CN104316736B - 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 PDF

Info

Publication number
CN104316736B
CN104316736B CN201410498389.7A CN201410498389A CN104316736B CN 104316736 B CN104316736 B CN 104316736B CN 201410498389 A CN201410498389 A CN 201410498389A CN 104316736 B CN104316736 B CN 104316736B
Authority
CN
China
Prior art keywords
insulating
metallic conduction
insulating barrier
ends
lead
Prior art date
Application number
CN201410498389.7A
Other languages
Chinese (zh)
Other versions
CN104316736A (en
Inventor
邓雄伟
方存保
施伟
汪年斌
朱德亮
李传江
Original Assignee
国家电网公司
国网安徽省电力公司铜陵供电公司
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 国家电网公司, 国网安徽省电力公司铜陵供电公司 filed Critical 国家电网公司
Priority to CN201410498389.7A priority Critical patent/CN104316736B/en
Publication of CN104316736A publication Critical patent/CN104316736A/en
Application granted granted Critical
Publication of CN104316736B publication Critical patent/CN104316736B/en

Links

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

Switch cubicle industrial frequency AC pressure test combined insulation lead

Technical field

The present invention relates to electrical primary equipment power frequency ac voltage withstanding test field in switch cubicle, specifically a kind of switch Cabinet industrial frequency AC pressure test combined insulation lead.

Background technology

According to《Electric device installing engineering construction and acceptance specification GB50254-259-1996》With《Power transmission and transformation equipment state Checking experiment code DL/T393-2010》Etc. related specifications regulatory requirements, wheelbarrow switch, dry-type current mutual inductance in 10kV switch cubicles The primary equipment such as device and bus needs to carry out industrial frequency AC pressure test in commissioning test, routine test and diagnostic test (pressure scope:30~42kV, time:1 minute).Because the testing transformer for adopting all is low capacity, lightweight device, meet The cable capacitance of resistance to pressure request is big, and this cable can meet test requirements document, but weight and volume is excessive, be unfavorable for scene Carry, and difficult arrangement.Therefore, it is general between tested device and testing transformer in actual mechanical process to be made using bare copper wire For pressurization lead, it is aided with insulation frenulum, insulating bar and is isolated pressurization lead with peripheral equipment as insulation stent.So And can there is following defect in the process:

(1) limited by space, when bare copper wire is arranged, need it is hanging, prevent in pressure process lead excessively it is near over the ground and surrounding Electrical equipment discharges.

(2) affected by tested device and testing transformer height, bare copper wire should not arrange long, and for insulation Needs must be maintained a certain distance with ground, if bare copper wire is long, because own wt reason occurs sag, so be occurred Distance to the ground not enough, and discharges, and then causes test failure.Run into work on the spot amount it is big in the case of, such as in check When test or diagnostic test, the switch cubicle for carrying out industrial frequency withstand voltage is needed often there are seven, eight even whole switch interior cupboards Test is required for, is limited by wire length or space, generally require the position for repeatedly changing testing transformer and control box, with Meet experimental condition.

(3) although can suitably widen bare copper wire over the ground by insulation frenulum and insulating bar and surrounding electrical equipment away from From, but can be cumbersome in implementation process, it is random big, it is unfavorable for standard operation, carry out potential safety hazard to calibration tape.

The content of the invention

To overcome above-mentioned employing bare copper wire to need the problem that air brings as dielectric, the present invention to carry as pressurized line Go out a kind of Switch cubicle industrial frequency AC pressure test combined insulation lead, not the impact of tested person space, environment and distance, can With the easily release between test item and testing transformer, test job efficiency and security performance can be improved.

For achieving the above object, technical scheme below is present invention employs, including:

There is exposed metal connection-peg at several insulator pins, insulator pin two ends;

Two ramps for being respectively intended to be electrically connected with test item and testing transformer, each metal of ramp at least one Handle rear end has and the friction tight jack of insulator pin connection-peg;

It is metallic conduction post in the middle of several bidirectional joints for connecting two insulator pins, bidirectional joint, metallic conduction Post two ends are provided with and the friction tight jack of insulator pin connection-peg, the outer insulating layer coating of metallic conduction post, and insulating barrier is to metallic conduction Post two ends jack outer end extends to form the stepped bore being partially submerged into for the insulating barrier of insulator pin.

