CN203275522U - Novel breaker loop resistor testing clamp - Google Patents

Novel breaker loop resistor testing clamp Download PDF

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Publication number
CN203275522U
CN203275522U CN 201320289123 CN201320289123U CN203275522U CN 203275522 U CN203275522 U CN 203275522U CN 201320289123 CN201320289123 CN 201320289123 CN 201320289123 U CN201320289123 U CN 201320289123U CN 203275522 U CN203275522 U CN 203275522U
Authority
CN
China
Prior art keywords
testing
contact fingers
loop resistor
novel breaker
testing clamp
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 - Lifetime
Application number
CN 201320289123
Other languages
Chinese (zh)
Inventor
张黎明
陈荣
王楠
张弛
李雪
孙成
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
Tianjin Electric Power Corp
Original Assignee
State Grid Corp of China SGCC
Tianjin Electric Power Corp
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, Tianjin Electric Power Corp filed Critical State Grid Corp of China SGCC
Priority to CN 201320289123 priority Critical patent/CN203275522U/en
Application granted granted Critical
Publication of CN203275522U publication Critical patent/CN203275522U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to a novel breaker loop resistor testing clamp. The novel breaker loop resistor testing clamp has the following main technical characteristics. The novel breaker loop resistor testing clamp is composed of a testing clamp body, a rigid spring coil, four contact fingers and four control handles. The four contact fingers are evenly distributed and installed around the testing clamp body via hinge shafts, the rigid spring coil is fastened on inner sides of the four contact fingers via central holes on the contact fingers, and the rigid spring coil is located between head portions of the contact fingers and the testing clamp body. Tail portions of the four contact fingers are connected with the four control handles, wherein two contact fingers are separately connected with a voltage testing wire and a current testing wire, the voltage testing wire and the current testing wire are led out through the control handles and used to be connected with a loop resistor testing instrument, and surfaces of the control handles are covered with an insulating material. The novel breaker loop resistor testing clamp has the advantages of improved testing accuracy, improved production efficiency, accurate and reliable test and usage convenience; and hidden troubles such as abnormal working, which is caused by poor contact between testing wires and contact fingers, of the loop resistor testing instrument or erroneous test data are prevented.

Description

A kind of novel breaker circuit resistance tester
Technical field
The utility model belongs to breaker technical field, especially a kind of novel breaker circuit resistance tester.
Background technology
Isolating switch is the important electrical equipment of electric system, needs the resistance value in Measurement accuracy loop in preventive trial and commissioning test.The resistance of isolating switch galvanic circle depends primarily on the contact resistance between the dynamic and static contact of isolating switch.Due to the existence of contact resistance, increased the loss of conductor when energising, the temperature of contact position is raise, the size of its value directly affects the current capacity when working, and affects to a certain extent the cut-out ability of short-circuit current.Therefore, the every phase of isolating switch galvanic circle resistance value is a significant data of isolating switch installation, maintenance and inspection of quality.For the isolating switch with Mume flower contact, especially comparatively common in switch cubicle, when measuring its loop resistance value, the quality that the pressure-wire of circuit resistance tester and electric current line contact with the isolating switch Mume flower contact, the accuracy of test figure will directly be affected, and the test wire of often using in current test pincers often can not meet the demands.In addition, for the Mume flower contact that insulating sheath is arranged, will bring very large difficulty if use the common test pincers to test.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of reasonable in design, accurately and reliably and novel breaker circuit resistance tester easy to use.
The utility model solves its technical matters and takes following technical scheme to realize:
A kind of novel breaker circuit resistance tester, formed by testing clamp body, rigidity turn, four fingertips and four control cranks, four fingertips are by the uniform surrounding that is arranged on the testing clamp body of hinge, the rigidity turn is arranged on four fingertip inboards by the center pit on fingertip, and this rigidity turn is between the head and testing clamp body of fingertip; The afterbody of four fingertips is connected with four control cranks, wherein two fingertips connect respectively a voltage tester line and a testing current line and draw by operating grip, this voltage tester line is connected with the testing current line and being connected of circuit resistance tester, and is provided with insulating material on the surface of control crank.
And the inner portion of described four fingertips is provided with sawtooth.
Advantage of the present utility model and good effect are:
The utility model can be realized the good contact of circuit resistance tester voltage tester line and testing current line and isolating switch plum blossom fingertip, test accuracy and production efficiency have greatly been improved, avoided causing the hidden danger such as circuit resistance tester cisco unity malfunction or test figure mistake because of p-wire and fingertip loose contact, have test accurately and reliably, the characteristics such as easy to use.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the right view of Fig. 1;
Wherein, 1: the testing clamp body; 2,3,4 and 5: fingertip; 6,7,8 and 9: control crank; 10: the rigidity turn; 11: hinge; 11: the testing current line; 12: the voltage tester line.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
A kind of novel breaker circuit resistance tester, as shown in Figure 1, formed by testing clamp body, rigidity turn, four fingertips and four control cranks, four fingertips are by the uniform surrounding that is arranged on the testing clamp body of hinge, the rigidity turn is arranged on four fingertip inboards by the center pit on fingertip, and this rigidity turn is between the head and testing clamp body of fingertip.The rigidity turn is in contraction state when not using, and therefore four fingertips close up; By operating grip, fingertip is opened in use, be enclosed within on the plum blossom fingertip of isolating switch, due to the shrinkability of rigidity turn and the zigzag design of fingertip, make contact gear ratio between the two more firm, four fingertips have actuating property arbitrarily, so this testing clamp has versatility to the Mume flower contact of different thicknesses.The inner portion of four fingertips is provided with sawtooth, the afterbody of four fingertips is connected with four control cranks, wherein two fingertips connect respectively a voltage tester line (carefully) and a testing current line (slightly) and draw by operating grip, this voltage tester line is connected with the testing current line and being connected of circuit resistance tester, surface at control crank is provided with insulating material, when using the utility model, can hold simultaneously four parallel control cranks, firmly shrink the distance between them, can reach adjusting contact finger dehisce the size purpose.
Using method of the present utility model is: at first, the voltage tester line that is connected in this testing clamp is connected with circuit resistance tester with the testing current line; Then, four control cranks of holding with a firm grip make four fingertips open, with the head nesting of four fingertips outside surface at isolating switch plum blossom fingertip; Thereby realize reliable connection the between circuit resistance tester p-wire and isolating switch plum blossom fingertip, last, use circuit resistance tester to carry out the test of isolating switch loop resistance, read experimental data.
It is emphasized that; embodiment described in the utility model is illustrative; rather than determinate; therefore the utility model comprises and is not limited to the embodiment described in embodiment; every by those skilled in the art according to other embodiments that the technical solution of the utility model draws, belong to equally the scope of the utility model protection.

