CN207938457U - Voltage transformer overload protection arrangement - Google Patents
Voltage transformer overload protection arrangement Download PDFInfo
- Publication number
- CN207938457U CN207938457U CN201820480676.9U CN201820480676U CN207938457U CN 207938457 U CN207938457 U CN 207938457U CN 201820480676 U CN201820480676 U CN 201820480676U CN 207938457 U CN207938457 U CN 207938457U
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- China
- Prior art keywords
- insulation
- conductive
- iron core
- curved bar
- overload protection
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Abstract
The utility model is related to a kind of voltage transformer overload protection arrangements, including the overlond trip mechanism being arranged between primary connection terminal and primary coil, the overlond trip mechanism includes the accessory power supply coil being arranged on iron core, magnetictrip, with the insulation curved bar of the dynamic iron core linkage setting of magnetictrip, the temperature detect switch (TDS) being connected between magnetictrip and accessory power supply coil, the temperature sensor for being arranged between primary coil and iron core and being connected with temperature detect switch (TDS), insulation tube, the power spring being arranged in insulation tube, one end of the power spring is connected with primary connection terminal, conductive public ball is provided on the other end of power spring, the conductive female groove being interlocked with conductive public ball is provided on the insulation curved bar, the conductive female groove is electrically connected with primary coil.The utility model has the advantages that simple in structure, stable and reliable for performance, fault trip accuracy is high, can effectively extend mutual inductor service life, overload protection.
Description
Technical field
The utility model is related to a kind of voltage transformers, and in particular to a kind of voltage transformer overload protection arrangement.
Background technology
Voltage transformer is the instrument of the voltage on conversion line.But the purpose of transformer voltage of transformation be in order to
Convey electric energy, therefore capacity is very big, typically using kilovolt-ampere or megavolt-ampere as unit of account；And voltage transformer voltage of transformation
Purpose, be primarily used to power to measuring instrumentss and protective relaying device, for measuring the voltage, power and electric energy of circuit,
Or for expensive equipment, motor and the transformer in the protection circuit in line failure.To ensure electricity net safety stable
Operation, improves power supply reliability, and existing built-in fuse type voltage transformer is melted in circuit malfunctions or exception
Disconnected device can cut off electric current, play the role of protection circuit, but the built-in fuse type voltage transformer, the performance of fuse
Unreliable, fuse can not monitor the temperature of mutual inductor device body assembly in real time, when circuit overloads, mutual inductor device
Body assembly because temperature is excessively high cause coil to burn out after, at this point, fuse could cut off circuit, fuse can not play protection
The effect of mutual inductor device body assembly, therefore, that there are service lifes is shorter for the built-in fuse type voltage transformer, performance is unreliable
Defect.
Invention content
The purpose of the utility model is to overcome the defect of the prior art, provide it is a kind of it is simple in structure, stable and reliable for performance,
Fault trip accuracy is high, can effectively extend the voltage transformer overload protection arrangement of mutual inductor service life.
To achieve the above object, the utility model uses a kind of voltage transformer overload protection arrangement, including is arranged one
Overlond trip mechanism between secondary connecting terminal and primary coil, the overlond trip mechanism include the auxiliary electricity being arranged on iron core
Source coil, magnetictrip, with the insulation curved bar of the dynamic iron core of magnetictrip linkage setting, be connected to magnetictrip with it is auxiliary
The temperature detect switch (TDS) helped between power coil, the temperature sensing for being arranged between primary coil and iron core and being connected with temperature detect switch (TDS)
One end of device, insulation tube, the power spring being arranged in insulation tube, the power spring is connected with primary connection terminal,
It is provided with conductive public ball on the other end of power spring, the conduction being interlocked with conductive public ball is provided on the insulation curved bar
Female groove, the conductive female groove are electrically connected with primary coil.
The advantageous effect of above structure is：The overload protection arrangement is arranged between primary connection terminal and primary coil,
When overload fault occurs in circuit, the temperature of voltage transformer increases, when temperature sensor monitors are excessively high to coil temperature, temperature control
Switch is closed, and magnetictrip is powered, and the dynamic iron core of magnetictrip drives insulated tension pole action, insulated tension pole to pull insulation bent
Bar acts, to the dropout of conduction public ball and the conducting wire female groove on insulation curved bar on power spring.The overload protection arrangement can
The temperature of the coil of voltage transformer is monitored in real time, once exception occurs in circuit, magnetictrip can execute rapidly excessively
Trip action, avoidable voltage transformer are burned, and have effectively been ensured line security, have been substantially increased security performance.To
Realize that the voltage transformer has simple in structure, stable and reliable for performance, fault trip accuracy is high, can effectively extend mutual inductor to make
The advantages of with the service life.
