CN202693622U - Power transformer test connecting device - Google Patents
Power transformer test connecting device Download PDFInfo
- Publication number
- CN202693622U CN202693622U CN 201220268479 CN201220268479U CN202693622U CN 202693622 U CN202693622 U CN 202693622U CN 201220268479 CN201220268479 CN 201220268479 CN 201220268479 U CN201220268479 U CN 201220268479U CN 202693622 U CN202693622 U CN 202693622U
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Abstract
The utility model discloses a power transformer test connecting device. The device comprises two leads, shielding layers, shielding layer grounding terminals, measuring terminals and a pair of wiring pincers, wherein insulating layers wrap the leads; the leads consist of wire cores wrapped by the insulating layers; the shielding layers wrap the lead shielding layers; the shielding layer grounding terminals are connected with the shielding layers; the measuring terminals are connected with one end of each of the wire cores; and the pair of wiring pincers is connected with the other end of each of the wire cores. When the device is used for testing direct-current resistance, insulating resistance and dielectric loss for a power transformer in the same process, only the connection between the measuring terminals and test equipment is required to be replaced, a measuring wire is not required to be replaced in high altitude, the high-altitude operation time is shortened, and the working efficiency and the safety factor are improved.
Description
Technical field
The utility model relates to the power transformer technical field of measurement and test, more particularly, relates to a kind of power transformer test connecting apparatus.
Background technology
Power transformer is the nucleus equipment of electric system, need to regularly carry out routine test with the state of checkout equipment, guarantees the safety of electrical network.Wherein, direct current resistance test, megger test and dielectric loss test event have taken the test period that surpasses half.
At present, when carrying out above-mentioned three kinds of tests, for different tests, need to adopt different test connecting apparatus that power transformer is connected with testing apparatus, for example: when carrying out the direct current resistance test, need select the test connecting apparatus that satisfies the direct current resistance test; When carrying out megger test, the test connecting apparatus that needs again to satisfy the direct current resistance test changes the test connecting apparatus that satisfies megger test into, therefore, need repeatedly to carry out connection and the dismounting of different test connecting apparatus in test process, complicated operation, activity duration are long; And the connection of test connecting apparatus and dismounting work are all finished in the air at height, and safety coefficient is lower.
The utility model content
In view of this, the utility model provides a kind of power transformer test connecting apparatus, realizing convenient, fast, safe power transformer is linked to each other with checkout equipment, thereby realizes power transformer is carried out different tests.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of power transformer test connecting apparatus comprises:
By the wire that two cores that are enclosed with respectively insulation course form, described wire is wrapped with insulation course;
Be wrapped in the outer screen layer of described wire insulation;
The shielding layer grounding terminal that is connected with described screen layer;
The measurement terminal that is connected with described core one end;
The jointing clamp that is connected with the described core other end.
Further, the core of described wire is the copper core.
Further, the sectional area of described copper core is 2.5mm
2
Further, described measurement terminal comprises:
Slot, line nose and terminal insulating layer; Wherein:
Described terminal insulating layer is socketed in outside the described slot;
Described line nose one end and slot are fixedly linked.
Further, described line nose is U-shaped line nose.
Can find out from above-mentioned technical scheme, the disclosed a kind of power transformer coupling arrangement of the utility model, at same process power transformer is carried out the direct current resistance test, when megger test and dielectric loss test, only need at first link to each other the jointing clamp of test connecting apparatus respectively with each test point of power transformer, and then according to different test needs measurement terminal is linked to each other with corresponding testing tool, when test need to prevent duplex wire over the ground or metal shell when discharge, the shielding layer grounding terminal that only needs to link to each other with screen layer is connected to the ground and can meets the demands, therefore, when different tests, only need to change being connected of measurement terminal and testing apparatus, and need not in the air test connecting apparatus to be changed at height, shorten the work high above the ground time, improved work efficiency and safety coefficient.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the disclosed a kind of power transformer test connecting apparatus structural representation of the utility model embodiment;
Fig. 2 is the cross-sectional view of measurement terminal among Fig. 1.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is a part of embodiment of the present utility model, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
The utility model embodiment discloses a kind of power transformer test connecting apparatus, realizing convenient, fast, safe power transformer is linked to each other with checkout equipment, thereby power transformer is carried out different tests.
As shown in Figure 1, the disclosed a kind of power transformer test connecting apparatus of embodiment comprises:
By the wire 2 that two cores 6 that are enclosed with respectively insulation course form, described wire 2 is wrapped with insulation course;
Be wrapped in the outer screen layer 3 of described wire 2 insulation courses;
The shielding layer grounding terminal 5 that is connected with described screen layer 3;
The measurement terminal 4 that is connected with described core 2 one ends;
The jointing clamp 1 that is connected with described core 2 other ends.
