranged on test binding clip, insulated connecting rod and insulation holding rod inner simultaneously, avoid copper conductor to touch porcelain bushing shell and topple over and smash the accidents such as porcelain bushing shell, ensure that the safety of operating personnel, also prevent the aging of copper conductor insulation course simultaneously; Extend the serviceable life of copper conductor; Because described test binding clip, insulated connecting rod and insulation holding rod adopt copper male and female head thread formula to removably connect by between both head and the tail, insulation holding rod afterbody also has the first connection terminal, for connecting up-flow equipment, wiring can be realized on ground, without ascend operation, avoid the danger that ascend operation brings, decrease operating personnel, save the time, improve work efficiency.
Accompanying drawing explanation
Fig. 1 is the utility model one-piece construction schematic diagram;
Wherein, 1, test binding clip, 2, insulated connecting rod, 3, holding rod, the 4, first connection terminal, 5, upper jaw, 6 lower jaws, 7 second connection terminals, the 8, the 3rd connection terminal, 9, binding clip bar.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1, the utility model is a kind of portable type current transformer testing clamp, comprise test binding clip 1 and insulation holding rod, insulation holding rod inside is provided with copper conductor, the copper conductor electrical connection of test binding clip 1 and insulation holding rod inside, described insulation holding rod afterbody is provided with the first connection terminal 4, and the total length of described portable type current transformer testing clamp is 2-6m; Described test binding clip 1 and insulation holding rod are split-type structural, described insulation holding rod comprises holding rod 3 and at least one insulated connecting rod 2, and described test binding clip 1, absolutely at least one edge connecting link 2 and holding rod 3 are all removably connected by copper male and female head thread formula between head and the tail between two; Described test binding clip 1 adopts olecranon to design, and its upper jaw 5 is fixed on binding clip bar 9 top, and described binding clip bar 9 is provided with chute, be connected with copper conductor bottom binding clip bar 9, lower jaw 6 is connected with slide, and is provided with lower jaw 6 and resets fastening spring, and is oppositely arranged with upper jaw 5; Described upper jaw 5 and lower jaw 6 in opposite directions end face are provided with laciniation, and center is provided with the arc-shaped recess matched for wire gripper; Described upper jaw 5 is provided with the second connection terminal 7, and described lower jaw 6 is provided with the 3rd connection terminal 8, second connection terminal 7 and is connected by wire with the 3rd connection terminal 8; The total length of described portable type current transformer testing clamp is 2.4-4.8m.
Insulated connecting rod of the present utility model can be multiple, test binding clip, insulated connecting rod and insulation holding rod are 1.2 meters long, whole device total length is set to 4.8 meters, the transformer station being applicable to measure the grade such as 220KV and following various voltages uses, for the mutual inductor of 35KV, only need use a joint insulated connecting rod, test binding clip is connected can measures with insulation holding rod, and for the mutual inductor of 10kV, only need use test binding clip and the holding rod that insulate is connected, on-the-spot strong adaptability, reliably easy to connect.
The utility model due to described test binding clip, insulated connecting rod and insulation holding rod be by both head and the tail between adopt copper male and female head thread formula to removably connect, draw the copper lug of a 1000A to be reliably connected with our up-flow equipment at insulation holding rod afterbody, thus realize up-flow experiment.Closely, electric conductivity is good for copper lug and device integrated connection; This equipment direct resistance metering reaches 0.03 ohm, and its electric conductivity is good especially, meets requirement of experiment completely; Can wiring be realized on ground, without ascend operation, avoid the danger that ascend operation brings, decrease operating personnel, save the time, provide work efficiency.With 110kV transformer station 36 current transformers of a standard, within test duration of a mutual inductor can be reduced to 5 minutes, proper testing required time is 36 × 5=180 minute=3 hours.
Test binding clip of the present utility model adopts Eagle-mouth type design, and bit is provided with laciniation, lower jaw is opened by retracing spring, closes simultaneously, and binding clip keying strength and contact area are increased, wiring flexibly, firmly, can clamp right cylinder aluminum stranded conductor or rectangular parallelepiped aluminium row; The connection terminal that bit is provided with couples together by copper conductor, ensure that the reliability of wire, copper conductor is arranged on test binding clip, insulated connecting rod and insulation holding rod inner simultaneously, avoid copper conductor to touch porcelain bushing shell and topple over and smash the accidents such as porcelain bushing shell, ensure that the safety of operating personnel, also prevent the aging of copper conductor insulation course simultaneously; Extend the serviceable life of copper conductor; Because described test binding clip, insulated connecting rod and insulation holding rod adopt copper male and female head thread formula to removably connect by between both head and the tail, insulation holding rod afterbody also has the first connection terminal, for connecting up-flow equipment, wiring can be realized on ground, without ascend operation, avoid the danger that ascend operation brings, decrease operating personnel, save the time, improve work efficiency.

Claims (6)

1. a portable type current transformer testing clamp, it is characterized in that: comprise test binding clip (1) and insulation holding rod, insulation holding rod inside is provided with copper conductor, the copper conductor electrical connection of test binding clip (1) and insulation holding rod inside, described insulation holding rod afterbody is provided with the first connection terminal (4), and the total length of described portable type current transformer testing clamp is 2-6m.
2. a kind of portable type current transformer testing clamp according to claim 1, it is characterized in that: described test binding clip (1) and insulation holding rod are split-type structural, described insulation holding rod comprises holding rod (3) and at least one insulated connecting rod (2), and described test binding clip (1), absolutely at least one edge connecting link (2) and holding rod (3) are all removably connected by copper male and female head thread formula between head and the tail between two.
3. a kind of portable type current transformer testing clamp according to claim 1 and 2, it is characterized in that: described test binding clip (1) adopts olecranon design, its upper jaw (5) is fixed on binding clip bar (9) top, described binding clip bar (9) is provided with chute, binding clip bar (9) bottom is connected with copper conductor, lower jaw (6) is connected with slide, and is provided with lower jaw (6) reset fastening spring, and is oppositely arranged with upper jaw (5).
4. a kind of portable type current transformer testing clamp according to claim 3, is characterized in that: described upper jaw (5) and lower jaw (6) in opposite directions end face are provided with laciniation, and center is provided with the arc-shaped recess matched for wire gripper.
5. a kind of portable type current transformer testing clamp according to claim 3, it is characterized in that: described upper jaw (5) is provided with the second connection terminal (7), described lower jaw (6) is provided with the 3rd connection terminal (8), and the second connection terminal (7) is connected by wire with the 3rd connection terminal (8).
6. a kind of portable type current transformer testing clamp according to claim 1, is characterized in that: the total length of described portable type current transformer testing clamp is 2.4-4.8m.
CN201420865267.2U 2014-12-31 2014-12-31 A kind of portable type current transformer testing clamp Expired - Fee Related CN204439667U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420865267.2U CN204439667U (en) 2014-12-31 2014-12-31 A kind of portable type current transformer testing clamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420865267.2U CN204439667U (en) 2014-12-31 2014-12-31 A kind of portable type current transformer testing clamp

Publications (1)

Publication Number Publication Date
CN204439667U true CN204439667U (en) 2015-07-01

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Family Applications (1)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104535804A (en) * 2014-12-31 2015-04-22 国家电网公司 Portable current transformer test clamp
CN105388329A (en) * 2015-11-17 2016-03-09 国网北京市电力公司 Wiring clamp
CN105699713A (en) * 2016-04-05 2016-06-22 国网河北省电力公司衡水供电分公司 Multifunctional telescopic high-altitude electric testing clamp and application method thereof
CN105738660A (en) * 2016-04-14 2016-07-06 国网浙江杭州市余杭区供电公司 High-altitude wiring tool

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104535804A (en) * 2014-12-31 2015-04-22 国家电网公司 Portable current transformer test clamp
CN105388329A (en) * 2015-11-17 2016-03-09 国网北京市电力公司 Wiring clamp
CN105699713A (en) * 2016-04-05 2016-06-22 国网河北省电力公司衡水供电分公司 Multifunctional telescopic high-altitude electric testing clamp and application method thereof
CN105738660A (en) * 2016-04-14 2016-07-06 国网浙江杭州市余杭区供电公司 High-altitude wiring tool
CN105738660B (en) * 2016-04-14 2019-03-05 国网浙江杭州市余杭区供电有限公司 A kind of high-altitude wiring tool

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150701

Termination date: 20151231

EXPY Termination of patent right or utility model