CN207517491U - A kind of current transformer that electrification can be provided and show signal - Google Patents
A kind of current transformer that electrification can be provided and show signal Download PDFInfo
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- CN207517491U CN207517491U CN201721337885.XU CN201721337885U CN207517491U CN 207517491 U CN207517491 U CN 207517491U CN 201721337885 U CN201721337885 U CN 201721337885U CN 207517491 U CN207517491 U CN 207517491U
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Abstract
A kind of current transformer that can be provided electrification and show signal, insulation shell is interior to be equipped 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 conducting 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 switchgear, make staff's intuitive judgment current transformer electriferous state, convenient for safety in production.
Description
Technical field
The utility model belongs to current transformer field, and more particularly to a kind of electric current that can provide electrification display signal is mutual
Sensor.
Background technology
Ordinary electric current mutual-inductor in use be mounted on cabinet inside, can only by observation window to current transformer into
Row visual inspection and current parameters record is carried out by ammeter, in addition to this electriferous state of ontology or by the electricity in circuit
Mutual inductor is pressed to show, can not intuitively reflect current transformer electriferous state in maintenance.
Utility model content
The purpose of this utility model is to provide a kind of current transformer that can be provided electrification and show signal, can provide and turn
Voltage signal is changed, show ontology electriferous state can ensure personnel safety in maintenance.
The technical solution adopted is that：
A kind of current transformer that electrification can be provided and show signal, including insulation shell.
Side time and secondary side are equipped in insulation shell.
Side time includes first winding, and first winding both sides connect the first terminal blocks and the second terminals respectively
Row.
The first secondary magnetic core is arranged in first winding, the first secondary winding is arranged on the first secondary magnetic core.
Second secondary magnetic core is arranged in first winding, second secondary winding is arranged on second secondary magnetic core.One or two
Secondary winding output terminal and second secondary winding output terminal are correspondingly connected with secondary terminals.
Technical points are：
The first terminal blocks also connect the high-pressure side of high-voltage capacitance by the first conductor, the low-pressure end of high-voltage capacitance with it is low
The high-pressure side series connection of voltage capacitance, draws among derided capacitors between the low-pressure end of high-voltage capacitance and the high-pressure side of low-voltage capacitance and joins
Line.
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 ground terminal.
The end of on line connects jointly among extraction wire in the on line of low-voltage capacitance end, the end of conducting wire and derided capacitors
Charged signal leading-out terminal.
Technical parameter：Model：LZZ-10DX, voltage class：10kV, electric current ratio：, level：0.2S/0.5 holds
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 can be by the primary electricity of current transformer
Pressure is converted into finger of the small voltage signal by circuit reflection to the instrument face plate of switchgear using the principle of capacitance partial pressure
Show warning end, make staff's intuitive judgment current transformer electriferous state, convenient for safety in production.Inside is filled with capacitance partial pressure
Put can show ontology electriferous state, maintenance when can ensure personnel safety.
Using high permeability（μ=20000）, anti-saturation magnetic core, realize metering class precision, it is ensured that device charging is accurate.
Mutual inductor integrally using epoxide resin vacuum pour into a mould, have high mechanical properties and electrical strength, realize low partial discharge from
And make operation longer, it is more stable.
Reduce a traditional display equipment, so the original same parameter current transformer of volume ratio is small, save space.Institute
It is H grades of heat proof materials to have material, meets the fire protection requirement of fire department.
Description of the drawings
Fig. 1 is the sectional view of the utility model.
Fig. 2 is the front view of the utility model.
Fig. 3 is the side view of the utility model.
Fig. 4 is the vertical view of the utility model.
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, second secondary winding 13, the second conductor 14, a conducting wires 15.
Specific embodiment
A kind of current transformer that electrification can be provided and show signal, including insulation shell 10.
Side time and secondary side are equipped in insulation shell 10.
Side time includes first winding 8, and 8 both sides of first winding connect the first terminal blocks 7 respectively（P1）With the 2nd 1
Secondary terminal block 12（P2）.
The first secondary magnetic core is arranged in first winding 8, the first secondary winding 9 is arranged on the first secondary magnetic core.
Second secondary magnetic core is arranged in first winding 8, second secondary winding 13 is arranged on second secondary magnetic core.
First secondary winding, 9 output terminal and 13 output terminal of second secondary winding are and secondary terminals（1S1、1S2、2S1、
2S1）It is correspondingly connected with.
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 conducting wire 15 and derided capacitors
With connect band electric signal output terminal 6.
Installing plate 11 is fixed on 10 bottom of insulation shell.
Insulation shell 10 is epoxy resins insulation housing.
High-voltage capacitance 2 is ceramic condenser, and low-voltage capacitance 4 is ceramic condenser.
First secondary magnetic core and second secondary magnetic core are crystallite magnetic core.
High-voltage capacitance 2 is 10kV capacitances, and low-voltage capacitance 4 is 24V capacitances.
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 conducting 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 generated in two secondary windings by current transformer first winding 8 be used for carrying out electrical energy measurement
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 leading-out terminal 6, low-voltage capacitance end connection by line 3 among derided capacitors
Line 5 guides to charged signal leading-out terminal 6 and while is connected with installing plate 11.
In normal mounting, installing plate 11 is connected with cabinet is equivalent to earth point, charged signal output terminal when mutual inductor is run
Son 6, since principle of capacitive divider meeting is output on cabinet display panel there are one voltage signal（Indicator light or instrument can be used
The instruction warning end of panel, by show voltage signal be with or without）Thus it can determine whether mutual inductor charges, to ensure to overhaul
Personnel safety operation.
Claims (5)
1. a kind of current transformer that electrification can be provided and show signal, including insulation shell (10)；
Side time and secondary side are equipped in 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)；
The first secondary magnetic core is arranged in first winding (8), the first secondary winding (9) is arranged on the first secondary magnetic core；
Second secondary magnetic core is arranged in first winding (8), second secondary winding (13) is arranged on second secondary magnetic core；First
Secondary winding (9) output terminal and second secondary winding (13) output terminal are correspondingly connected with secondary terminals；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 connects
Ground terminal；
The end of on line (3) among extraction wire (15) in low-voltage capacitance end on line (5), the end of conducting wire (15) and derided capacitors
Hold common connect band electric signal output terminal (6).
2. a kind of current transformer that electrification can be provided and show signal according to claim 1, it is characterised in that：Insulation
Housing (10) is epoxy resins insulation housing.
3. a kind of current transformer that electrification can be provided and show signal according to claim 1, it is characterised in that：High pressure
Capacitance (2) is ceramic condenser, and low-voltage capacitance (4) is ceramic condenser.
4. a kind of current transformer that electrification can be provided and show signal according to claim 1, it is characterised in that：First
Secondary magnetic core and second secondary magnetic core are crystallite magnetic core.
5. a kind of current transformer that electrification can be provided and show signal 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 |
|---|---|---|---|
| CN201721337885.XU CN207517491U (en) | 2017-10-18 | 2017-10-18 | A kind of current transformer that electrification can be provided and show signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721337885.XU CN207517491U (en) | 2017-10-18 | 2017-10-18 | A kind of current transformer that electrification can be provided and show signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207517491U true CN207517491U (en) | 2018-06-19 |
Family
ID=62534692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721337885.XU Expired - Fee Related CN207517491U (en) | 2017-10-18 | 2017-10-18 | A kind of current transformer that electrification can be provided and show signal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207517491U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107749341A (en) * | 2017-10-18 | 2018-03-02 | 湖北大二互科技股份有限公司 | A kind of current transformer that powered display signal can be provided |
-
2017
- 2017-10-18 CN CN201721337885.XU patent/CN207517491U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107749341A (en) * | 2017-10-18 | 2018-03-02 | 湖北大二互科技股份有限公司 | A kind of current transformer that powered display signal can be provided |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180619 Termination date: 20191018 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |