CN206893418U - A kind of Transformer Bushing Tap earthing or grounding means of measurable earth current - Google Patents
A kind of Transformer Bushing Tap earthing or grounding means of measurable earth current Download PDFInfo
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- CN206893418U CN206893418U CN201720878323.XU CN201720878323U CN206893418U CN 206893418 U CN206893418 U CN 206893418U CN 201720878323 U CN201720878323 U CN 201720878323U CN 206893418 U CN206893418 U CN 206893418U
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- ground connection
- earth current
- measurable
- grounding means
- earthing
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Abstract
A kind of Transformer Bushing Tap earthing or grounding means of measurable earth current, covered including ground connection, ground connection lid is made up of two parts of mutually insulated, a part contacts with stem, another connects with the base being grounded, insulating barrier is provided between two parts of the ground connection lid, connecting ground wire between two parts is connected, and stem is contacted with ground connection lid by elastic component.A kind of Transformer Bushing Tap earthing or grounding means of measurable earth current of the utility model, the device have the advantages of three kinds of traditional earthing modes, and simple to operate, ground connection is reliably；And in transformer station high-voltage side bus, can be with measuring transformer bottom shielding of bushing earth current.
Description
Technical field
A kind of Transformer Bushing Tap earthing or grounding means of measurable earth current of the utility model, can in transformer station high-voltage side bus
With measuring transformer bottom shielding of bushing earth current.
Background technology
Bushing shell for transformer is a kind of important electrical equipment, and it can be such that the wire with high voltage and high current safely wears
Ground connection wall, oil tank wall or metal shell are crossed, is connected with other high voltage electric apparatus, it is that insulation and fixation are drawn that it, which is acted on,
Line.Sleeve pipe is made up of capacitor core, end shield, insulator, metal-ware and conductor.Capacitor core by multilayer mutually insulated aluminium foil layer
Composition, one layer of aluminium foil layer of outermost are referred to as end shield.In transformer station high-voltage side bus, the necessary reliable ground of end shield, it so can just make insulator table
Face electric field is acted on and is evenly distributed by internal capacitance fuse pressure, is played protection capacitor core and is improved sleeve pipe electrical insulation properties
Effect.
Traditional earthing mode of end shield is divided into external and built-in two kinds, and external ground connection is divided into by metal in flakes again
It is grounded and is grounded by metallic ground block.Be grounded in flakes by metal is that end shield lead-out wire passes through insulator to draw by stem
Terminal waits in flakes with grounded metal to be connected with base metal ground connection position, and advantage is：The earth current of end shield can be measured；Shortcoming
It is：Have a power failure check or experiment during demounting bolt easily cause the rotation of end shield stem, it is unreliable to cause to be grounded.Pass through metal
Block ground connection is that end shield stem is connected with ground connection lid, and ground connection lid is directly grounded, and advantage is：Simple to operate, ground connection is reliably；Shortcoming
It is that can not measure the earth current of end shield and be not easy to observe the ground connection situation of end shield, it is impossible to measure earth current.Built-in is logical
Spring ground sleeve ground connection is crossed, advantage is：Automatic earthing, personnel's carelessness is avoided to cause end shield unearthed；Shortcoming is spring pressure
When reduction or ground sleeve have bite with lead intercolumniation, cause end shield earth-free or ground connection is unreliable.
The content of the invention
For the advantage and disadvantage of three kinds of traditional earthing modes of Transformer Bushing Tap, the utility model provides one kind and can surveyed
The Transformer Bushing Tap earthing or grounding means of earth current is measured, the device has the advantages of three kinds of traditional earthing modes, simple to operate,
Ground connection is reliable；And in transformer station high-voltage side bus, can be with measuring transformer bottom shielding of bushing earth current.