Claims (2)

1. novel breaker circuit resistance tester, it is characterized in that: formed by testing clamp body, rigidity turn, four fingertips and four control cranks, four fingertips are by the uniform surrounding that is arranged on the testing clamp body of hinge, the rigidity turn is fixed on four fingertip inboards by the center pit on fingertip, and this rigidity turn is between the head and testing clamp body of fingertip; The afterbody of four fingertips is connected with four control cranks, wherein two fingertips connect respectively a voltage tester line and a testing current line and draw by operating grip, this voltage tester line is connected with the testing current line and being connected of circuit resistance tester, and is covered with insulating material on the surface of control crank.
2. a kind of novel breaker circuit resistance tester according to claim 1, it is characterized in that: the inner portion of described four fingertips is provided with sawtooth.
CN 201320289123 2013-05-24 2013-05-24 Novel breaker loop resistor testing clamp Expired - Lifetime CN203275522U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320289123 CN203275522U (en) 2013-05-24 2013-05-24 Novel breaker loop resistor testing clamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320289123 CN203275522U (en) 2013-05-24 2013-05-24 Novel breaker loop resistor testing clamp

Publications (1)

Publication Number Publication Date
CN203275522U true CN203275522U (en) 2013-11-06

Family

ID=49505899

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201320289123 Expired - Lifetime CN203275522U (en) 2013-05-24 2013-05-24 Novel breaker loop resistor testing clamp

Country Status (1)

Country Link
CN (1) CN203275522U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104316733A (en) * 2014-10-22 2015-01-28 国家电网公司 Testing clamp of switch cabinet breaker loop resistor
CN107656105A (en) * 2017-10-30 2018-02-02 广州供电局有限公司 Connection plug and circuit resistance tester
CN107703334A (en) * 2017-09-07 2018-02-16 武汉迪昌科技股份有限公司 Train Insulation monitoring special fixture
CN109444486A (en) * 2019-01-08 2019-03-08 国网山东省电力公司泰安供电公司 Testing clamp and central cabinet circuit breaker loop resistance test device
CN112701501A (en) * 2019-10-23 2021-04-23 国网天津市电力公司 Novel circuit breaker loop resistance tester joint

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104316733A (en) * 2014-10-22 2015-01-28 国家电网公司 Testing clamp of switch cabinet breaker loop resistor
CN104316733B (en) * 2014-10-22 2016-07-20 国家电网公司 Breaker of switch cabinet loop resistance test clamp
CN107703334A (en) * 2017-09-07 2018-02-16 武汉迪昌科技股份有限公司 Train Insulation monitoring special fixture
CN107656105A (en) * 2017-10-30 2018-02-02 广州供电局有限公司 Connection plug and circuit resistance tester
CN109444486A (en) * 2019-01-08 2019-03-08 国网山东省电力公司泰安供电公司 Testing clamp and central cabinet circuit breaker loop resistance test device
CN109444486B (en) * 2019-01-08 2024-05-24 国网山东省电力公司泰安供电公司 Test clamp and circuit breaker loop resistance test device of centrally installed switchgear
CN112701501A (en) * 2019-10-23 2021-04-23 国网天津市电力公司 Novel circuit breaker loop resistance tester joint
CN112701501B (en) * 2019-10-23 2022-08-09 国网天津市电力公司 Novel circuit breaker loop resistance tester joint

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C14 Grant of patent or utility model
GR01 Patent grant
CX01 Expiry of patent term

Granted publication date: 20131106

CX01 Expiry of patent term