In test, insulator pin is connected to Len req by bidirectional joint, and two ends reconnect the handle in ramp On, test product and testing transformer are connected by ramp.Due to insulator pin and the outer insulating layer coating of bidirectional joint, can be along ground Directly additionally arrange, thus circuit additionally arrange it is more convenient, it is not necessary to the distance between consider with periphery other equipment, and length can appoint Meaning increases, it is not necessary to mobile scene other equipment.

Further, the overcoating insulating barrier of the insulating barrier of insulator pin, metallic conduction post is by silicone rubber insulation material system Into.Insulating barrier adopts silicone rubber insulation material, and its power frequency withstanding voltage can reach 50kV, and the time is 1 minute.

Preferably, the insulating barrier of bidirectional joint is the insulating boot being made up of the male and female insulating boot being threaded connection, public, The entrance point of female insulating boot forms the stepped bore at bidirectional joint insulating barrier two ends, and metallic conduction post is built in insulating boot interior room In, the entrance point inwall of male and female insulating boot has the end wall circumferentially spacing to metallic conduction column end, when the connection of bidirectional joint two ends During insulator pin, male and female insulating boot entrance point is covered on the insulating barrier of insulator pin end, can effectively prevent seam shape Into creeping discharge, cause test failure.

Further, the overcoating layer insulating of metallic conduction post being built in insulating boot.

The beneficial effects of the present invention is:

The bidirectional joint of the insulator pin and connection insulator pin that the 1, constitute pressurization lead carries external insulation, and insulate Intensity is higher than field test demand, therefore can arbitrarily be discharged, and is not limited by space, environment, it is not necessary to mobile scene other Electrical equipment, need not also take other insulation measures such as insulation frenulum or insulating bar, can improve testing efficiency and safety Performance.

2nd, pressurization lead length can freely assemble as needed fractionation, according to the distance between test product and testing transformer Suitable pressurization lead length is selected, it is easy to assembly, it is easy to carry.The stepped bore structure at bidirectional joint two ends causes two-way connecing The weight that the insulating barrier of head can be superimposed and be covered on the insulating barrier of insulator pin end, with insulator pin certain length itself Close, seam creeping discharge, good insulation preformance can be avoided to solve the problems, such as that joint insulation is weak between lead well. Meanwhile, in preferred version of the present invention, the special inner chamber design of silicone rubber male and female insulating boot can well block metallic conduction Post, while when male and female insulating boot is mutually twisted, male and female insulating boot can be made to be fixed in metallic conduction post.

3rd, the position of testing transformer and control box can select nearby away from power supply point it is near where, meet test item more than feelings Under condition, can by increasing or decreasing pressurization lead length, without the need for the position of nigration transformator and control box again, The working strength of high voltage electrical test personnel is alleviated, work efficiency is improved.

Description of the drawings

Fig. 1 is that insulator pin of the present invention ties schematic diagram.

Fig. 2 is ramp 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.

The implication of label symbol is as follows in figure:

1st, 1a, 1b-insulator pin 11-copper core, 12-connection-peg, 13-insulating barrier, 2-ramp, 21-jaw 22-handle, 23-jack 24- 3-bidirectional joints of insulating barrier 31-metallic conduction post 311,312- jack 313- is exhausted Edge layer 32-insulating barrier 321- male insulating boot 3211- entrance point 3212- end walls 322- mother's insulating boot 3221- imports End 3222- end wall 33- stepped bore 34-insulating boot interior rooms

Specific embodiment

Below in conjunction with the accompanying drawings, the technical scheme in the embodiment of the present invention is clearly and completely described.Obviously, retouched The embodiment stated is only a part of embodiment of the invention, rather than the embodiment of whole.Based on the embodiment in the present invention, this The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to the present invention The scope of protection.

Insulator pin structure is referring to Fig. 1.The length of insulator pin 1 is 2 meters or so, outside the middle copper core 11 of insulator pin 1 There is exposed metal connection-peg 12 at insulating layer coating 13, the two ends of insulator pin 1.The front end of connection-peg 12 is provided with cannelure 121, to increase Frictional resistance between connector, to increase tightening force.