The technical scheme that the utility model is taken is：
A kind of Transformer Bushing Tap earthing or grounding means of measurable earth current, including ground connection lid, ground connection lid is by mutually absolutely
Two parts composition of edge, the first insulated part is columned, is contacted with stem, and the second insulated part is cylindrical shape, with connecing
The base on ground connects, and is provided with insulating barrier between two parts of the ground connection lid, connecting ground wire between two parts is connected, and stem is with connecing
Ground lid is contacted by elastic component.
The ground connection lid is threadedly secured on base, and sealing ring is provided between ground connection lid and base.
The elastic component is spring leaf.
A kind of Transformer Bushing Tap earthing or grounding means of measurable earth current of the utility model, beneficial effect are：
（1）：In transformer station high-voltage side bus, transformation can effectively be monitored with the earth current of measuring transformer bottom shielding of bushing
The running situation of device sleeve pipe；
（2）：Earthing or grounding means is simple to operate, as long as ground connection is reliable, it is necessary to removing ground connection lid i.e. when end shield inspection and experiment
Can, end shield ground connection will not be caused unreliable.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model device.
Embodiment
As shown in figure 1, a kind of Transformer Bushing Tap earthing or grounding means of measurable earth current, including ground connection lid 1, ground connection
Lid 1 is made up of two parts of mutually insulated, and a part contacts with stem 7, and another connects with the base 6 being grounded, described to connect
Insulating barrier 3 is provided between two parts of ground lid 1, connecting ground wire 4 between two parts is connected, can be described in transformer station high-voltage side bus
It is grounded measurement bottom shielding of bushing earth current at 4.
Ground connection lid 1 is made up of two parts of mutually insulated, and the first insulated part 8 is columned, is contacted with stem 7；
Second insulated part 9 is cylindrical shape, is connected with the base 6 of ground connection.
Stem 7 is contacted with ground connection lid 1 by elastic component 2, and elastic component 2 is spring leaf.Need to end shield inspection and experiment
When, as long as removing ground connection lid 1, will not cause stem 7 rotate cause to be grounded it is unreliable.
The ground connection lid 1 is threadedly secured on base 6, and is grounded after being in contact by screw thread with base 6.Ground connection
Sealing ring 5 is provided between lid 1 and base 6, prevents moisture, dust etc. from entering the ground connection internal contamination end shield of lid 1.
Claims (3)
1. a kind of Transformer Bushing Tap earthing or grounding means of measurable earth current, including ground connection lid（1）, it is characterised in that：Connect
Ground lid（1）It is made up of two parts of mutually insulated, the first insulated part（8）To be columned, with stem（7）Contact；Second
Insulated part（9）For cylindrical shape, the base with ground connection（6）Connect, the ground connection lid（1）Two parts between be provided with insulating barrier（3）,
Ground wire is connected between two parts（4）It is connected, stem（7）Covered with ground connection（1）Pass through elastic component（2）Contact.
A kind of 2. Transformer Bushing Tap earthing or grounding means of measurable earth current according to claim 1, it is characterised in that：
The ground connection lid（1）It is threadedly secured to base（6）On, ground connection lid（1）With base（6）Between be provided with sealing ring（5）.
A kind of 3. Transformer Bushing Tap earthing or grounding means of measurable earth current according to claim 1, it is characterised in that：
The elastic component（2）For spring leaf.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720878323.XU CN206893418U (en) | 2017-07-19 | 2017-07-19 | A kind of Transformer Bushing Tap earthing or grounding means of measurable earth current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720878323.XU CN206893418U (en) | 2017-07-19 | 2017-07-19 | A kind of Transformer Bushing Tap earthing or grounding means of measurable earth current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206893418U true CN206893418U (en) | 2018-01-16 |
Family
ID=61296887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720878323.XU Active CN206893418U (en) | 2017-07-19 | 2017-07-19 | A kind of Transformer Bushing Tap earthing or grounding means of measurable earth current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206893418U (en) |
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2017
- 2017-07-19 CN CN201720878323.XU patent/CN206893418U/en active Active
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