CN204117833U - A kind of outdoor individual event metering current voltage combination transformer - Google Patents
A kind of outdoor individual event metering current voltage combination transformer Download PDFInfo
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- CN204117833U CN204117833U CN201420413442.4U CN201420413442U CN204117833U CN 204117833 U CN204117833 U CN 204117833U CN 201420413442 U CN201420413442 U CN 201420413442U CN 204117833 U CN204117833 U CN 204117833U
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Abstract
A kind of outdoor individual event metering current voltage combination transformer, comprises three voltage transformers with no-load voltage ratio and three current transformers with no-load voltage ratio; All be positioned at the epoxy resin poured body of one moulding by casting, current transformer comprises electric current primary winding, and electric current primary winding is arranged with current ferric core, and two ends are connected with a terminal, current ferric core are wound with electric current secondary coil; Arrange voltage transformer below each current transformer, voltage transformer comprises voltage iron core, and voltage iron core is wound with voltage primary winding and voltage secondary coil from the inside to the outside successively; The voltage primary winding of each voltage transformer is connected with terminal for the current transformer be positioned at above this voltage transformer through wire; The bottom of epoxy resin poured body is fixed with base, and base is provided with ground connection inserts; Three voltage transformers form star connection and are connected with ground connection inserts; It is simple that the utility model has structure, and volume is little, easy for installation, and capacity is large, resistance to electric arc, anti-pollution, and uvioresistant is anti-aging, the features such as long service life.
Description
Technical field
The utility model relates to power system device, specifically a kind of outdoor individual event metering current voltage combination transformer.
Background technology
In order to ensure the safety and economic operation of electric power system, monitoring and measuring must be carried out to the ruuning situation of power equipment.But general measurement and protective device directly can not access a high-tension apparatus; but need the large voltage of primary system to convert small voltage by a certain percentage to, convert big current to small area analysis according to a certain percentage, resupply measuring instrument and protective device use.Voltage and current is carried out ratio conversion by usual employing combination transformer.
The insulation of instrument transformer is by following several mode: gas-insulated, oil immersed type insulate, wherein gas-insulated is the insulation that employing airing form carries out between the inner each parts of instrument transformer, and oil immersed type insulation is the oil-filled insulation realized between the inner each parts of instrument transformer in instrument transformer, inflation, oil-filled insulation mode are easily revealed, and pollute, oil-filled insulation is easy initiation fire also, for ensureing safe operation, must carry out test Measuring error to instrument transformer every year, maintenance is large, costly.After introduce outdoor poured with epoxy resin from external, alleviate a lot in maintenance; But existing product structure more complicated, volume is large, and production cost is high, installs inconvenient.
Utility model content
The utility model proposes a kind of outdoor individual event metering current voltage combination transformer, with to solve in prior art instrument transformer volume large, inconvenience, complex structure, high in cost of production problem are installed.
The technical solution of the utility model is achieved in that
A kind of outdoor individual event metering current voltage combination transformer, comprises three voltage transformers with no-load voltage ratio and three current transformers with no-load voltage ratio;
Described current transformer comprises electric current primary winding, and described electric current primary winding two ends are connected with a terminal, described electric current primary winding is arranged with current ferric core, described current ferric core is wound with electric current secondary coil;
Arrange voltage transformer described in below each current transformer, described voltage transformer comprises voltage iron core, and described voltage iron core is wound with voltage primary winding and voltage secondary coil from the inside to the outside successively;
Described current transformer and voltage transformer are positioned at the epoxy resin poured body of one moulding by casting, and be provided with silicone rubber sleeve outside described epoxy resin poured body, described silicone rubber sleeve surface is provided with full skirt;
A described terminal is positioned at the top of the both sides, front and back of described silicone rubber sleeve, and the voltage primary winding of each voltage transformer is connected with terminal for the current transformer be positioned at above this voltage transformer through wire;
The bottom of described epoxy resin poured body is fixed with base, and described base is provided with ground connection inserts; Described three voltage transformers form star connection and are connected with described ground connection inserts;
The bottom of the front side of described silicone rubber sleeve is provided with terminal board, is provided with secondary wiring terminals in described terminal board, and described electric current secondary coil is connected with described secondary wiring terminals by wire with voltage secondary coil;
Described terminal board is provided with sheet for bottle lid; Described terminal board bottom is provided with wire hole.
Further, described current ferric core is nanocrystalline alloy cores.
Further, a described terminal surfaces is silver coated.
Further, described silicone rubber sleeve is without seam silicone rubber sleeve.
The beneficial effects of the utility model are:
Outdoor individual event metering current voltage combination transformer of the present utility model, one-body molded by poured with epoxy resin, have structure simple, volume is little, easy for installation, and capacity is large, resistance to electric arc, anti-pollution, and uvioresistant is anti-aging, the features such as long service life.Reach the effect of three-phase line single-phase measurement, measuring accuracy is good.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the side structure schematic diagram of the utility model embodiment;
Fig. 2 is the Facad structure schematic diagram of Fig. 1 embodiment.
In figure:
1, electric current primary winding; 2, a terminal; 3, current ferric core; 4, electric current secondary coil; 5, voltage iron core; 6, voltage primary winding; 7, voltage secondary coil; 8, epoxy resin poured body; 9, silicone rubber sleeve; 10, full skirt; 11, base; 12, ground connection inserts; 13, terminal board; 14, secondary wiring terminals; 15, sheet for bottle lid; 16, wire hole.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As Figure 1-Figure 2, the outdoor individual event metering current voltage combination transformer in the present embodiment, comprises three voltage transformers with no-load voltage ratio and three current transformers with no-load voltage ratio; Described current transformer comprises electric current primary winding 1, and described electric current primary winding 1 two ends are connected with a terminal 2, and described electric current primary winding 1 is arranged with current ferric core 3, and described current ferric core 3 is wound with electric current secondary coil 4; Arrange voltage transformer described in below each current transformer, described voltage transformer comprises voltage iron core 5, and described voltage iron core 5 is wound with voltage primary winding 6 and voltage secondary coil 7 from the inside to the outside successively; Described current transformer and voltage transformer are positioned at the epoxy resin poured body 8 of one moulding by casting, and be provided with silicone rubber sleeve 9 outside described epoxy resin poured body 8, described silicone rubber sleeve 9 surface is provided with full skirt 10; A described terminal 2 is positioned at the top of the both sides, front and back of described silicone rubber sleeve 9, and the voltage primary winding 6 of each voltage transformer is connected with terminal 2 for the current transformer be positioned at above this voltage transformer through wire; The bottom of described epoxy resin poured body 8 is fixed with base 11, and described base 11 is provided with ground connection inserts 12; Described three voltage transformers form star connection and are connected with described ground connection inserts 12; The bottom of the front side of described silicone rubber sleeve 9 is provided with terminal board 13, is provided with secondary wiring terminals 14 in described terminal board 13, and described electric current secondary coil 4 is connected with described secondary wiring terminals 14 by wire with voltage secondary coil 7; Described terminal board 13 is provided with sheet for bottle lid 15; Described terminal board 13 bottom is provided with wire hole 16.
In the present embodiment, described current ferric core 3 is nanocrystalline alloy cores.Described terminal 2 surface is silver coated, anti-oxidant and reduce contact resistance.Described silicone rubber sleeve 9 is without seam silicone rubber sleeve.
The present embodiment has following characteristics:
High-precision measuring: current transformer adopts ultramicro-crystal alloy as permeability magnetic material, and measuring accuracy can reach 0.2S level, and error is close to zero, even if when power load is very little, also can reach enough measuring accuracies.In addition, voltage transformer measure winding can adopt polytropic ratio structure, and can meet the needs that power load increases, voltage transformer can reach 0.2 grade.
Adopt import fluid silicone rubber to do external insulation, there is resistance to electric arc, uvioresistant, the feature of resistance to filth and long service life.Silicon rubber also has hydrophobicity, can long-term non-maintaining operation, and after avoiding epoxy resin poured body 8 long operational time, the problem of UV resistant difference and oil immersion type mutual-inductor need the long-term trouble safeguarded.Adopt epoxy resin to do interior insulation, effectively improve the resistance to low temperature of product, ambient temperature range during normal operation can reach between-45 degrees Celsius-+45 degrees Celsius.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (4)
1. an outdoor individual event metering current voltage combination transformer, is characterized in that: comprise three voltage transformers with no-load voltage ratio and three current transformers with no-load voltage ratio;
Described current transformer comprises electric current primary winding, and described electric current primary winding two ends are connected with a terminal, described electric current primary winding is arranged with current ferric core, described current ferric core is wound with electric current secondary coil;
Arrange voltage transformer described in below each current transformer, described voltage transformer comprises voltage iron core, and described voltage iron core is wound with voltage primary winding and voltage secondary coil from the inside to the outside successively;
Described current transformer and voltage transformer are positioned at the epoxy resin poured body of one moulding by casting, and be provided with silicone rubber sleeve outside described epoxy resin poured body, described silicone rubber sleeve surface is provided with full skirt;
A described terminal is positioned at the top of the both sides, front and back of described silicone rubber sleeve, and the voltage primary winding of each voltage transformer is connected with terminal for the current transformer be positioned at above this voltage transformer through wire;
The bottom of described epoxy resin poured body is fixed with base, and described base is provided with ground connection inserts; Described three voltage transformers form star connection and are connected with described ground connection inserts;
The bottom of the front side of described silicone rubber sleeve is provided with terminal board, is provided with secondary wiring terminals in described terminal board, and described electric current secondary coil is connected with described secondary wiring terminals by wire with voltage secondary coil;
Described terminal board is provided with sheet for bottle lid; Described terminal board bottom is provided with wire hole.
2. a kind of outdoor individual event metering current voltage combination transformer as claimed in claim 1, is characterized in that: described current ferric core is nanocrystalline alloy cores.
3. a kind of outdoor individual event metering current voltage combination transformer as claimed in claim 1, is characterized in that: a described terminal surfaces is silver coated.
4. a kind of outdoor individual event metering current voltage combination transformer as claimed in claim 1, is characterized in that: described silicone rubber sleeve is without seam silicone rubber sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420413442.4U CN204117833U (en) | 2014-07-24 | 2014-07-24 | A kind of outdoor individual event metering current voltage combination transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420413442.4U CN204117833U (en) | 2014-07-24 | 2014-07-24 | A kind of outdoor individual event metering current voltage combination transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204117833U true CN204117833U (en) | 2015-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420413442.4U Expired - Fee Related CN204117833U (en) | 2014-07-24 | 2014-07-24 | A kind of outdoor individual event metering current voltage combination transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204117833U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106898485A (en) * | 2017-02-13 | 2017-06-27 | 国网山东省电力公司蓬莱市供电公司 | Power transformation transformer group |
| CN107192974A (en) * | 2017-07-19 | 2017-09-22 | 云南电网有限责任公司电力科学研究院 | Integration voltage current standard transformer |
| CN108962574A (en) * | 2018-06-04 | 2018-12-07 | 湖北大二互科技股份有限公司 | Modularization combined transformers for metering |
| CN109360712A (en) * | 2018-11-27 | 2019-02-19 | 保定天威互感器有限公司 | A kind of transformer external current mutual inductor and its application method |
-
2014
- 2014-07-24 CN CN201420413442.4U patent/CN204117833U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106898485A (en) * | 2017-02-13 | 2017-06-27 | 国网山东省电力公司蓬莱市供电公司 | Power transformation transformer group |
| CN107192974A (en) * | 2017-07-19 | 2017-09-22 | 云南电网有限责任公司电力科学研究院 | Integration voltage current standard transformer |
| CN107192974B (en) * | 2017-07-19 | 2023-06-09 | 云南电网有限责任公司电力科学研究院 | Integrated voltage and current standard transformer |
| CN108962574A (en) * | 2018-06-04 | 2018-12-07 | 湖北大二互科技股份有限公司 | Modularization combined transformers for metering |
| CN108962574B (en) * | 2018-06-04 | 2023-10-03 | 湖北大二互科技股份有限公司 | Modular combined transformer for metering |
| CN109360712A (en) * | 2018-11-27 | 2019-02-19 | 保定天威互感器有限公司 | A kind of transformer external current mutual inductor and its application method |
| CN109360712B (en) * | 2018-11-27 | 2023-10-17 | 保定天威互感器有限公司 | External current transformer for transformer and application method thereof |
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| 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: 20150121 Termination date: 20160724 |
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| CF01 | Termination of patent right due to non-payment of annual fee |