CN104316736A - Combined insulated lead for switch cabinet power-frequency and alternating-current withstand voltage test - Google Patents
Combined insulated lead for switch cabinet power-frequency and alternating-current withstand voltage test Download PDFInfo
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- CN104316736A CN104316736A CN201410498389.7A CN201410498389A CN104316736A CN 104316736 A CN104316736 A CN 104316736A CN 201410498389 A CN201410498389 A CN 201410498389A CN 104316736 A CN104316736 A CN 104316736A
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- insulation course
- insulating boot
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Abstract
The invention discloses a combined insulated lead for switch cabinet power-frequency and alternating-current withstand voltage test, comprising a plurality of insulated leads, two wiring clamps used for being respectively and electrically connected with a tested object and a test transformer, and a plurality of two-way joints used for connecting two insulated leads. Each of the insulated leads is provided with a bare metal connection peg at each of the two ends. The rear end of at least one metal handle of each wiring clamp is provided with a jack in tight fit with the connection pegs of the insulated leads. The middle of each two-way joint is a metal conductive column, the two ends of the metal conductive column are respectively provided with a jack in tight fit with the connection pegs of the insulated leads, the metal conductive column is coated with an insulating layer, and the insulating layer extends to the outer ends of the jacks to form ladder-shaped holes for the insulating layer parts of the insulated leads to be embedded in. The insulated leads and the two-way joints are provided with external insulation and are not restricted by space and environment, other field electrical equipment does not need to be moved, and the testing efficiency and safety performance can be improved. The combined insulated lead can be assembled and disassembled freely as needed, and is convenient to operate and easy to carry.
Description
Technical field
The present invention relates to electrical primary equipment power frequency AC voltage withstand test field in switch cubicle, specifically a kind of switch cubicle industrial frequency AC withstand voltage test combined insulation goes between.
Background technology
According to the related specifications regulatory requirements such as " electric device installation work construction and acceptance specification GB50254-259-1996 " and " power transmission and transformation equipment state overhauling testing regulations DL/T393-2010 ", in 10kV switch cubicle, the primary equipment such as wheelbarrow switch, dry-type current transformer and bus needs to carry out industrial frequency AC withstand voltage test (withstand voltage scope: 30 ~ 42kV, time: 1 minute) in commissioning test, routine test and diagnostic test.Because the testing transformer adopted is all low capacity, lightweight device, the cable electric capacity meeting requirement of withstand voltage is large, and this cable can meet testing requirements, but weight and volume is excessive, is unfavorable for that scene is carried, and difficult arrangement.Therefore, in actual mechanical process, between tested device and testing transformer, the general bare copper wire that adopts, as adding voltage lead wires, is aided with insulation frenulum, insulating bar will add voltage lead wires as insulation stent and peripheral equipment is isolated.But following defect can be there is in the process:
(1) by space constraint, when bare copper wire is arranged, need unsettled, prevent from going between in pressure process closely over the ground and electrical equipment electric discharge around.
(2) by the impact of tested device and testing transformer height, bare copper wire should not be arranged long, and must maintain a certain distance with ground for insulation needs, if bare copper wire is long, because own wt reason there will be sag, there will be distance to the ground so inadequate, and discharge, and then cause test failure.Run into work on the spot amount large when, such as when check test or diagnostic test, the switch cubicle carrying out industrial frequency withstand voltage is needed often to have cupboard in seven, eight even whole switch gear rooms all to need test, by wire length or space constraint, often need the position of repeatedly changing testing transformer and control box, to meet test condition.
(3) although suitably can widen the distance of bare copper wire over the ground and around electrical equipment by insulation frenulum and insulating bar, can be cumbersome in implementation process, random large, be unfavorable for standard operation, bring potential safety hazard to test.
Summary of the invention
For overcoming the problem that above-mentioned employing bare copper wire needs air to bring as insulating medium as pressurized line, the present invention proposes a kind of switch cubicle industrial frequency AC withstand voltage test combined insulation to go between, the not impact of tested person space, environment and distance, can discharge between test specimen and testing transformer easily, test job efficiency and security performance can be improved.