Particularly, on the inner wall of the insulation tube arc extinguishing tooth is provided at corresponding conduction female groove and the fastening of conductive public ball
Ring.Arc extinguishing ring gear is conducive to elongate the electric arc generated between conductive female groove and conductive public ball, is conducive to improve overload protection dress
The breaking capacity set improves the reliability of voltage transformer overload protection arrangement work.
Particularly, the magnetictrip includes yoke, dynamic iron core, static iron core, resetting spring, high magnetic flux coil, institute
The high magnetic flux coil stated is electrically connected with temperature detect switch (TDS), and insulated tension pole is provided in the dynamic iron core, and one end of insulated tension pole is lived
It is dynamic to be connected on insulation curved bar.Temperature detect switch (TDS) can monitor the coil temperature of mutual inductor in real time, when the temperature is excessively high, temperature control
Switch is closed, and magnetictrip is powered, and dynamic iron core drives insulated tension pole action, insulated tension pole to pull insulation curved bar action, to
The conductive female groove to insulate on curved bar is threaded off with conductive public ball, to realize the overload protection of the voltage transformer.
Particularly, the cross sectional shape of the insulation curved bar is L-shaped, and the one end for the curved bar that insulate is movably connected in insulation tube
The first insulating support on, the conductive female groove is arranged on the other end of insulation curved bar, corresponding conduction female groove in insulation tube
Place is provided with the second insulating support, and reset tension spring is connected between conductive female groove and the second insulating support, and the insulation is bent
The bending part of bar is movably connected on one end of insulated tension pole.When circuit breaks down, the insulated tension pole of magnetictrip is drawn
Dynamic insulation curved bar is rotated around the first insulating support, to realize the dropout of conductive female groove and conductive public ball, to realize the voltage
The overload protection of mutual inductor.
Description of the drawings
Fig. 1 is the utility model embodiment structural schematic diagram.
Fig. 2 is the portions A enlarged drawing in Fig. 1.
Specific implementation mode
As shown in Figure 1, 2, the utility model embodiment is a kind of voltage transformer overload protection arrangement, including is arranged one
Overlond trip mechanism 20 between secondary connecting terminal 10 and primary coil 11, the overlond trip mechanism 20 include being arranged in iron core 12
On accessory power supply coil 21, magnetictrip 22, the insulation curved bar with the linkage setting of the dynamic iron core 222 of magnetictrip 22
23, it is connected to the temperature detect switch (TDS) 24 between magnetictrip 22 and accessory power supply coil 21, is arranged in primary coil 11 and iron core
The temperature sensor 25 that is connected between 12 and with temperature detect switch (TDS) 24, insulation tube 26, the power spring being arranged in insulation tube 26
27, one end of the power spring 27 is connected with primary connection terminal 10, is provided with and leads on the other end of power spring 27
Electric public affairs ball 271 is provided with the conductive female groove 231 being interlocked with conductive public affairs ball 271, the conduction on the insulation curved bar 23
Female groove 231 is electrically connected with primary coil 11.Corresponding conduction female groove 231 and conductive public ball 271 on the inner wall of the insulation tube 26
Fastening at be provided with arc extinguishing ring gear 28.Arc extinguishing ring gear is conducive to elongate the electric arc generated between conductive female groove and conductive public ball,
The breaking capacity for being conducive to improve the overload protection arrangement improves the reliability of voltage transformer overload protection arrangement work.
The magnetictrip 22 includes yoke 221, dynamic iron core 222, static iron core 223, resetting spring 224, high magnetic flux coil 225,
The high magnetic flux coil 225 is electrically connected with temperature detect switch (TDS) 24, and insulated tension pole 226 is provided in the dynamic iron core 222, insulation
One end of pull rod 226 is movably connected on insulation curved bar 23.Temperature detect switch (TDS) can monitor the coil temperature of mutual inductor in real time,
When the temperature is excessively high, temperature detect switch (TDS) is closed, and magnetictrip is powered, and dynamic iron core drives insulated tension pole action, insulated tension pole to pull
The curved bar that insulate acts, and to insulate, the conductive female groove on curved bar is threaded off with conductive public ball, to realize the mistake of the voltage transformer
Carry protection.The cross sectional shape of the insulation curved bar 23 is L-shaped, and one end of insulation curved bar 23 is movably connected in insulation tube 26
On first insulating support 261, the conductive female groove 231 is arranged on the other end of insulation curved bar 23, corresponding in insulation tube 26
It is provided with the second insulating support 262 at conductive female groove 231, and is connected between 231 and second insulating support 262 of conductive female groove multiple
Position tension spring 29, the bending part of the insulation curved bar 23 are movably connected on one end of insulated tension pole 226.When circuit breaks down
When, the insulated tension pole of magnetictrip pulls insulation curved bar to be rotated around the first insulating support, to realize conductive female groove and conduction
The dropout of public ball, to realize the overload protection of the voltage transformer.
