RU2012128342A - COAXIAL THREE-PHASE HEATING CABLE - Google Patents
COAXIAL THREE-PHASE HEATING CABLE Download PDFInfo
- Publication number
- RU2012128342A RU2012128342A RU2012128342/07A RU2012128342A RU2012128342A RU 2012128342 A RU2012128342 A RU 2012128342A RU 2012128342/07 A RU2012128342/07 A RU 2012128342/07A RU 2012128342 A RU2012128342 A RU 2012128342A RU 2012128342 A RU2012128342 A RU 2012128342A
- Authority
- RU
- Russia
- Prior art keywords
- cores
- cable
- outer conductors
- common protective
- sectional shape
- Prior art date
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract 3
- 239000004020 conductor Substances 0.000 claims abstract 8
- 230000001681 protective effect Effects 0.000 claims abstract 6
- 238000009413 insulation Methods 0.000 claims abstract 4
- 239000002184 metal Substances 0.000 claims abstract 4
- 239000012774 insulation material Substances 0.000 claims abstract 2
Landscapes
- Insulated Conductors (AREA)
- Resistance Heating (AREA)
Abstract
1. Кабель нагревательный коаксиальный трехфазный, включающий три жилы, каждая из которых покрыта внешней герметичной термоэлектроизоляционной оболочкой, имеет внутренний и наружный проводники, последовательно соединенные между собой и коаксиально размещенные с кольцевым зазором между ними, и внутреннюю термоэлектроизоляционную оболочку, заполняющую этот кольцевой зазор, и общую защитную оболочку, в которую заключены указанные три жилы, отличающийся тем, что жилы скручены между собой и идентичны, общая защитная оболочка имеет три слоя, нижний и верхний из которых выполнены из герметичного термоэлектроизоляционного материала, а средний слой - в виде металлической проволочной оплетки с возможностью ее заземления в месте подключения кабеля к электрической сети и в месте последовательного соединения внутреннего и наружного проводников жил, причем наружные проводники каждой жилы соединены между собой в конечной точке и образуют искусственную нулевую точку, электрически не связанную с нулевым проводом электрической сети.2. Кабель по п.1, отличающийся тем, что форма поперечного сечения нижнего слоя общей защитной оболочки с внешней стороны ограничена металлической проволочной оплеткой среднего слоя, а с внутренней - замкнутой кривой, соответствующей форме поперечного сечения скрутки жил кабеля.1. A three-phase coaxial heating cable, comprising three conductors, each of which is coated with an external sealed thermoelectric insulation sheath, has inner and outer conductors connected in series with each other and coaxially placed with an annular gap between them, and an inner thermoelectric insulation sheath that fills this annular gap, and a common protective shell in which these three cores are enclosed, characterized in that the cores are twisted together and are identical, the common protective shell has three layers , the lower and upper of which are made of sealed thermoelectric insulation material, and the middle layer is in the form of a metal wire braid with the possibility of grounding it at the point where the cable is connected to the electric network and at the place of consecutive connection of the inner and outer conductors of the cores, the outer conductors of each core being connected between themselves at the end point and form an artificial zero point that is not electrically connected to the zero wire of the electrical network. 2. The cable according to claim 1, characterized in that the cross-sectional shape of the lower layer of the common protective sheath is limited on the outside by a metal wire braid of the middle layer, and on the inside by a closed curve corresponding to the cross-sectional shape of the twisted cable strands.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2012128342/07A RU2516219C2 (en) | 2012-07-06 | 2012-07-06 | Coaxial three-phase heating cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2012128342/07A RU2516219C2 (en) | 2012-07-06 | 2012-07-06 | Coaxial three-phase heating cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RU2012128342A true RU2012128342A (en) | 2014-01-20 |
| RU2516219C2 RU2516219C2 (en) | 2014-05-20 |
Family
ID=49944696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU2012128342/07A RU2516219C2 (en) | 2012-07-06 | 2012-07-06 | Coaxial three-phase heating cable |
Country Status (1)
| Country | Link |
|---|---|
| RU (1) | RU2516219C2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2589553C1 (en) * | 2015-03-12 | 2016-07-10 | Михаил Леонидович Струпинский | Heating cable based on skin effect, heating device and method of heating |
| RU178429U1 (en) * | 2017-08-21 | 2018-04-04 | Акционерное Общество "ТЕЛЕКОМ-СТВ" | PHOTOELECTRIC REINFORCED FLEXIBLE MODULE |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5558794A (en) * | 1991-08-02 | 1996-09-24 | Jansens; Peter J. | Coaxial heating cable with ground shield |
| AU4847700A (en) * | 1999-05-14 | 2000-12-05 | Asuk Technologies, Llc | Electrical heating devices and resettable fuses |
| RU2236769C2 (en) * | 2002-07-25 | 2004-09-20 | Степанчук Георгий Николаевич | Coaxial heating cable |
| GB0716201D0 (en) * | 2007-08-11 | 2007-09-26 | Thermocable Flexible Elements | Heating cable |
-
2012
- 2012-07-06 RU RU2012128342/07A patent/RU2516219C2/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| RU2516219C2 (en) | 2014-05-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | The patent is invalid due to non-payment of fees |
Effective date: 20150707 |