For achieving the above object, present invention employs following technical scheme, comprising:
Several insulator pin, there is exposed metal connection-peg at insulator pin two ends;
Two are used for the binding clip be electrically connected with test specimen and testing transformer respectively, and there is jack friction tight with insulator pin connection-peg at least one metal handle rear end of each binding clip;
Several bidirectional joint being used for connection two insulator pins, be metallic conduction post in the middle of bidirectional joint, metallic conduction post two ends have jack friction tight with insulator pin connection-peg, the outer insulating layer coating of metallic conduction post, insulation course extends to form the stepped bore supplying the insulation course of insulator pin to be partially submerged into jack outer end, metallic conduction post two ends.
When testing, insulator pin is connected to Len req by bidirectional joint, and two ends are connected on the handle of binding clip again, connects test product and testing transformer by binding clip.Due to insulator pin and the outer insulating layer coating of bidirectional joint, directly can additionally arrange along ground, thus circuit additionally arranges more for convenience, need not consider the distance between other equipment of periphery, and length can increase arbitrarily, need not move other equipment on-the-spot.
Further, the insulation course covered outside the insulation course of insulator pin, metallic conduction post is made by silicone rubber insulation material.Insulation course adopts silicone rubber insulation material, and its power-frequency withstand voltage can reach 50kV, and the time is 1 minute.
Preferably, the insulation course of bidirectional joint is the insulating boot be made up of the male and female insulating boot be threaded connection, the entrance point of male and female insulating boot forms the stepped bore at bidirectional joint insulation course two ends, metallic conduction post to be built in insulating boot in room, the entrance point inwall of male and female insulating boot has the end wall spacing to metallic conduction column end circumference, when bidirectional joint two ends connect insulator pin, male and female insulating boot entrance point covers on the insulation course of insulator pin end, effectively can prevent interface from forming creeping discharge, cause test failure.
Further, be built in outside the metallic conduction post in insulating boot and cover a layer insulating.
Beneficial effect of the present invention is:
1, the bidirectional joint forming the insulator pin adding voltage lead wires and connection insulator pin all carries external insulation, and dielectric strength is higher than site test demand, therefore can arbitrarily discharge, not by space, environmental limit, do not need mobile other electrical equipments on-the-spot, also need not take other insulation measures such as frenulum or insulating bar that such as insulate, testing efficiency and security performance can be improved.
2, wire length of pressurizeing freely can assemble fractionation as required, selects suitable pressurization wire length according to the distance between test product and testing transformer, easy to assembly, is easy to carry.The stepped bore structure at bidirectional joint two ends makes the insulation course of bidirectional joint to superpose and covers on the insulation course of insulator pin end, with overlapping of the certain length of insulator pin own, interface creeping discharge can be avoided, good insulation preformance, solves the problem that between lead-in wire, joint insulation is weak well.Meanwhile, in preferred version of the present invention, the inner chamber design that silicon rubber male and female insulating boot is special, can block metallic conduction post well, simultaneously when male and female insulating boot is engaged mutually, male and female insulating boot can be made to be fixed on metallic conduction post.
3, the position of testing transformer and control box can be selected apart from the near place of power supply point nearby, when chance test specimen is many, by increasing or reduce pressurization wire length, without the need to the position of nigration transformer and control box again, alleviate the working strength of high voltage electrical test personnel, increase work efficiency.
Accompanying drawing explanation
Fig. 1 is insulator pin of the present invention knot schematic diagram.
Fig. 2 is binding clip structural representation of the present invention.
Fig. 3 is bidirectional joint structural representation of the present invention.
Fig. 4 is another example structure schematic diagram of bidirectional joint of the present invention.
Fig. 5 is the structural representation of bidirectional joint of the present invention and insulator pin assembled state.
In figure, the implication of label symbol is as follows:
1, room in 1a, 1b-insulator pin 11-copper core 12-connection-peg 13-insulation course 2-binding clip 21-jaw 22-handle 23-jack 24-insulation course 3-bidirectional joint 31-metallic conduction post 311,312-jack 313-insulation course 32-insulation course 321-male insulating boot 3211-entrance point 3212-end wall 322-female insulating boot 3221-entrance point 3222-end wall 33-stepped bore 34-insulating boot
Embodiment
Below in conjunction with accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Insulator pin structure is see Fig. 1.The length of insulator pin 1 is about 2 meters, and the outer insulating layer coating 13 of middle copper core 11 of insulator pin 1, there is exposed metal connection-peg 12 at insulator pin 1 two ends.Connection-peg 12 front end has ring groove 121, to increase the frictional resistance between web member, to increase tightening force.
