CN108335892A - Voltage transformer overload protection arrangement - Google Patents
Voltage transformer overload protection arrangement Download PDFInfo
- Publication number
- CN108335892A CN108335892A CN201810303328.9A CN201810303328A CN108335892A CN 108335892 A CN108335892 A CN 108335892A CN 201810303328 A CN201810303328 A CN 201810303328A CN 108335892 A CN108335892 A CN 108335892A
- Authority
- CN
- China
- Prior art keywords
- insulation
- conductive
- iron core
- curved bar
- overload protection
- 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.)
- Withdrawn
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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
- H01F38/24—Voltage transformers
- H01F38/26—Constructions
-
- 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
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/36—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electromagnetic release and no other automatic release
-
- 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
- H01F2027/406—Temperature sensor or protection
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Protection Of Transformers (AREA)
Abstract
The present invention relates 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 present invention 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 present invention relates 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
It is an object of the invention to overcome the deficiencies of existing technologies, a kind of simple in structure, stable and reliable for performance, failure is provided
Dropout accuracy is high, can effectively extend the voltage transformer overload protection arrangement of mutual inductor service life.
To achieve the above object, the present invention uses a kind of voltage transformer overload protection arrangement, including setting once connecing
Overlond trip mechanism between line terminals 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.
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 structural schematic diagram of the embodiment of the present invention.
Fig. 2 is the portions A enlarged drawing in Fig. 1.
Specific implementation mode
As shown in Figure 1, 2, the embodiment of the present invention is a kind of voltage transformer overload protection arrangement, including setting is once connecing
Overlond trip mechanism 20 between line terminals 10 and primary coil 11, the overlond trip mechanism 20 include being arranged on iron core 12
The insulation curved bar 23 of the linkage setting of dynamic iron core 222 of accessory power supply coil 21, magnetictrip 22 and magnetictrip 22 connects
It is connected on the temperature detect switch (TDS) 24 between magnetictrip 22 and accessory power supply coil 21, is arranged between primary coil 11 and iron core 12
And be connected with temperature detect switch (TDS) 24 temperature sensor 25, insulation tube 26, the power spring 27 being arranged in insulation tube 26, it is described
One end of power spring 27 be connected with primary connection terminal 10, conductive public ball is provided on the other end of power spring 27
271, the conductive female groove 231 being interlocked with conductive public ball 271, the conductive female groove are provided on the insulation curved bar 23
231 are electrically connected with primary coil 11.Corresponding conduction female groove 231 and conductive public ball 271 buckles on the inner wall of the insulation tube 26
Arc extinguishing ring gear 28 is provided at conjunction.Arc extinguishing ring gear is conducive to elongate the electric arc generated between conductive female groove and conductive public ball, favorably
In the breaking capacity for improving the overload protection arrangement, the reliability of voltage transformer overload protection arrangement work is improved.It is described
Magnetictrip 22 include yoke 221, dynamic iron core 222, static iron core 223, resetting spring 224, high magnetic flux coil 225, it is described
High magnetic flux coil 225 be electrically connected with temperature detect switch (TDS) 24, be provided with insulated tension pole 226, insulated tension pole in the dynamic iron core 222
226 one end is movably connected on insulation curved bar 23.Temperature detect switch (TDS) can monitor the coil temperature of mutual inductor in real time, work as temperature
When spending 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 insulation
Curved bar acts, and to insulate, the conductive female groove on curved bar is threaded off with conductive public ball, to realize that the overload of the voltage transformer is protected
Shield.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 first in insulation tube 26
On insulating support 261, the conductive female groove 231 is arranged on the other end of insulation curved bar 23, corresponding conductive in insulation tube 26
It is provided with the second insulating support 262 at female groove 231, and is connected with reset between 231 and second insulating support 262 of conductive female groove and draws
The bending part of spring 29, the insulation curved bar 23 is movably connected on one end of insulated tension pole 226.When circuit breaks down,
The insulated tension pole of magnetictrip pulls insulation curved bar to be rotated around the first insulating support, to realize conductive female groove and conductive public ball
Dropout, 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 |
|---|---|---|---|
| CN201810303328.9A CN108335892A (en) | 2018-04-07 | 2018-04-07 | Voltage transformer overload protection arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810303328.9A CN108335892A (en) | 2018-04-07 | 2018-04-07 | Voltage transformer overload protection arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108335892A true CN108335892A (en) | 2018-07-27 |
Family
ID=62932815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810303328.9A Withdrawn CN108335892A (en) | 2018-04-07 | 2018-04-07 | Voltage transformer overload protection arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108335892A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108717897A (en) * | 2018-08-04 | 2018-10-30 | 安徽华能集团电器有限公司 | A kind of Self-protecting mutual inductor |
| CN110620002A (en) * | 2019-09-12 | 2019-12-27 | 湖北大二互科技股份有限公司 | Temperature sensing type voltage transformer |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050258140A1 (en) * | 2004-05-18 | 2005-11-24 | Areva T&D Ag | Electrical energy disconnection device |
| CN201298515Y (en) * | 2008-09-17 | 2009-08-26 | 青田奥来电器有限公司 | Overload protection electronic miniature current leakage breaker |
| CN101651272A (en) * | 2008-08-13 | 2010-02-17 | 浙江正泰建筑电器有限公司 | Fire-proof and electric leakage-proof safety plug |
| CN204204614U (en) * | 2014-10-24 | 2015-03-11 | 大连第二互感器集团有限公司 | A kind of small outdoor voltage transformer |
| CN104616874A (en) * | 2015-02-14 | 2015-05-13 | 云南电网有限责任公司带电作业分公司 | Voltage transformer protection device |
| CN204360911U (en) * | 2015-02-04 | 2015-05-27 | 华建电气有限公司 | With the voltage transformer of fuse |
| CN207938457U (en) * | 2018-04-07 | 2018-10-02 | 华建电气有限公司 | Voltage transformer overload protection arrangement |
-
2018
- 2018-04-07 CN CN201810303328.9A patent/CN108335892A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050258140A1 (en) * | 2004-05-18 | 2005-11-24 | Areva T&D Ag | Electrical energy disconnection device |
| CN101651272A (en) * | 2008-08-13 | 2010-02-17 | 浙江正泰建筑电器有限公司 | Fire-proof and electric leakage-proof safety plug |
| CN201298515Y (en) * | 2008-09-17 | 2009-08-26 | 青田奥来电器有限公司 | Overload protection electronic miniature current leakage breaker |
| CN204204614U (en) * | 2014-10-24 | 2015-03-11 | 大连第二互感器集团有限公司 | A kind of small outdoor voltage transformer |
| CN204360911U (en) * | 2015-02-04 | 2015-05-27 | 华建电气有限公司 | With the voltage transformer of fuse |
| CN104616874A (en) * | 2015-02-14 | 2015-05-13 | 云南电网有限责任公司带电作业分公司 | Voltage transformer protection device |
| CN207938457U (en) * | 2018-04-07 | 2018-10-02 | 华建电气有限公司 | Voltage transformer overload protection arrangement |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108717897A (en) * | 2018-08-04 | 2018-10-30 | 安徽华能集团电器有限公司 | A kind of Self-protecting mutual inductor |
| CN108717897B (en) * | 2018-08-04 | 2023-11-17 | 安徽华能集团电器有限公司 | Self-protection type mutual inductor |
| CN110620002A (en) * | 2019-09-12 | 2019-12-27 | 湖北大二互科技股份有限公司 | Temperature sensing type voltage transformer |
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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: 20180727 |
|
| WW01 | Invention patent application withdrawn after publication |