CN105977001A - 10 kV automatic grounding alternating current transformer - Google Patents
10 kV automatic grounding alternating current transformer Download PDFInfo
- Publication number
- CN105977001A CN105977001A CN201610566213.XA CN201610566213A CN105977001A CN 105977001 A CN105977001 A CN 105977001A CN 201610566213 A CN201610566213 A CN 201610566213A CN 105977001 A CN105977001 A CN 105977001A
- Authority
- CN
- China
- Prior art keywords
- transformer
- bushing
- high voltage
- relay
- winding
- 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.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
Abstract
The invention relates to a 10 kV automatic grounding alternating current transformer which comprises a transformer body, an iron core, a winding, a high voltage bushing, a low voltage input terminal, a high voltage output terminal, a measuring terminal, a grounding terminal and a test power supply, wherein the winding is wound around the iron core and immersed in oil of the transformer, and an outgoing line of the winding is connected with the high voltage output terminal after penetrating the high voltage bushing; a short circuit bar is arranged in the high voltage bushing, one end of the short circuit bar stretches out of the high voltage bushing and is connected with a relay, the relay is connected with the grounding terminal by an electromagnet, and an automatic transfer switch is arranged between the electromagnet and the test power supply. According to the transformer, the relay and the electromagnet are arranged, the electromagnet is closed when charged and the transformer is grounded automatically, and artificial grounding of the transformer is avoided. At the same time, the relay and the electromagnet are integrated in a casing, the casing is detachably connected to the outside of the high voltage bushing by a connection rod, disassembly, maintenance and replacement are convenient, the casing can be connected with different test transformers, and the cost is reduced.
Description
Technical field
The present invention relates to a kind of testing transformer, particularly relate to a kind of 10kV automatic earthing AC transformer.
Background technology
When carrying out ac voltage withstanding test, it is desirable to have obvious ground connection in the high-pressure side of testing transformer after off-test.At present, it is all artificially earth lead to be costed, if but at this moment due to test maloperation, experiment power supply is not returned to zero-bit, and pressure regulator has output, testing transformer high-pressure side to have High voltage output, if at this moment earth lead being taken testing transformer, it is the formation of the short circuit to testing transformer.All there is potential safety hazard in the person and equipment.
Summary of the invention
The present invention is directed to above-mentioned problems of the prior art, it is provided that a kind of 10kV automatic earthing AC transformer, solving testing transformer in prior art can not the problem of automatic earthing.
Technical scheme is as follows:
10kV automatic earthing AC transformer, including device body, iron core, winding, bushing, low pressure, input end, high voltage output terminal, measurement terminal, ground terminal and experiment power supply, winding is wrapped on iron core in immersion transformer oil, and winding leading-out wire connects high voltage output terminal through bushing；Short-circuit rods is arranged in bushing, and short-circuit rods one end is stretched out bushing and is connected with relay, and relay connects ground terminal by electric magnet, is provided with automatic transfer switch between electric magnet and experiment power supply.
Described relay and electric magnet are integrated in housing, and housing is detachably connected with the outside at bushing by connecting rod.
The top of described bushing is provided with uniform ball.
Described bushing outer surface has corrosion-inhibiting coating.
Being provided with support bottom described device body, support is connected by rotating shaft universal wheel.
Advantages of the present invention effect is as follows:
1, transformator is by arranging relay, electric magnet, and electric magnet charging closes then transformator automatic earthing, it is to avoid transformator artificial earthing.Meanwhile, relay and electric magnet are integrated in housing, and housing is detachably connected with the outside at bushing, convenient dismounting, convenient maintenance and replacement by connecting rod, and can connect from different testing transformers, reduces cost；And the length of earth lead can be adjusted according to different testing transformers.
2, it is coated with corrosion-inhibiting coating outside bushing, extends the service life of bushing.
3, it is provided with support bottom device body, and connects universal wheel by rotating shaft, during carrying, universal wheel can be rotated the lower section to support, it is simple to carrying, during work, universal round be risen, prop up and mount ground, add transformator steadiness.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
In figure, 1, device body, 2, bushing, 3, low pressure, input end, 4, high voltage output terminal, 5, measurement terminal, 6, ground terminal, 7, relay, 8, electric magnet, 9, universal wheel.
