CN201142265Y - Isolation transformer capable of making live conductor have no current to ground to protect personal safety - Google Patents
Isolation transformer capable of making live conductor have no current to ground to protect personal safety Download PDFInfo
- Publication number
- CN201142265Y CN201142265Y CNU2007200795273U CN200720079527U CN201142265Y CN 201142265 Y CN201142265 Y CN 201142265Y CN U2007200795273 U CNU2007200795273 U CN U2007200795273U CN 200720079527 U CN200720079527 U CN 200720079527U CN 201142265 Y CN201142265 Y CN 201142265Y
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- China
- Prior art keywords
- coil
- iron core
- transformer
- secondary coil
- ground
- 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.)
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Links
- 239000004020 conductor Substances 0.000 title claims abstract description 9
- 238000002955 isolation Methods 0.000 title abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000004804 winding Methods 0.000 claims abstract description 7
- 229910000976 Electrical steel Inorganic materials 0.000 claims abstract description 3
- 229910052573 porcelain Inorganic materials 0.000 claims abstract description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 2
- 239000002828 fuel tank Substances 0.000 claims description 2
- 239000011810 insulating material Substances 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 230000007935 neutral effect Effects 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 12
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to an enable electrified conductor to have no electric current with the isolation transformer of protection personal safety to ground, including iron core, coil, oil tank, conservator, desiccator, insulating porcelain sleeve pipe, support, main component such as cooling tube constitute. The iron core is formed by interleaving and overlapping mutually insulated silicon steel sheets, the primary coil and the secondary coil are sleeved outside the iron core column, and the primary coil and the secondary coil are insulated and also insulated with the iron core. The winding direction can be clockwise or anticlockwise, but in the same transformer, the winding directions of the primary coil and the secondary coil are required to be consistent. The method is characterized in that: the ratio of the number of turns of the primary coil winding to the secondary coil winding is 1: 1 or 1: 3. The beneficial effects of the utility model reside in that: be applied to special environment in, guaranteed personal and property safety, secondly, guaranteed the safety of main transformer and generator, because the neutral point of main transformer and generator has all protected and has met zero earthing device, even there is the thunder and lightning can not harm yet.
Description
Affiliated technical field
The utility model relate to a kind of can make energized conductor over the ground no current with the protection personal safety isolating transformer.
Background technology
In industrial and mineral, the power supply that uses is all from main transformer or generator, main transformer outputs to factory floor or down-hole, mine by circuit after high-tension electricity (10KV) is become 380V voltage or 660V, charger equipment uses, generator powered is like this too, and this is a kind of method and technology of routine.For fear of thunder and lightning transformer and generator are caused damage, just on transformer and generator neutral point, be connected to protection connecting to neutral ground connection.Yet in actual use, some electric shock accidentss have appearred, particularly particularly outstanding under the mine, reason is that the power utilization environment under the mine is abominable, the electric wire ground connection (electric leakage) of breaking easily, will form the loop by the neutral point of the earth and transformer or generator like this, all can cause life to threaten to therebetween people and livestock, in mine, can produce electric arc (spark) especially, the gas that ignites causes great disaster.In view of the situation, governments at all levels and relevant industries authorities rectify little safety of coal mines check in regulation " forbid by the transformer of ground neutral-point solid ground or generator " directly to underground power supply used, so, the interim method that present stage adopts is to make the neutral point of main transformer and generator all earth-free, but having done three unfavorable factors like this exists: the first, and thunder and lightning break easily transformer or generator; The second, the neutral point of transformer and generator is " displacement " easily, causes imbalance of three-phase voltage and burns out electric equipment; The 3rd, based on preceding two kinds of situations, make enterprise produce existing direct economic loss, again can not ordinary production.
Summary of the invention
The purpose of this utility model provides and a kind ofly can guarantee personal safety, can effectively prevent again transformer or generator by the isolating transformer of the bad special use of thunderbolt to remedy the deficiency of prior art.
The purpose of this utility model be achieved in that a kind of can make energized conductor over the ground no current comprise iron core, coil, fuel tank, conservator, dehydrating breather with the isolating transformer of protection personal safety, insulating porcelain bushing, support, main members such as radiating tube are formed.Iron core builds up with the silicon steel sheet of mutually insulated is staggered, and primary and secondary coil all is enclosed within the iron core column outside, insulate between them and iron core also insulate.Coil is with circle or one or a few coiled of flat type copper wire (or aluminum steel) of being surrounded by insulating material.The coiling direction by clockwise or counterclockwise can, but in same transformer, elementary and primary coil, secondary and secondary coil around to necessary consistent.It is characterized in that: the ratio of primary coil winding and secondary coil umber of turn is 1: 1 or 1: 3.
What deserves to be explained is: isolating transformer is the currentless over the ground safe controller switching equipment of a kind of metal tape electric conductor of output, be in order to solve shared transformer in ground and down-hole or generator directly to underground power supply used and must cancel a kind of safety-type equipment that neutral point and live metal conductor must not have electric current over the ground, that is to say that this method is electricity consumption under the mine and the isolation safely for a full due of ground using electricity system, eliminated the potential safety hazard of neutral ground, the down-hole miner personal safety has been played important function.
The coil of isolating transformer connects: the primary coil of isolating transformer and secondary coil all divide star-like (Y) or two kinds of methods of attachment of triangle (△), divide one or more several modes of connection again in these two kinds of methods, most employing one tunnel mode of connection commonly used.In same isolating transformer, the head and tail of its three-phase primary coil (head end and end) can be put upside down simultaneously to exchange and be connected use.Overall primary coil of concluding isolating transformer has four kinds of methods of attachment, and secondary coil has four kinds of methods of attachment too.As following table institute:
Again according to incoming call (power supply) voltage height different (330V or 660V) and the needs that are subjected to electricity (electricity consumption) equipment voltage height different (380V or 660V), the primary and secondary coil of each four kinds of method of attachment that can this is different respectively becomes to have 16 kinds of methods of attachment at least by the connection group combined crosswise of transformer, and is as shown below:
The beneficial effects of the utility model are: be specifically applied in the particular environment, the person and property safety have been guaranteed, ground connection (electric leakage) as after taking place in the energized conductor of ground or down-hole, because isolating transformer secondary coil (output) does not have neutral ground, so can not constitute the loop, not have potential safety hazard by the earth.Secondly, guaranteed the safety of main transformer and generator, because the neutral point of main transformer and generator has all had protection connecting to neutral earthing device, even there is thunder and lightning also can not damage.
By embodiment, the utility model is described in further detail below in conjunction with accompanying drawing:
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
In the drawings,
1 is main transformer, and 2 is isolating transformer, and 3 is power transmission line, and 4 is standby generator
Embodiment
Embodiment:
After main transformer 1 becomes high-tension electricity into 380V or 660V, deliver to the primary coil of isolating transformer 2 by power transmission line 3, according to electromagnetic induction with the secondary coil of electric induction, because the elementary secondary winding circle book ratio of isolating transformer is 1: 1 or 1: 3 at isolating transformer.So isolating transformer 2 outputs to factory floor or mine use down with the electricity of 380V or 660V by power transmission line 3 again.The conveying method for electrically of stand-by generator 4 is identical with the method for main transformer 1.
The neutral point of main transformer or generator is connected to protection connecting to neutral ground connection, after being concentrated by thunder and lightning, thunder and lightning can be transferred to the earth, can be not bad by thunderbolt to guarantee main transformer 1 or generator 4.
If the power transmission line 3 under factory floor or the mine breaks after the ground connection (electric leakage), because the secondary coil of isolating transformer 2 does not have neutral ground, so can not constitute the loop by the earth, just no current over the ground so just can not constitute the person and injure.
Claims (1)
1, a kind of can make energized conductor over the ground no current with the protection personal safety isolating transformer, by iron core, coil, fuel tank, conservator, dehydrating breather, insulating porcelain bushing, support, radiating tube is formed at interior main member, and iron core builds up with the silicon steel sheet of mutually insulated is staggered, and primary and secondary coil all is enclosed within the iron core column outside, insulate between them and iron core also insulate; Coil is with circle or flat type copper wire or one or a few coiled of aluminum steel of being surrounded by insulating material; The coiling direction by clockwise or counterclockwise can, but in same transformer, elementary and primary coil, secondary and secondary coil around to necessary consistent; It is characterized in that: the ratio of primary coil winding and secondary coil umber of turn is 1: 1 or 1: 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200795273U CN201142265Y (en) | 2007-05-11 | 2007-05-11 | Isolation transformer capable of making live conductor have no current to ground to protect personal safety |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200795273U CN201142265Y (en) | 2007-05-11 | 2007-05-11 | Isolation transformer capable of making live conductor have no current to ground to protect personal safety |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201142265Y true CN201142265Y (en) | 2008-10-29 |
Family
ID=40069975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200795273U Expired - Fee Related CN201142265Y (en) | 2007-05-11 | 2007-05-11 | Isolation transformer capable of making live conductor have no current to ground to protect personal safety |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201142265Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103065773A (en) * | 2011-10-24 | 2013-04-24 | 中国科学院微电子研究所 | Low-noise switching power supply transformer and low-noise switching power supply |
-
2007
- 2007-05-11 CN CNU2007200795273U patent/CN201142265Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103065773A (en) * | 2011-10-24 | 2013-04-24 | 中国科学院微电子研究所 | Low-noise switching power supply transformer and low-noise switching power supply |
| CN103065773B (en) * | 2011-10-24 | 2016-03-30 | 中国科学院微电子研究所 | Low-noise switching power supply transformer and low-noise switching power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081029 Termination date: 20140511 |
|
| EXPY | Termination of patent right or utility model |