CN207336609U - A kind of air ring main unit current sensor - Google Patents
A kind of air ring main unit current sensor Download PDFInfo
- Publication number
- CN207336609U CN207336609U CN201721463065.5U CN201721463065U CN207336609U CN 207336609 U CN207336609 U CN 207336609U CN 201721463065 U CN201721463065 U CN 201721463065U CN 207336609 U CN207336609 U CN 207336609U
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- CN
- China
- Prior art keywords
- phase sequence
- current sensor
- main unit
- sequence coil
- ring main
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- Transformers For Measuring Instruments (AREA)
Abstract
The utility model provides a kind of air ring main unit current sensor, including phase sequence coil, resin seal layer is packaged with the outside of phase sequence coil, wherein the output terminal of phase sequence coil is connected with power resistor by high temperature resistant wire, and wherein resin seal layer encapsulates high temperature resistant wire and power resistor inside it；Aviation plug is also associated with power resistor, and aviation plug is fixed on resin seal layer surface；Wherein phase sequence coil includes nanocrystalline iron core and silicon sheet core, and winding enameled wire outside iron core；Wherein phase sequence coil output is additionally provided with secondary shield line；Wherein derived connector is both provided with aviation plug and secondary shield line.The current sensor that the apparatus structure is simple, size is small, can reduce the space for taking environmentally friendly buoyance chamber.
Description
Technical field
The utility model belongs to current sensor design field；More particularly to a kind of air ring main unit current sense
Device.
Background technology
Based on the development of existing novel air insulation ring main unit, requirement to supporting internal component performance and structure into
Row improves, and meets present intelligent grid and miniaturization, modularization, and 2015 end of the year national grids propose to carry out electricity in intelligent grid
The application of minor mutual inductor, has in the case of one or two integration programs are proposed in the second half of last year, will more meet intelligent grid
Electronic mutual inductor is released, because existing conventional electromagnetic current transformer structure is complicated, volume is big, it is existing intelligent not meet
The installation space of air insulation ring main unit, it is not environmentally, also uneconomical.
Utility model content
The utility model provides a kind of air ring main unit current sensor, there is provided one kind is simple in structure, size is small
Current sensor, the space for taking environmentally friendly buoyance chamber can be reduced.
The technical solution of the utility model is：A kind of air ring main unit current sensor, including phase sequence coil, phase sequence line
Resin seal layer is packaged with the outside of circle, the output terminal of wherein phase sequence coil is connected with power resistor by high temperature resistant wire, wherein
Resin seal layer encapsulates high temperature resistant wire and power resistor inside it；Aviation plug, and aviation are also associated with power resistor
Plug is fixed on resin seal layer surface；Wherein phase sequence coil includes nanocrystalline iron core and silicon sheet core, and winding outside iron core
Enameled wire；Wherein phase sequence coil output is additionally provided with secondary shield line；Wherein it is respectively provided with aviation plug and secondary shield line
There is derived connector.
Further, the utility model is also characterized by：
The wherein diameter 0.44mm of enameled wire.
Wherein resin seal layer is epoxy resin sealing made of polyurethane.
Wherein the power of power resistor is 100W.
Wherein the cathode of phase sequence coil and negative outer are enclosed with insulating layer.
The outside of wherein current sensor is provided with ABS inflaming retarding shells.
Compared with prior art, the beneficial effects of the utility model are：The current sensor is by setting power resistor, phase
Zero sequence coil is eliminated compared with traditional electromagnetic transformer, and reduces the quantity of phase sequence coil, therefore is greatly reduced
Current transformer the space occupied, being capable of being combined by electronic component and electrical structure since its volume reduces
Mode, realize and the current transformer be built into cable accessory, should so that reducing current transformer takes cabinet space
Device precision is high, small, has a wide range of application.
Further, nanocrystalline iron core is used as metering or measurement in the device, and silicon sheet core is as protection
Part uses, and in the case of high current, silicon sheet core can also be used as measurement to use.
Further, resin seal layer can protect phase sequence coil and power resistor.
Further, current sensor is installed in ABS inflaming retarding shells, then built-in to be installed in cable accessory.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is that partial discharge contrast is the curve comparison figure of conventional electromagnetic current sensor and standard value under 300pc；
Fig. 3 is that partial discharge contrast is the curve comparison figure of the present apparatus and standard value under 20pc.
In figure：1 is phase sequence coil；2 be resin seal layer；3 be power resistor；4 be aviation plug；5 be high temperature resistant wire；6
For secondary shield line.
Embodiment
The technical solution of the utility model is further illustrated with specific embodiment below in conjunction with the accompanying drawings.
The utility model provides a kind of air ring main unit current sensor, as shown in Figure 1, including phase sequence coil 1, phase
The outside of sequence coil 1 is packaged with resin seal layer 2, and wherein resin seal layer 2 is made of the mixture of polyurethane and curing agent；Phase sequence
The output terminal of coil 1 is connected by high temperature resistant wire 7 with power resistor 3, and wherein high temperature resistant wire 7 is using SRV types 0.52Conducting wire,
The power of power resistor 3 is 100W；Wherein high temperature resistant wire 7 and power resistor 3 is encapsulated in resin seal layer 2, wherein resin
Secondary shield line 6 is additionally provided with inside sealing 2；The surface of resin seal layer 2 is further fixed on aviation plug 4, aviation plug 4 and power
Resistance 3 connects, and wherein aviation plug 4 is TY-16-2P type aviation plugs；It is both provided with aviation plug 4 and secondary shield line 6
Derived connector；Wherein aviation plug 4 is arranged on the outside of resin seal layer 2.
Further, wherein the cathode of phase sequence coil 1 and negative outer are enclosed with insulating layer, and resin seal layer 2 encapsulates
Outside insulating layer.
Further, the outside of the current transformer is additionally provided with ABS inflaming retarding shells, it is ABS material injection molding
Housing, further protective current mutual inductor.
Phase sequence coil 1 uses nanocrystalline iron core in the utility model, and coiling diameter is 0.44mm outside nanocrystalline iron core
Enameled wire.Using the current sensor of nanocrystalline iron core, metering or measurement can be used as to use.
Phase sequence coil 1 uses silicon sheet core in the utility model, and coiling diameter is 0.44mm outside silicon sheet core
Enameled wire.Using the current sensor of silicon sheet core, can position used for protection, can be used as when there is high current
Measurement uses.
The equipment process of the utility model current sensor is：Nanocrystalline iron core or silicon sheet core are removed, then using straight
The enameled wire that footpath is 0.44mm carries out coiling, and the number of turn of enameled wire coiling depending on the design of current sensor, complete by coiling
Afterwards, its precision is debugged by tester；Then the power resistor 3 of 100W is welded in the output terminal of phase sequence coil 1, and drawn
Cathode and anode, and using insulating layer parcel cathode and anode, specifically, including positive and negative anodes using insulation, then winding is exhausted
Edge crimped paper；Aviation socket 4 is connected with power resistor 3 at the same time；Then put it into ABS inflaming retarding shells, while using poly-
The mixture of urethane and curing agent is packaged between ABS inflaming retarding shells and phase sequence coil 1, is obtained outside phase sequence coil 1
Resin seal layer 2, resin seal layer 2 is at the same time packaged high temperature resistant wire 7 and power resistor 3.
As shown in Figures 2 and 3, the current sensor of the utility model and standard value and conventional electromagnetic current transformer with
The curve comparison figure of standard value, its specific contrast table are as follows：
Claims (6)
1. a kind of air ring main unit current sensor, it is characterised in that including phase sequence coil (1), the outside of phase sequence coil (1)
Resin seal layer (2) is packaged with, the wherein output terminal of phase sequence coil (1) is connected with power resistor (3) by high temperature resistant wire (7),
Wherein resin seal layer (2) encapsulates high temperature resistant wire (7) and power resistor (3) inside it；Power resistor is also associated with (3)
Aviation plug (4), and aviation plug (4) is fixed on resin seal layer (2) surface；Wherein phase sequence coil (1) includes nanocrystalline iron core
Or silicon sheet core, and winding enameled wire outside iron core；Wherein phase sequence coil (1) output terminal is additionally provided with secondary shield line (6)；
Wherein derived connector is both provided with aviation plug (4) and secondary shield line (6).
2. air ring main unit current sensor according to claim 1, it is characterised in that the diameter of institute's enameled wire
0.44mm。
3. air ring main unit current sensor according to claim 1, it is characterised in that the resin seal layer (2) is
Epoxy resin sealing made of polyurethane.
4. air ring main unit current sensor according to claim 1, it is characterised in that the power resistor (3)
Power is 100W.
5. air ring main unit current sensor according to claim 1, it is characterised in that the phase sequence coil (1)
Cathode and negative outer are enclosed with insulating layer.
6. air ring main unit current sensor according to claim 1, it is characterised in that outside the current sensor
Portion is provided with ABS inflaming retarding shells.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721463065.5U CN207336609U (en) | 2017-11-06 | 2017-11-06 | A kind of air ring main unit current sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721463065.5U CN207336609U (en) | 2017-11-06 | 2017-11-06 | A kind of air ring main unit current sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207336609U true CN207336609U (en) | 2018-05-08 |
Family
ID=62364318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721463065.5U Active CN207336609U (en) | 2017-11-06 | 2017-11-06 | A kind of air ring main unit current sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207336609U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108761198A (en) * | 2018-05-29 | 2018-11-06 | 湖北大二互科技股份有限公司 | Ring main unit electronic type gage probe |
| CN109687313A (en) * | 2018-12-26 | 2019-04-26 | 环欧电气有限公司 | It is fused into lantern ring net cage one or two times |
-
2017
- 2017-11-06 CN CN201721463065.5U patent/CN207336609U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108761198A (en) * | 2018-05-29 | 2018-11-06 | 湖北大二互科技股份有限公司 | Ring main unit electronic type gage probe |
| CN109687313A (en) * | 2018-12-26 | 2019-04-26 | 环欧电气有限公司 | It is fused into lantern ring net cage one or two times |
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