Wiring clamping structure is referring to Fig. 2.The front end of ramp 2 is the jaw being connected with test product to be measured or testing transformer high-pressure side 21, a rear end of metal handle 22 has and the friction tight jack 23 of insulator pin connection-peg 12, is coated with outside metal handle 22 Insulating barrier 24.Jack 23 can also be respectively provided with two metal handle rear ends, to facilitate any one jack to connect with insulator pin 1 Connect.

The structure of bidirectional joint is referring to Fig. 3.It is metallic conduction post 31 in the middle of bidirectional joint 3, the two ends of metallic conduction post 31 are opened Have and the friction tight jack 311,312 of insulator pin connection-peg 12, the outer insulating layer coating 32 of metallic conduction post 31, insulating barrier 32 is to gold Category conductive pole two ends jack 311,312 outer ends extend to form the stepped bore 33 being partially submerged into for the insulating barrier 13 of insulator pin. When the two ends of bidirectional joint 3 connect insulator pin 1, the insulating barrier at stepped bore 33 at least partially covers over insulator pin 1 On the insulating barrier 13 of end.

The insulating barrier 32 of bidirectional joint 3 may also be employed split-type structural, shown in Figure 4.Insulating barrier 32 is passed through by two The male and female insulating boot 321,322 of threaded connection is constituted, and metallic conduction post 31 is built in insulating boot interior room 34, metallic conduction post 31 are cladded with a layer insulating 313 simultaneously.The entrance point 3211,3221 of male and female insulating boot 321,322 forms bidirectional joint 3 and insulate The stepped bore 33 at 32 two ends of layer.The entrance point 3211 of male and female insulating boot 321,322,3221 inwalls have to metallic conduction post 31 The circumferentially spacing end wall 3212,3222 in end, when male and female insulating boot 321,322 are locked, can be fixed on metallic conduction post 31 34 in insulating boot room, and the entrance point 3211 of the jack 311,312 at metallic conduction post two ends and male and female insulating boot 321,322, 3221 arranged concentrics.When the two ends of bidirectional joint 3 connect insulator pin 1a, 1b when, male and female insulating boot 321,322 entrance points 3211, 3221 are covered on the insulating barrier 13 of insulator pin end.Its assembling mode is as shown in figure 5, two insulator pin 1a, 1b difference The two ends of bidirectional conductor post 31 of bidirectional joint are connected to by connection-peg, male and female insulating boot 321,322 is screwed, male and female insulation The end wall 3212,3222 of the entrance point of cover is close to the end of metallic conduction post 31,3211,3221 points of male and female insulating boot entrance point It is not covered on the insulating barrier of insulator pin 1a, 1b.

The insulating barrier 13 of insulator pin 1, the insulating barrier 32 of bidirectional joint 3, insulating boot 321 and 322 are by good pressure-resistant performance Silicone rubber insulation material make.And the overcoating insulation of the insulating barrier 313 and the handle end of ramp 2 of built-in metallic conduction post 31 Layer 24 can be made using common insulant.

The present invention needs several 1, two ramps 2 of insulator pin and several bidirectional joints 3.During test, first insulation is drawn Line bidirectional joint is electrically connected to Len req, then the insulator pin at two ends is electrically connected by connection-peg with ramp, by two The ramp at end is clamped in respectively the respective terminal of tested device and testing transformer, you can carry out test operation.

Claims (4)

1. Switch cubicle industrial frequency AC pressure test combined insulation lead, including several insulator pins (1), insulator pin (1) two There is exposed metal connection-peg (12) at end;Characterized by further comprising:
Two ramps (2) for being respectively intended to be electrically connected with test product and testing transformer, each metal of ramp (2) at least one Handle (22) rear end has and the friction tight jack (23) of metal connection-peg (12);
It is metallic conduction post (31) in the middle of several bidirectional joints (3) for connecting two insulator pins (1), bidirectional joint (3), Metallic conduction post (31) two ends are provided with and the friction tight jack of metal connection-peg (12) (311,312), and metallic conduction post (31) is outward Insulating layer coating (32), insulating barrier (32) extends to be formed for insulator pin (1) to metallic conduction post two ends jack (311,312) outer end The stepped bore (33) that is partially submerged into of insulating barrier (13).
2. Switch cubicle industrial frequency AC pressure test according to claim 1 combined insulation lead, it is characterised in that:Insulation The overcoating insulating barrier (32) of the insulating barrier (13) of lead (1), metallic conduction post (31) is made by silicone rubber insulation material.
3. Switch cubicle industrial frequency AC pressure test according to claim 1 and 2 combined insulation lead, it is characterised in that: The insulating barrier (32) of bidirectional joint (3) is the insulating boot being made up of the male and female insulating boot (321,322) being threaded connection, public, The entrance point (3211,3221) of female insulating boot forms the stepped bore (33) at bidirectional joint (3) insulating barrier (32) two ends, and metal is led Electric post (31) is built in insulating boot interior room (34), and entrance point (the 3211,3221) inwall of male and female insulating boot has to metallic conduction The circumferentially spacing end wall in post (31) end (3212,3222), when bidirectional joint (3) two ends connect insulator pin (1), male and female Insulating boot entrance point (3211,3221) is covered on the insulating barrier of insulator pin end (13).
4. Switch cubicle industrial frequency AC pressure test according to claim 3 combined insulation lead, it is characterised in that:It is built-in The overcoating layer insulating (313) of metallic conduction post (31) in insulating boot.
CN201410498389.7A 2014-09-25 2014-09-25 Combined insulated lead for switch cabinet power-frequency and alternating-current withstand voltage test CN104316736B (en)

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 CN104316736A (en) 2015-01-28
CN104316736B true CN104316736B (en) 2017-05-17

Family

ID=52371989

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410498389.7A CN104316736B (en) 2014-09-25 2014-09-25 Combined insulated lead for switch cabinet power-frequency and alternating-current withstand voltage test

Country Status (1)

Country Link
CN (1) CN104316736B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
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

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN102290742A (en) * 2011-08-26 2011-12-21 湖北省输变电工程公司 Tension Stringing Technology
CN202614799U (en) * 2012-05-28 2012-12-19 湖南省电力公司永州道县电力局 Flexible connecting device for electrical test
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

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009036599A (en) * 2007-07-31 2009-02-19 Chugoku Electric Power Co Inc:The Voltage test plug

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN102290742A (en) * 2011-08-26 2011-12-21 湖北省输变电工程公司 Tension Stringing Technology
CN103259215A (en) * 2012-05-22 2013-08-21 国家电网公司 Telescopic insulation rod device
CN202614799U (en) * 2012-05-28 2012-12-19 湖南省电力公司永州道县电力局 Flexible connecting device for electrical test
CN202797302U (en) * 2012-09-21 2013-03-13 林阿成 Electrical circuit connecting piece
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

Also Published As

Publication number Publication date
CN104316736A (en) 2015-01-28

Similar Documents

Publication Publication Date Title
US8007312B2 (en) Modular test plug
CN103308832B (en) A kind of high-voltage cable insulating transition joint local discharge test device and using method
CN103323751B (en) A kind of high pressure stub cable insulation terminal local discharge test device and using method
CN103259215B (en) A kind of telescopic insulation rod device
CN102737828B (en) With the capacitance type potential transformer of transient over-voltage monitoring unit
CN101427325A (en) An elongated member and use thereof
CN101368995B (en) Non-head dismantling test method for GIS combined electrical apparatus and plug-pull type transformer
CN202749745U (en) Special-purpose grounding lead wire for intersecting interconnection box maintenance
CN104880652A (en) Switch cabinet live-line partial discharge test system and voltage signal extraction device thereof
CN102156242B (en) Method for testing transformer insulation combination
CN102798838B (en) Pluggable safety junction box for site calibration of electric energy meter
JP2008014773A (en) Voltage/current transformer
CN104335294A (en) Cable for powering of mast mounted radio equipment
CN105023644B (en) Tubular bus system
CN203883444U (en) Cable front connector
CN204989239U (en) Transformer test multipurpose plant of working a telephone switchboard
CA2831768C (en) Modular high voltage sensing unit
CN103257264A (en) Novel high-voltage electroscope for alternating currents and direct currents
CN204832314U (en) Measurement device for electric wire netting primary current
CN103983814B (en) Comprehensive test case for transformer
CN203734089U (en) Power wire coil for transformer station
CN202019056U (en) Power special voltage miniature bus wiring terminal
CN103337760B (en) CT, PT secondary short circuit line
CN203465297U (en) Grounding device for electrical testing
EP2804272A1 (en) Mobile unit for high- and medium-voltage electrical interconnection

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant