CN107749341A - A kind of current transformer that powered display signal can be provided - Google Patents
A kind of current transformer that powered display signal can be provided Download PDFInfo
- Publication number
- CN107749341A CN107749341A CN201710968409.6A CN201710968409A CN107749341A CN 107749341 A CN107749341 A CN 107749341A CN 201710968409 A CN201710968409 A CN 201710968409A CN 107749341 A CN107749341 A CN 107749341A
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- CN
- China
- Prior art keywords
- low
- voltage capacitance
- current transformer
- winding
- line
- 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
- 238000004804 winding Methods 0.000 claims abstract description 33
- 239000003990 capacitor Substances 0.000 claims abstract description 16
- 238000009413 insulation Methods 0.000 claims abstract description 15
- 239000004020 conductor Substances 0.000 claims abstract description 10
- 238000000605 extraction Methods 0.000 claims abstract description 5
- 239000000919 ceramic Substances 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/32—Circuit arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
Abstract
A kind of current transformer that can provide powered display signal, insulation shell is interior to be provided with side and secondary side.Side time includes first winding and two terminal blocks, and two secondary magnetic cores are covered in first winding, have secondary winding on each magnetic core.The first terminal blocks pass through the high-pressure side that the first conductor connects high-voltage capacitance, the low-pressure end of high-voltage capacitance is connected with the high-pressure side of low-voltage capacitance, on line among extraction derided capacitors between the low-pressure end of high-voltage capacitance and the high-pressure side of low-voltage capacitance, the low-pressure end of low-voltage capacitance draws low-voltage capacitance end on line, the common connect band electric signal output terminal in end of on line among extraction wire in the on line of low-voltage capacitance end, the end of wire and derided capacitors.Current transformer primary voltage is used principle of capacitive divider by a set of derided capacitors, it is converted into instruction warning end of the small voltage signal by circuit reflection to the instrument face plate of switch cubicle, make staff's intuitive judgment current transformer electriferous state, be easy to keep the safety in production.
Description
Technical field
The invention belongs to current transformer field, more particularly to a kind of Current Mutual Inductance that powered display signal can be provided
Device.
Background technology
Ordinary electric current mutual-inductor is arranged on inside cabinet in use, current transformer can only be entered by observation window
Row visual inspection and current parameters record is carried out by ammeter, in addition the electriferous state of body or by the electricity in circuit
Press transformer to show, can not intuitively reflect current transformer electriferous state in maintenance.
The content of the invention
It is an object of the invention to provide a kind of current transformer that can provide powered display signal, conversion electricity can be provided
Signal is pressed, show ontology electriferous state, personal security can be ensured in maintenance.
The technical scheme of use is：
A kind of current transformer that powered display signal can be provided, including insulation shell.
Side time and secondary side are provided with insulation shell.
Side time includes first winding, and first winding both sides connect the first terminal blocks and the second terminals respectively
Row.
It is arranged with No. the first two magnetic cores in first winding, the first secondary winding is arranged with No. the first two magnetic cores.
It is arranged with No. the second two magnetic cores in first winding, the second secondary winding is arranged with No. the second two magnetic cores.One or two
Secondary winding output end and the connection corresponding with secondary terminals of the second secondary winding output end.
Technical points are：
The first one times terminal block also passes through the high-pressure side that the first conductor connects high-voltage capacitance, the low-pressure end and low tension of high-voltage capacitance
The high-pressure side series connection of appearance, draws on line among derided capacitors between the low-pressure end of high-voltage capacitance and the high-pressure side of low-voltage capacitance.
The low-pressure end of low-voltage capacitance draws low-voltage capacitance end on line, and the end of low-voltage capacitance end on line is earth terminal.
The end of on line connects jointly among extraction wire in the on line of low-voltage capacitance end, the end of wire and derided capacitors
Charged signal lead-out terminal.
Technical parameter：Model：LZZ-10DX, voltage class：10kV, electric current ratio：50-800/5, level：0.2S/0.5, hold
Amount：10/15VA, frequency：50Hz, device classification：It is outdoor.
It the advantage is that：
This model current transformer is full-closed structure, and inside has a set of derided capacitors to adopt the voltage of current transformer once
With the principle of capacitance partial pressure, instruction report of the small voltage signal by circuit reflection to the instrument face plate of switch cubicle is converted into
Alert end, makes staff's intuitive judgment current transformer electriferous state, is easy to keep the safety in production.Inside can with capacitance partial pressure device
Show ontology electriferous state, personal security can be ensured in maintenance.
Using high permeability（μ=20000）, anti-saturation magnetic core, realize metering class precision, it is ensured that device charging is accurate.
Transformer integrally using epoxide resin vacuum pour into a mould, there is high mechanical properties and electrical strength, realize low partial discharge from
And make operation longer, it is more stable.
Reduce a traditional display device, so the original same parameter current transformer of volume ratio is small, save space.Institute
It is H level heat proof materials to have material, meets the fire protection requirement of fire department.
Brief description of the drawings
Fig. 1 is the sectional view of the present invention.
Fig. 2 is the front view of the present invention.
Fig. 3 is the side view of the present invention.
Fig. 4 is the top view of the present invention.
First conductor 1, high-voltage capacitance 2, derided capacitors centre on line 3, low-voltage capacitance 4, low-voltage capacitance end on line 5, band
Electric signal output terminal 6, the first terminal blocks 7, first winding 8, the first secondary winding 9, insulation shell 10, installing plate 11,
The second terminal blocks 12, the second secondary winding 13, the second conductor 14, a wires 15.
Embodiment
A kind of current transformer that powered display signal can be provided, including insulation shell 10.
Side time and secondary side are provided with insulation shell 10.
Side time includes first winding 8, and the both sides of first winding 8 connect the first terminal blocks 7 respectively（P1）With the 2nd 1
Secondary terminal block 12（P2）.
It is arranged with No. the first two magnetic cores in first winding 8, the first secondary winding 9 is arranged with No. the first two magnetic cores.
It is arranged with No. the second two magnetic cores in first winding 8, the second secondary winding 13 is arranged with No. the second two magnetic cores.
The output end of first secondary winding 9 and the output end of the second secondary winding 13 are and secondary terminals（1S1、1S2、2S1、
2S1）Corresponding connection.
The first one times terminal block 7 also passes through the first conductor 1（High pressure derided capacitors guide rod）Connect the high pressure of high-voltage capacitance 2
End, the low-pressure end of high-voltage capacitance 2 and the high-pressure side of low-voltage capacitance 4（Pass through the second conductor 14）Series connection, the low-pressure end of high-voltage capacitance 2
Between the high-pressure side of low-voltage capacitance 4（The second conductor 14 on）Draw on line 3 among derided capacitors.
The low-pressure end of low-voltage capacitance 4 draws low-voltage capacitance end on line 5, the end of low-voltage capacitance end on line 5（Pass through peace
Loading board 11）Ground connection.
The end of on line 3 is total among extraction wire 15 in low-voltage capacitance end on line 5, the end of wire 15 and derided capacitors
With connect band electric signal output terminal 6.
Installing plate 11 is fixed on the bottom of insulation shell 10.
Insulation shell 10 is epoxy resins insulation housing.
High-voltage capacitance 2 is ceramic condenser, and low-voltage capacitance 4 is ceramic condenser.
No. the first two magnetic cores and No. the second two magnetic cores are crystallite magnetic core.
High-voltage capacitance 2 is 10kV electric capacity, and low-voltage capacitance 4 is 24V electric capacity.
High-voltage capacitance 2, low-voltage capacitance 4, the first conductor 1, the second conductor 14, derided capacitors centre on line 3, low-voltage capacitance end
End on line 5 and wire 15 are respectively positioned in insulation shell 10.
High-voltage capacitance 2 is derided capacitors.Capacitance partial pressure device includes high-voltage capacitance 2 and low-voltage capacitance 4.
First winding 8 is concatenated into a circuit by this current transformer by terminal block P1, P2, in a circuit
Electric current sensor current signal produced in two secondary windings by current transformer first winding 8 be used for carrying out electric energy metrical
And measurement.
Casting insulated using epoxide resin vacuum, high-voltage capacitance 2 is fixed on a terminal by high pressure derided capacitors guide rod
7P1 ends are arranged, low-voltage capacitance 4 is drawn out to charged signal lead-out terminal 6, low-voltage capacitance end connection by line 3 among derided capacitors
Line 5 is guided to charged signal lead-out terminal 6 and while is connected with installing plate 11.
In normal mounting, installing plate 11 is connected with cabinet equivalent to earth point, charged signal lead-out terminal 6 when transformer is run,
It is output to because principle of capacitive divider has a voltage signal on cabinet display panel（Indicator lamp or instrument face plate can be used
Instruction warning end, by show voltage signal be with or without）Thus it can determine whether transformer is powered, to ensure maintainer
Safety work.
Claims (5)
1. a kind of current transformer that powered display signal can be provided, including insulation shell (10)；
Side time and secondary side are provided with insulation shell (10)；
Side time includes first winding (8), and first winding (8) both sides connect the first terminal blocks (7) and second once respectively
Terminal block (12)；
It is arranged with No. the first two magnetic cores in first winding (8), the first secondary winding (9) is arranged with No. the first two magnetic cores；
It is arranged with No. the second two magnetic cores in first winding (8), the second secondary winding (13) is arranged with No. the second two magnetic cores；First
Secondary winding (9) output end and the connection corresponding with secondary terminals of the second secondary winding (13) output end；It is characterized in that：
The first terminal blocks (7) also connect the high-pressure side of high-voltage capacitance (2) by the first conductor (1), high-voltage capacitance (2) it is low
Pressure side is connected with the high-pressure side of low-voltage capacitance (4), is drawn between the low-pressure end of high-voltage capacitance (2) and the high-pressure side of low-voltage capacitance (4)
Go out on line (3) among derided capacitors；
The low-pressure end of low-voltage capacitance (4) draws low-voltage capacitance end on line (5), and the end of low-voltage capacitance end on line (5) is to connect
Ground terminal；
The end of on line (3) among extraction wire (15) in low-voltage capacitance end on line (5), the end of wire (15) and derided capacitors
Hold common connect band electric signal output terminal (6).
A kind of 2. current transformer that powered display signal can be provided according to claim 1, it is characterised in that：Insulation
Housing (10) is epoxy resins insulation housing.
A kind of 3. current transformer that powered display signal can be provided according to claim 1, it is characterised in that：High pressure
Electric capacity (2) is ceramic condenser, and low-voltage capacitance (4) is ceramic condenser.
A kind of 4. current transformer that powered display signal can be provided according to claim 1, it is characterised in that：First
Secondary magnetic core and No. the second two magnetic cores are crystallite magnetic core.
A kind of 5. current transformer that powered display signal can be provided according to claim 1, it is characterised in that：Installation
Plate (11) is fixed on insulation shell (10) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710968409.6A CN107749341A (en) | 2017-10-18 | 2017-10-18 | A kind of current transformer that powered display signal can be provided |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710968409.6A CN107749341A (en) | 2017-10-18 | 2017-10-18 | A kind of current transformer that powered display signal can be provided |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107749341A true CN107749341A (en) | 2018-03-02 |
Family
ID=61253093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710968409.6A Withdrawn CN107749341A (en) | 2017-10-18 | 2017-10-18 | A kind of current transformer that powered display signal can be provided |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107749341A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108878115A (en) * | 2018-07-25 | 2018-11-23 | 湖北大二互科技股份有限公司 | A kind of 10kV post-mounted high pressure Integral metering device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201364812Y (en) * | 2009-03-13 | 2009-12-16 | 上海大一互电力电器有限公司 | Current transformer with capacitance differential pressure |
| CN201877281U (en) * | 2010-12-09 | 2011-06-22 | 天津市百利纽泰克电气科技有限公司 | Novel current transformer for providing signal for electrical display device |
| CN102749556A (en) * | 2011-03-11 | 2012-10-24 | 北京瑞恒天威电力电子有限公司 | Capacitance-type insulating capacitive voltage-dividing insulation monitor |
| CN106024353A (en) * | 2016-07-18 | 2016-10-12 | 河南森源电气股份有限公司 | Current transformer and switch cabinet using current transformer |
| CN106560903A (en) * | 2015-10-02 | 2017-04-12 | Abb瑞士股份有限公司 | Current Transformer With Additional Voltage Indication For The Use In Medium Or High Voltage Equipment |
| CN207517491U (en) * | 2017-10-18 | 2018-06-19 | 湖北大二互科技股份有限公司 | A kind of current transformer that electrification can be provided and show signal |
-
2017
- 2017-10-18 CN CN201710968409.6A patent/CN107749341A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201364812Y (en) * | 2009-03-13 | 2009-12-16 | 上海大一互电力电器有限公司 | Current transformer with capacitance differential pressure |
| CN201877281U (en) * | 2010-12-09 | 2011-06-22 | 天津市百利纽泰克电气科技有限公司 | Novel current transformer for providing signal for electrical display device |
| CN102749556A (en) * | 2011-03-11 | 2012-10-24 | 北京瑞恒天威电力电子有限公司 | Capacitance-type insulating capacitive voltage-dividing insulation monitor |
| CN106560903A (en) * | 2015-10-02 | 2017-04-12 | Abb瑞士股份有限公司 | Current Transformer With Additional Voltage Indication For The Use In Medium Or High Voltage Equipment |
| CN106024353A (en) * | 2016-07-18 | 2016-10-12 | 河南森源电气股份有限公司 | Current transformer and switch cabinet using current transformer |
| CN207517491U (en) * | 2017-10-18 | 2018-06-19 | 湖北大二互科技股份有限公司 | A kind of current transformer that electrification can be provided and show signal |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108878115A (en) * | 2018-07-25 | 2018-11-23 | 湖北大二互科技股份有限公司 | A kind of 10kV post-mounted high pressure Integral metering device |
| CN108878115B (en) * | 2018-07-25 | 2023-12-05 | 湖北大二互科技股份有限公司 | 10kV column-mounted high-voltage integrated metering device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180302 |
|
| WW01 | Invention patent application withdrawn after publication |