The overload protection arrangement is arranged between primary connection terminal and primary coil, when there is overload fault in circuit,
The temperature of voltage transformer increases, and when temperature sensor monitors are excessively high to coil temperature, temperature detect switch (TDS) is closed, and magnetictrip is logical
The dynamic iron core of electricity, magnetictrip drives insulated tension pole action, and insulated tension pole pulls insulation curved bar action, on power spring
The public ball of conduction and the conducting wire female groove on insulation curved bar dropout.The overload protection arrangement can be to the temperature of the coil of voltage transformer
Degree is monitored in real time, once exception occurs in circuit, magnetictrip can execute rapidly trip action excessively, can avoid mutual induction of voltage
Device is burned, and has effectively ensured line security, substantially increases security performance.To realize that the voltage transformer has structure
Simply, stable and reliable for performance, fault trip accuracy is high, can effectively extend the advantages of mutual inductor service life.And the overload
Protective device also has the advantages that maintenance cost is low, and after which threads off, maintenance personal is pushed conductive by mandril
Public ball fastens the public ball of conduction on power spring with the conductive female groove on insulation curved bar, to greatly reduce use
The use cost at family.
Claims (4)
1. a kind of voltage transformer overload protection arrangement, it is characterised in that：The overload protection arrangement includes being arranged in primary connection
Overlond trip mechanism between terminal and primary coil, the overlond trip mechanism include the auxiliary power supply line being arranged on iron core
The insulation curved bar of the dynamic iron core linkage setting of circle, magnetictrip and magnetictrip is connected to magnetictrip and assists electric
Temperature detect switch (TDS) between source coil, the temperature sensor for being arranged between primary coil and iron core and being connected with temperature detect switch (TDS),
One end of insulation tube, the power spring being arranged in insulation tube, the power spring is connected with primary connection terminal, conductive
It is provided with conductive public ball on the other end of spring, it is female that the conduction being interlocked with conductive male ball is provided on the insulation curved bar
Slot, the conductive female groove are electrically connected with primary coil.
2. voltage transformer overload protection arrangement according to claim 1, it is characterised in that：The inner wall of the insulation tube
It is provided with arc extinguishing ring gear at upper corresponding conductive female groove and the fastening of conductive public ball.
3. voltage transformer overload protection arrangement according to claim 1, it is characterised in that：The magnetictrip packet
Yoke, dynamic iron core, static iron core, resetting spring, high magnetic flux coil are included, the high magnetic flux coil is electrically connected with temperature detect switch (TDS), institute
Insulated tension pole is provided in the dynamic iron core stated, one end of insulated tension pole is movably connected on insulation curved bar.
4. voltage transformer overload protection arrangement according to claim 1 or 2 or 3, it is characterised in that：The insulation is bent
The cross sectional shape of bar is L-shaped, and the one end for the curved bar that insulate is movably connected on the first insulating support in insulation tube, the conduction
Female groove is arranged on the other end of insulation curved bar, is provided with the second insulating support at corresponding conduction female groove in insulation tube, and conductive
Reset tension spring is connected between female groove and the second insulating support, the bending part of the insulation curved bar is movably connected in insulated tension pole
One end on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820480676.9U CN207938457U (en) | 2018-04-07 | 2018-04-07 | Voltage transformer overload protection arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820480676.9U CN207938457U (en) | 2018-04-07 | 2018-04-07 | Voltage transformer overload protection arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207938457U true CN207938457U (en) | 2018-10-02 |
Family
ID=63656354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820480676.9U Expired - Fee Related CN207938457U (en) | 2018-04-07 | 2018-04-07 | Voltage transformer overload protection arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207938457U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108335892A (en) * | 2018-04-07 | 2018-07-27 | 华建电气有限公司 | Voltage transformer overload protection arrangement |
| CN117175499A (en) * | 2023-11-03 | 2023-12-05 | 山西晋阳碳素有限公司 | Comprehensive protector for high-power on-load voltage-regulating transformer |
-
2018
- 2018-04-07 CN CN201820480676.9U patent/CN207938457U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108335892A (en) * | 2018-04-07 | 2018-07-27 | 华建电气有限公司 | Voltage transformer overload protection arrangement |
| CN117175499A (en) * | 2023-11-03 | 2023-12-05 | 山西晋阳碳素有限公司 | Comprehensive protector for high-power on-load voltage-regulating transformer |
| CN117175499B (en) * | 2023-11-03 | 2024-01-23 | 山西晋阳碳素有限公司 | Comprehensive protector for high-power on-load voltage-regulating transformer |
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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: 20181002 Termination date: 20210407 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |