CN103680897B - A kind of solid insulation ring main unit Current Transformer - Google Patents
A kind of solid insulation ring main unit Current Transformer Download PDFInfo
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- CN103680897B CN103680897B CN201310606058.6A CN201310606058A CN103680897B CN 103680897 B CN103680897 B CN 103680897B CN 201310606058 A CN201310606058 A CN 201310606058A CN 103680897 B CN103680897 B CN 103680897B
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- isolated bus
- sleeve pipe
- insert seat
- primary winding
- isolated
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- Transformers For Measuring Instruments (AREA)
Abstract
The present invention relates to a kind of solid insulation ring main unit Current Transformer, including the iron core being integrally cast in epoxy package, primary winding and secondary coil, described epoxy package is provided with isolated bus sleeve pipe and isolated bus set pipe insert seat, the end of incoming cables of primary winding is connected to isolated bus sleeve pipe or isolated bus set pipe insert seat is interior in exposing state, the leading-out terminal of primary winding is connected to isolated bus set pipe insert seat or isolated bus sleeve pipe is interior in exposing state, and isolated bus sleeve outer wall is corresponding shape of coincideing with isolated bus sleeve pipe socket inner walls.Its simple in construction, compact, volume is little, installs, easy to maintenance, is conducive to saving installing space in switch cubicle, improves insulating properties and usage safety performance.
Description
Technical field
The present invention relates to current transformer, a kind of make high-tension measurement or solid insulation ring main unit Current Transformer used for relay protection.
Background technology
It is currently used for 35kV and following electric pressure switch cabinet current transformer, its primary winding into and out of line terminals and switch cabinet one-time line electric conductor be exposed connection in gas medium, under duty, current transformer is high potential at two ends, and it is to realize insulation by air insulated between electronegative potential parts in switch cubicle, in order to ensure enough dielectric strengths, air insulated required distance is high, necessarily causes the volume of transformer to increase；Leading-out terminal of current transformer is connected by bolt with the high-pressure side of switch cubicle and is connected, and under the trend of switch cubicle gradually miniaturization, installing/dismounting space is more and more less, and working service is highly inconvenient；Additionally, Potential distribution between transformer high potential and electronegative potential is at current transformer outer surface, Potential distribution does not allow staff to touch or close to transformer in running status, Danger Electric shock risk otherwise can occur, in order to ensure the personal safety of staff, prevent the generation of accidental shock accident, prior art generally arranges electronegative potential division board outside current transformer, the space that electronegative potential division board takies switch cubicle is big, there is also installation, the problem of demolition and maintenance inconvenience.
Summary of the invention
For above-mentioned deficiency of the prior art, the invention provides a kind of simple in construction, compact, volume is little, installs, easy to maintenance, is conducive to saving installing space in switch cubicle, improving insulating properties and the solid insulation ring main unit Current Transformer of usage safety performance.
The technical solution used in the present invention is: a kind of solid insulation ring main unit Current Transformer, including the ferrum heart being integrally cast in epoxy package, primary winding and secondary coil, its technical characterstic is that described epoxy package is provided with isolated bus sleeve pipe and isolated bus set pipe insert seat, the end of incoming cables of primary winding is connected to isolated bus sleeve pipe or isolated bus set pipe insert seat is interior in exposing state, the leading-out terminal of primary winding is connected to isolated bus set pipe insert seat or isolated bus sleeve pipe is interior in exposing state, isolated bus sleeve outer wall is corresponding shape of coincideing with isolated bus sleeve pipe socket inner walls.
Further, described isolated bus sleeve pipe and isolated bus set pipe insert seat are correspondingly arranged in epoxy package outer wall both sides respectively.
Further, primary winding into and out of line end be connected in isolated bus sleeve pipe or isolated bus set pipe insert seat inside and outside dew Primary Conductor.
Further, the outer wall of described isolated bus sleeve pipe or the inwall of isolated bus set pipe insert seat are provided with elastic insulated parietal layer.
Further, described isolated bus sleeve outer wall is tapered, and isolated bus sleeve pipe socket inner walls is inverted cone shape.
Further, the non-exposed end of described Primary Conductor is in obturating plug is fixedly connected on isolated bus sleeve pipe or isolated bus set pipe insert seat, and obturating plug is fixedly connected on isolated bus sleeve pipe or isolated bus set pipe insert seat through bolt and felt pad.
Further, the Primary Conductor exposed junction into and out of line end of described primary winding is identical state convex, recessed.
Yet further, described epoxy package is externally provided with metal level.
Using technique scheme, the present invention reaches to provide the benefit that:
1, entering of current transformer primary winding, leading-out terminal is respectively designed to isolated bus sleeve pipe, isolated bus sleeve pipe socket, isolated bus sleeve pipe overlaps the tapered shape of pipe insert seat with isolated bus, in installation process, entering of primary winding, the Primary Conductor exposed junction of leading-out terminal is attached forming the current path once closed with isolated bus sleeve pipe in switch cubicle or isolated bus set pipe insert seat, taper plugs together docking quickly, accurately, stable, it is close to connect without bolt lock, it is easy to install in compact switch cubicle space, disassembling section, be conducive to reducing switch cubicle volume；
2, on isolated bus sleeve outer wall, isolated bus sleeve pipe socket inner walls, elastic insulated parietal layer is set, substantially increase between high pressure primary conductive part and switch cabinet equipment electronegative potential parts and dielectric strength that high pressure is alternate, be conducive to improving insulating properties and stable connection performance；
3、
Outside epoxy resin poured body shell, metal level is set, metal level is connected with the earthing screw of transformer and makes the outer surface of transformer be directly grounded, the outer surface of transformer is in zero potential, the safety achieving transformer is tangible, additionally ring main unit can consider that high-pressure side holds insulation distance over the ground in the design, makes the miniaturization of ring main unit be possibly realized.
The present invention is by the isolated bus sleeve pipe and the isolated bus set pipe insert seat that are arranged to cone-shaped into and out of line end of primary winding, the connection that plugs together of isolated bus corresponding to switch cubicle set pipe insert seat and isolated bus sleeve pipe realizes closed path path, its simple in construction, compact, volume is little, install, easy to maintenance, be conducive to saving installing space in switch cubicle, improve and plug together firm performance, insulating properties and usage safety performance.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram.
In figure: epoxy package 1, primary winding 2, secondary coil 3, isolated bus sleeve pipe 4, an inlet wire conductor 5, isolated bus set pipe insert seat 6, an outlet conductor 7, obturating plug 8, felt pad 9, elastic insulated parietal layer 10.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
nullShown in Fig. 1，A kind of solid insulation ring main unit Current Transformer includes the iron core being integrally cast in epoxy package 1、Primary winding 2 and secondary coil 3，Epoxy package 1 both sides are provided with isolated bus sleeve pipe 4 and isolated bus set pipe insert seat 6，It is interior in exposing state that one time, the end of incoming cables of primary winding 2 inlet wire conductor 5 is connected to isolated bus sleeve pipe 4，The leading-out terminal of primary winding 2 in outlet conductor 7 is connected to isolated bus set pipe insert seat 6 in exposing state，Isolated bus sleeve pipe 4 is in frustum，Isolated bus set pipe insert seat 6 inwall is back taper mesa-shaped，Isolated bus sleeve pipe 4 is corresponding with the shape of isolated bus set pipe insert seat 6 to coincide，The inwall of isolated bus set pipe insert seat 6 is equipped with elastic insulated parietal layer 10，One end of outlet conductor 7 is exposed in isolated bus set pipe insert seat 6，The other end is through obturating plug 8，Felt pad 9 is fixing connects isolated bus set pipe insert seat 6.
Claims (2)
1. a solid insulation ring main unit Current Transformer, including the iron core being integrally cast in epoxy package, primary winding and secondary coil, it is characterized in that: described epoxy package is provided with isolated bus sleeve pipe and isolated bus set pipe insert seat, the end of incoming cables of primary winding is connected to isolated bus sleeve pipe or isolated bus set pipe insert seat is interior in exposing state, and the leading-out terminal of primary winding is connected to isolated bus set pipe insert seat or isolated bus sleeve pipe is interior in exposing state；Described isolated bus sleeve outer wall is tapered, and isolated bus sleeve pipe socket inner walls is inverted cone shape, and isolated bus sleeve outer wall is corresponding shape of coincideing with isolated bus sleeve pipe socket inner walls；The inwall of the outer wall of described isolated bus sleeve pipe or isolated bus set pipe insert seat is provided with elastic insulated parietal layer；Described epoxy package is externally provided with metal level；Described primary winding into and out of line end be connected in isolated bus sleeve pipe or isolated bus set pipe insert seat inside and outside dew Primary Conductor；The non-exposed end of described Primary Conductor is in obturating plug is fixedly connected on isolated bus sleeve pipe or isolated bus set pipe insert seat, and obturating plug is fixedly connected on isolated bus sleeve pipe or isolated bus set pipe insert seat through bolt and felt pad；The Primary Conductor exposed junction into and out of line end of described primary winding is identical state convex, recessed.
A kind of solid insulation ring main unit Current Transformer the most according to claim 1, is characterized in that: described isolated bus sleeve pipe and isolated bus set pipe insert seat are correspondingly arranged in epoxy package outer wall both sides respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310606058.6A CN103680897B (en) | 2013-11-26 | 2013-11-26 | A kind of solid insulation ring main unit Current Transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310606058.6A CN103680897B (en) | 2013-11-26 | 2013-11-26 | A kind of solid insulation ring main unit Current Transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103680897A CN103680897A (en) | 2014-03-26 |
| CN103680897B true CN103680897B (en) | 2016-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310606058.6A Active CN103680897B (en) | 2013-11-26 | 2013-11-26 | A kind of solid insulation ring main unit Current Transformer |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113674976B (en) * | 2021-07-27 | 2023-08-18 | 四川宝光电器设备有限公司 | Integrated current transformer, circuit breaker comprising same and control method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201781192U (en) * | 2010-08-05 | 2011-03-30 | 广西银河迪康电气有限公司 | Electric energy metering cabinet |
| CN203118754U (en) * | 2013-01-22 | 2013-08-07 | 上海雷博司电气股份有限公司 | Current mutual inductor for ring main unit |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3982973B2 (en) * | 2000-03-07 | 2007-09-26 | 東光電気株式会社 | Current transformer |
| CN201780863U (en) * | 2010-07-22 | 2011-03-30 | 广西银河迪康电气有限公司 | Solid insulation current transformer |
| CN202084416U (en) * | 2011-02-16 | 2011-12-21 | 江苏靖江互感器厂有限公司 | Voltage transformer with metal material sprayed on outer surface |
| CN203552917U (en) * | 2013-11-26 | 2014-04-16 | 江苏科兴电器有限公司 | Current transformer for solid-insulation ring main unit |
-
2013
- 2013-11-26 CN CN201310606058.6A patent/CN103680897B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201781192U (en) * | 2010-08-05 | 2011-03-30 | 广西银河迪康电气有限公司 | Electric energy metering cabinet |
| CN203118754U (en) * | 2013-01-22 | 2013-08-07 | 上海雷博司电气股份有限公司 | Current mutual inductor for ring main unit |
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| CN103680897A (en) | 2014-03-26 |
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