Detailed description of the invention
As shown in the figure, 10kV automatic earthing AC transformer, including device body 1, iron core, winding, bushing 2, low pressure, input end 3, high voltage output terminal 4, measurement terminal 5, ground terminal 6 and experiment power supply, winding is wrapped on iron core in the transformer oil immersed within device body, and winding leading-out wire connects high voltage output terminal 4 through bushing 2；Short-circuit rods is arranged in bushing, and short-circuit rods one end is stretched out bushing and is connected with relay 7, and relay connects ground terminal 6 by electric magnet 8, is provided with automatic transfer switch between electric magnet and experiment power supply.
Described relay and electric magnet are integrated in housing, and housing is detachably connected with the outside at bushing by connecting rod.
The top of described bushing is provided with uniform ball；Described bushing outer surface has corrosion-inhibiting coating.
Being provided with support bottom described device body, support is connected by rotating shaft universal wheel 9.
By arranging automatic transfer switch, after off-test, can be achieved with automatic earthing by electric magnet charging connection, in the case of experiment power supply does not disconnects, grounding device ground connection is inoperative.
Claims (5)
1.10kV automatic earthing AC transformer, including device body, iron core, winding, bushing, low pressure, input end, high voltage output terminal, measurement terminal, ground terminal and experiment power supply, winding is wrapped on iron core in immersion transformer oil, and winding leading-out wire connects high voltage output terminal through bushing；It is characterized in that short-circuit rods is arranged in bushing, short-circuit rods one end is stretched out bushing and is connected with relay, and relay connects ground terminal by electric magnet, is provided with automatic transfer switch between electric magnet and experiment power supply.
10kV automatic earthing AC transformer the most according to claim 1, it is characterised in that described relay and electric magnet are integrated in housing, and housing is detachably connected with the outside at bushing by connecting rod.
10kV automatic earthing AC transformer the most according to claim 1, it is characterised in that the top of described bushing is provided with uniform ball.
10kV automatic earthing AC transformer the most according to claim 1, it is characterised in that described bushing outer surface has corrosion-inhibiting coating.
10kV automatic earthing AC transformer the most according to claim 1, it is characterised in that be provided with support bottom described device body, support is connected by rotating shaft and has universal wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610566213.XA CN105977001A (en) | 2016-07-19 | 2016-07-19 | 10 kV automatic grounding alternating current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610566213.XA CN105977001A (en) | 2016-07-19 | 2016-07-19 | 10 kV automatic grounding alternating current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105977001A true CN105977001A (en) | 2016-09-28 |
Family
ID=56951843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610566213.XA Pending CN105977001A (en) | 2016-07-19 | 2016-07-19 | 10 kV automatic grounding alternating current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105977001A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000258488A (en) * | 1999-03-10 | 2000-09-22 | Nippon Denki Constr Kk | Short-circuit test device and method thereof |
| CN202870134U (en) * | 2012-06-15 | 2013-04-10 | 上海蓝波高电压技术设备有限公司 | Three-phase automatic earthing device |
| CN203071247U (en) * | 2013-01-25 | 2013-07-17 | 厦门国毅科技有限公司 | High voltage automatic grounding device |
| CN204422710U (en) * | 2015-03-13 | 2015-06-24 | 武汉市合众电气设备制造有限公司 | A kind of oil-immersed type testing transformer |
| CN205301509U (en) * | 2016-01-08 | 2016-06-08 | 李少帅 | Convenient to use's testing transformer |
| CN205810555U (en) * | 2016-07-19 | 2016-12-14 | 国家电网公司 | 10kV automatic earthing AC transformer |
-
2016
- 2016-07-19 CN CN201610566213.XA patent/CN105977001A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000258488A (en) * | 1999-03-10 | 2000-09-22 | Nippon Denki Constr Kk | Short-circuit test device and method thereof |
| CN202870134U (en) * | 2012-06-15 | 2013-04-10 | 上海蓝波高电压技术设备有限公司 | Three-phase automatic earthing device |
| CN203071247U (en) * | 2013-01-25 | 2013-07-17 | 厦门国毅科技有限公司 | High voltage automatic grounding device |
| CN204422710U (en) * | 2015-03-13 | 2015-06-24 | 武汉市合众电气设备制造有限公司 | A kind of oil-immersed type testing transformer |
| CN205301509U (en) * | 2016-01-08 | 2016-06-08 | 李少帅 | Convenient to use's testing transformer |
| CN205810555U (en) * | 2016-07-19 | 2016-12-14 | 国家电网公司 | 10kV automatic earthing AC transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160928 |