Binding clip structure is see Fig. 2.Binding clip 2 front end is that jaw 21, metal handle 22 rear end be connected with test product to be measured or testing transformer high-pressure side has the friction tight jack 23 with insulator pin connection-peg 12, and metal handle 22 outside is coated with insulation course 24.Also jack 23 can be all set two metal handle rear ends, be connected with insulator pin 1 to facilitate any jack.
The structure of bidirectional joint is see Fig. 3.Be metallic conduction post 31 in the middle of bidirectional joint 3, metallic conduction post 31 two ends have the friction tight jack 311,312 with insulator pin connection-peg 12, the outer insulating layer coating 32 of metallic conduction post 31, insulation course 32 extends to form the stepped bore 33 supplying the insulation course 13 of insulator pin to be partially submerged into jack 311,312 outer end, metallic conduction post two ends.When bidirectional joint 3 two ends connect insulator pin 1, the insulation course at stepped bore 33 place covers on the insulation course 13 of insulator pin 1 end at least in part.
The insulation course 32 of bidirectional joint 3 also can adopt split-type structural, shown in Figure 4.Insulation course 32 is made up of two male and female insulating boots be threaded connection 321,322, and metallic conduction post 31 is built in insulating boot in room 34, and metallic conduction post 31 is simultaneously outer covers a layer insulating 313.The entrance point 3211,3221 of male and female insulating boot 321,322 forms the stepped bore 33 at bidirectional joint 3 insulation course 32 two ends.Entrance point 3211,3221 inwall of male and female insulating boot 321,322 has the end wall 3212,3222 spacing to metallic conduction post 31 end circumference, when locking male and female insulating boot 321,322, metallic conduction post 31 can be fixed on insulating boot indoor 34, and entrance point 3211,3221 arranged concentric of the jack 311,312 at metallic conduction post two ends and male and female insulating boot 321,322.When bidirectional joint 3 two ends connect insulator pin 1a, 1b, male and female insulating boot 321,322 entrance point 3211,3221 covers on the insulation course 13 of insulator pin end.Its assembling mode as shown in Figure 5, two insulator pins 1a, 1b are connected to bidirectional conductor post 31 two ends of bidirectional joint respectively by connection-peg, male and female insulating boot 321,322 is screwed, the end wall 3212,3222 of the entrance point of male and female insulating boot is close to metallic conduction post 31 end, and male and female insulating boot entrance point 3211,3221 covers on the insulation course of insulator pin 1a, 1b respectively.
The insulation course 13 of insulator pin 1, the insulation course 32 of bidirectional joint 3, insulating boot 321 and 322 are made by the silicone rubber insulation material of good pressure-resistant performance.And the insulation course 24 covered outside the insulation course 313 of built-in metallic conduction post 31 and binding clip 2 handle end can adopt common insulating material to make.
The present invention needs several insulator pin 1, two binding clips 2 and several bidirectional joint 3.During test, first insulator pin bidirectional joint is electrically connected to Len req, again the insulator pin at two ends is electrically connected with binding clip by connection-peg, the binding clip at two ends is clamped in respectively the respective terminal of tested device and testing transformer, can test operation be carried out.
Claims (4)
1. switch cubicle industrial frequency AC withstand voltage test combined insulation goes between, and comprises several insulator pin (1), and there is exposed metal connection-peg (12) at insulator pin (1) two ends; Characterized by further comprising:
Two are used for the binding clip (2) be electrically connected with test product and testing transformer respectively, and each binding clip (2) at least one metal handle (22) rear end has and insulator pin connection-peg (12) friction tight jack (23);
Several bidirectional joint (3) being used for connection two insulator pins (1), be metallic conduction post (31) in the middle of bidirectional joint (3), metallic conduction post (31) two ends have and insulator pin connection-peg (12) friction tight jack (311,312), metallic conduction post (31) outer insulating layer coating (32), insulation course (32) extends to form the stepped bore (33) supplying the insulation course (13) of insulator pin (1) to be partially submerged into jack (311,312) outer end, metallic conduction post two ends.
2. switch cubicle industrial frequency AC withstand voltage test combined insulation according to claim 1 goes between, and it is characterized in that: the insulation course (32) covered outside the insulation course (13) of insulator pin (1), metallic conduction post (31) is made by silicone rubber insulation material.
3. switch cubicle industrial frequency AC withstand voltage test combined insulation according to claim 1 and 2 goes between, it is characterized in that: the insulation course (32) of bidirectional joint (3) is by the public affairs be threaded connection, female insulating boot (321, 322) insulating boot formed, public, the entrance point (3211 of female insulating boot, 3221) stepped bore (33) at bidirectional joint (3) insulation course (32) two ends is formed, metallic conduction post (31) is built in room in insulating boot (34), public, the entrance point (3211 of female insulating boot, 3221) inwall has the end wall (3212 spacing to metallic conduction post (31) end circumference, 3222), when bidirectional joint (3) two ends connect insulator pin (1), public, female insulating boot entrance point (3211, 3221) cover on the insulation course (13) of insulator pin end.
4. switch cubicle industrial frequency AC withstand voltage test combined insulation according to claim 4 goes between, and it is characterized in that: be built in outside the metallic conduction post (31) in insulating boot and cover a layer insulating (313).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410498389.7A CN104316736B (en) | 2014-09-25 | 2014-09-25 | Combined insulated lead for switch cabinet power-frequency and alternating-current withstand voltage test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410498389.7A CN104316736B (en) | 2014-09-25 | 2014-09-25 | Combined insulated lead for switch cabinet power-frequency and alternating-current withstand voltage test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104316736A true CN104316736A (en) | 2015-01-28 |
| CN104316736B CN104316736B (en) | 2017-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410498389.7A Active CN104316736B (en) | 2014-09-25 | 2014-09-25 | Combined insulated lead for switch cabinet power-frequency and alternating-current withstand voltage test |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104714060A (en) * | 2015-03-26 | 2015-06-17 | 国网辽宁省电力有限公司抚顺供电公司 | 10 kV handcart switch test plug |
| CN113433440A (en) * | 2021-07-21 | 2021-09-24 | 国网河北省电力有限公司检修分公司 | A keep apart auxiliary device for high tension cable withstand voltage test |
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| CN102290742A (en) * | 2011-08-26 | 2011-12-21 | 湖北省输变电工程公司 | Tension stringing construction technology |
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| CN202797302U (en) * | 2012-09-21 | 2013-03-13 | 林阿成 | Electrical circuit connecting piece |
| CN103259215A (en) * | 2012-05-22 | 2013-08-21 | 国家电网公司 | Telescopic insulation rod device |
| CN203350291U (en) * | 2013-06-28 | 2013-12-18 | 国家电网公司 | High voltage test wiring rod |
| CN203826038U (en) * | 2014-05-15 | 2014-09-10 | 乐清市威尔龙高温线缆有限公司 | Outdoor cable |
| CN204255997U (en) * | 2014-09-25 | 2015-04-08 | 国家电网公司 | Switch cubicle industrial frequency AC withstand voltage test combined insulation goes between |
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2014
- 2014-09-25 CN CN201410498389.7A patent/CN104316736B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE4006866C1 (en) * | 1990-03-05 | 1991-06-06 | Karl Pfisterer Elektrotechnische Spezialartikel Gmbh & Co Kg, 7000 Stuttgart, De | Housed medium or high voltage fuse - has sensor in cartridge recognising state of wound fuse wire |
| CN2451888Y (en) * | 2000-11-03 | 2001-10-03 | 沈亚光 | Improved integral forming mountable non-neon lamp |
| JP2009036599A (en) * | 2007-07-31 | 2009-02-19 | Chugoku Electric Power Co Inc:The | Voltage test plug |
| CN102290742A (en) * | 2011-08-26 | 2011-12-21 | 湖北省输变电工程公司 | Tension stringing construction technology |
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| CN202797302U (en) * | 2012-09-21 | 2013-03-13 | 林阿成 | Electrical circuit connecting piece |
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| CN204255997U (en) * | 2014-09-25 | 2015-04-08 | 国家电网公司 | Switch cubicle industrial frequency AC withstand voltage test combined insulation goes between |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104714060A (en) * | 2015-03-26 | 2015-06-17 | 国网辽宁省电力有限公司抚顺供电公司 | 10 kV handcart switch test plug |
| CN113433440A (en) * | 2021-07-21 | 2021-09-24 | 国网河北省电力有限公司检修分公司 | A keep apart auxiliary device for high tension cable withstand voltage test |
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| Publication number | Publication date |
|---|---|
| CN104316736B (en) | 2017-05-17 |
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