In the above-described embodiments, when carrying out the DC resistance of power transformer test, by jointing clamp 1 is connected with power transformer, when after jointing clamp 1 is opened, being connected with power transformer, the core 6 of wire 2 is separated from each other, mutually insulated, has satisfied the needs of double bridge experiment in the direct current resistance test experiments, therefore, by with measurement terminal 4 with after instrument for measuring DC resistance is connected, can carry out the test of DC resistance of power transformer;
When carrying out electric power transformer insulated resistance test, by screen layer terminal 5 is connected with ground, prevented wire 2 over the ground or the discharge such as metal shell, satisfied the insulating requirements of power transformer when megger test, therefore, by jointing clamp 1 is connected with power transformer, measurement terminal 4 can be carried out electric power transformer insulated resistance test with after insulation resistance meter is connected;
When carrying out the test of power transformer dielectric loss, by screen layer terminal 5 is connected with ground, prevented wire 2 over the ground or the discharge such as metal shell, reduce simultaneously space electric field and disturbed the impact that dielectric loss is tested, therefore, by jointing clamp 1 is connected with power transformer, measurement terminal 4 can be carried out electric power transformer insulated resistance test with after the insulation dielectric loss tester is connected;
In sum, at same process power transformer is carried out the direct current resistance test, when megger test and dielectric loss test, only need at first link to each other the jointing clamp 1 of test connecting apparatus respectively with each test point of power transformer, and then according to different test needs measurement terminal 4 is linked to each other with corresponding testing tool, when test need to prevent wire 2 over the ground or metal shell when discharge, the shielding layer grounding terminal 5 that only needs to link to each other with screen layer 3 is connected to the ground and can meets the demands, therefore, when different tests, only need to change being connected of measurement terminal 4 and testing apparatus, and need not in the air test connecting apparatus to be changed at height, shorten the work high above the ground time, improved work efficiency and safety coefficient.
Preferably, the core 6 of wire 2 is the copper core.
Preferably, the sectional area of copper core is 2.5mm
2
Since adopted sectional area be the copper core of 2.5mm2 as the core of wire 2, satisfied the needs of testing 10A exciting current in the quick response process at direct current resistance.
Another embodiment of the present utility model also discloses the cross-sectional view of measurement terminal, as shown in Figure 2, comprising:
Terminal insulating layer 43 is socketed in outside the slot 41;
Preferably, line nose 42 is U-shaped line nose.
Concrete, terminal insulating layer 43 is socketed in outside the slot 41, has played insulating effect, so that safer when using measurement terminal; Line nose 42 1 ends and slot 41 are fixedly linked, so that can well switch between duplex wire and the testing apparatus in the process of test; Line nose 42 adopts U-shaped line nose in addition, more convenient being connected with testing apparatus of energy; Slot 41 can also adopt extendible slot.
For clearer explanation the utility model, the below describes take the 500kV single-phase autotransformer as example.
When power transformer being carried out direct current resistance test, megger test and dielectric loss test, need altogether five cover test connecting apparatus, the jointing clamp with each test connecting apparatus before the test is connected to high-pressure side (hereinafter being designated as A), intermediate voltage terminal (hereinafter being designated as M), high-pressure side neutral point (hereinafter being designated as O) and low-pressure side output terminal (hereinafter being designated as a, x).
When carrying out the test of high pressure winding D.C. resistance, two measurement terminal of high-pressure side A duplex wire are connected to respectively C1, the P1 end of instrument for measuring DC resistance, two measurement terminal of high pressure neutral point O end duplex wire are connected to respectively P2, the C2 end of instrument for measuring DC resistance, wherein C1, P1, P2, C2 are four terminals of double bridge, the shielding layer grounding terminal need not ground connection, can test by the rules requirement after the unsettled placement of duplex wire of other three covers test connecting apparatus.Carrying out low pressure winding D.C. resistance when test and above-mentioned test in like manner, do not repeat them here.
When carrying out the low pressure winding to the megger test on high, middle pressure winding and ground, hold the four measuring terminal of duplex wire to be connected to simultaneously the high-voltage output end of insulation resistance meter a, the x of low-pressure side output terminal, shielding layer grounding terminal ground connection can be tested by the rules requirement after the equal ground connection of all measurement terminal that duplex wires of other three covers test connecting apparatus connect to prevent duplex wire over the ground or the discharge such as metal shell.Carrying out high, medium and low voltage winding insulation resistance over the ground, high, middle pressure winding to the low pressure winding and ground megger test the time and above-mentioned test in like manner, do not repeat them here.
When carrying out high, middle pressure winding to the dielectric dissipation factor test on low pressure winding and ground, six measurement terminal of high-pressure side A, intermediate voltage terminal M, high-pressure side neutral point O end duplex wire are connected to the high-pressure side of the dielectric loss electric bridge of dielectric loss tester simultaneously, shielding layer grounding terminal ground connection in case the principal vertical line material over the ground or the discharge such as metal shell, can test by the rules requirement after the equal ground connection of all measurement terminal that other two duplex wires connect.Carrying out the dielectric loss test of low pressure winding to high, middle pressure winding and ground, during over the ground the dielectric loss test of high, medium and low voltage winding and above-mentioned test in like manner, do not repeat them here.
Each embodiment adopts the mode of going forward one by one to describe in this instructions, and what each embodiment stressed is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from spirit or scope of the present utility model, in other embodiments realization.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220268479 CN202693622U (en) | 2012-06-07 | 2012-06-07 | Power transformer test connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220268479 CN202693622U (en) | 2012-06-07 | 2012-06-07 | Power transformer test connecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202693622U true CN202693622U (en) | 2013-01-23 |
Family
ID=47549223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220268479 Expired - Lifetime CN202693622U (en) | 2012-06-07 | 2012-06-07 | Power transformer test connecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202693622U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301299A (en) * | 2015-11-30 | 2016-02-03 | 杭州西湖电子研究所 | Near potential tapping test wiring clamp |
| CN106093485A (en) * | 2016-08-03 | 2016-11-09 | 国网电力科学研究院武汉南瑞有限责任公司 | Copper-line device for electric power equipment on-site test |
| CN106771394A (en) * | 2016-12-16 | 2017-05-31 | 国家电网公司 | A kind of power transformer test mode of connection |
| CN107807258A (en) * | 2017-09-26 | 2018-03-16 | 杭州西湖电子研究所 | A kind of cable connector with double shield function |
| CN111220826A (en) * | 2019-12-05 | 2020-06-02 | 国网河南省电力公司南阳供电公司 | An integrated transformer test device for transformer electrical test |
-
2012
- 2012-06-07 CN CN 201220268479 patent/CN202693622U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301299A (en) * | 2015-11-30 | 2016-02-03 | 杭州西湖电子研究所 | Near potential tapping test wiring clamp |
| CN105301299B (en) * | 2015-11-30 | 2018-05-29 | 杭州西湖电子研究所 | A kind of nearly current potential tap test jointing clamp |
| CN106093485A (en) * | 2016-08-03 | 2016-11-09 | 国网电力科学研究院武汉南瑞有限责任公司 | Copper-line device for electric power equipment on-site test |
| CN106093485B (en) * | 2016-08-03 | 2018-11-30 | 国网电力科学研究院武汉南瑞有限责任公司 | Copper-line device for electric power equipment on-site test |
| CN106771394A (en) * | 2016-12-16 | 2017-05-31 | 国家电网公司 | A kind of power transformer test mode of connection |
| CN107807258A (en) * | 2017-09-26 | 2018-03-16 | 杭州西湖电子研究所 | A kind of cable connector with double shield function |
| CN107807258B (en) * | 2017-09-26 | 2023-04-28 | 杭州西湖电子研究所 | Cable connector with double shielding function |
| CN111220826A (en) * | 2019-12-05 | 2020-06-02 | 国网河南省电力公司南阳供电公司 | An integrated transformer test device for transformer electrical test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Yongdong Inventor after: Wu Siyuan Inventor after: Zhou Ranran Inventor after: Mao Ting Inventor after: Wang Jun Inventor after: Zhang Wei Inventor after: Shang Lixin Inventor after: Zhang Guoliang Inventor after: Zhang Jianxing Inventor after: Liu Shuyong Inventor after: Yu Guanchao Inventor before: Zhang Wei |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: ZHANG WEI TO: LI YONGDONG MAO TING WANG JUN ZHANG WEI SHANG LIXIN ZHANG GUOLIANG ZHANG JIANXING LIU SHUYONG YU GUANCHAO WU SIYUAN ZHOU RANRAN |
|
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Yongdong Inventor after: Liu Shuyong Inventor after: Wu Siyuan Inventor after: Zhou Ranran Inventor after: Mao Ting Inventor after: Wang Jun Inventor after: Zhang Wei Inventor after: Shang Lixin Inventor after: Zhang Guoliang Inventor after: Zhang Jianxing Inventor after: Jiang Guohua Inventor after: Yu Guanchao Inventor before: Li Yongdong Inventor before: Wu Siyuan Inventor before: Zhou Ranran Inventor before: Mao Ting Inventor before: Wang Jun Inventor before: Zhang Wei Inventor before: Shang Lixin Inventor before: Zhang Guoliang Inventor before: Zhang Jianxing Inventor before: Liu Shuyong Inventor before: Yu Guanchao |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LI YONGDONG MAO TING WANG JUN ZHANG WEI SHANG LIXIN ZHANG GUOLIANG ZHANG JIANXING LIU SHUYONG YU GUANCHAO WU SIYUAN ZHOU RANRAN TO: LI YONGDONG MAO TING WANG JUN ZHANG WEI SHANG LIXIN ZHANG GUOLIANG ZHANG JIANXING JIANG GUOHUA YU GUANCHAO LIU SHUYONG WU SIYUAN ZHOU RANRAN |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130123 |