CN107799289A - A kind of voltage transformer - Google Patents
A kind of voltage transformer Download PDFInfo
- Publication number
- CN107799289A CN107799289A CN201710991359.3A CN201710991359A CN107799289A CN 107799289 A CN107799289 A CN 107799289A CN 201710991359 A CN201710991359 A CN 201710991359A CN 107799289 A CN107799289 A CN 107799289A
- Authority
- CN
- China
- Prior art keywords
- primary side
- shell body
- wiring
- binding post
- alarm
- 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.)
- Pending
Links
- 238000004804 winding Methods 0.000 claims abstract description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000009434 installation Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 7
- 239000000919 ceramic Substances 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 6
- 238000005245 sintering Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 8
- 230000005611 electricity Effects 0.000 abstract description 5
- 230000007423 decrease Effects 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000007689 inspection Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001149 thermolysis 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
- H01F38/24—Voltage transformers
- H01F38/26—Constructions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line 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
- H01F27/02—Casings
-
- 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
- H01F27/02—Casings
- H01F27/025—Constructional details relating to cooling
-
- 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
- H01F27/02—Casings
- H01F27/04—Leading of conductors or axles through casings, e.g. for tap-changing 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
- H01F27/08—Cooling; Ventilating
- H01F27/22—Cooling by heat conduction through solid or powdered fillings
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention discloses a kind of voltage transformer, including shell body, the shell body installed in front has warning device, and shell body inside installation is cored, and the top and bottom of the iron core are wound with primary side winding and vice-side winding respectively；The shell body inwall both sides are provided with primary side fuse and secondary fuse；The shell body upper end is provided with snap joint, and the shell body side is provided with guard box, secondary binding post is provided with inside the guard box.Beneficial effect is：The connection of primary side binding post and circuit to be detected is realized by threading hole, under the elastic reaction of wiring spring, drives primary side binding post to decline by wiring conducting strip, realizes the fastening of primary side wiring, patching operations are simple and convenient；When secondary circuit occurs short-circuit, secondary fuse is disconnected, electromagnet dead electricity, and movable conducting strip rises under the elastic force effect of alarm spring to be contacted with fixed-conductive film, so that battery and alarm form loop, automatic alarm is realized by alarm.
Description
Technical field
The present invention relates to electronic component device technical field, and in particular to a kind of voltage transformer.
Background technology
Voltage transformer is used for the voltage on conversion line, is primarily used to measuring instrumentss and protective relaying device confession
Electricity, for the voltage, power and electric energy of measurement circuitry, or set for valuable in the protection circuit in line failure
Standby, motor and transformer.In Physical Experiment progress route survey is aided in frequently with voltage transformer.
Applicants have discovered that following technical problem in the prior art at least be present：Current voltage transformer primary side wiring is answered
It is miscellaneous, inconvenient, influence the efficiency of wireline inspection；Simultaneously in secondary short circuit, automatic alarm can not be realized, easily causes danger.
The content of the invention
The purpose of the present invention is that to solve the above problems and provides a kind of voltage transformer, to solve prior art
Middle voltage transformer primary side wiring is complicated, inconvenience, influences the efficiency of wireline inspection；Simultaneously in secondary short circuit, it can not realize certainly
Dynamic alarm, easily causes the technical problems such as danger.Preferable technical scheme can be real in many technical schemes provided by the invention
The fast-wiring of existing primary side, it is simple and convenient, it is favorably improved wireline inspection efficiency；When secondary occurs short-circuit, can reach
Fast shut-off secondary circuit, while the technique effects such as automatic alarm can be realized, elaboration as detailed below.
To achieve the above object, the invention provides technical scheme once：
A kind of voltage transformer provided by the invention, including shell body, the shell body installed in front have warning device, institute
State inside shell body that installation is cored, the top and bottom of the iron core are wound with primary side winding and vice-side winding respectively；It is described
Shell body inwall both sides are provided with primary side fuse and secondary fuse, and the primary side fuse is electrically connected with the primary side winding
Connect, the secondary fuse electrically connects with the vice-side winding；The shell body upper end is provided with snap joint, the fast quick access
Head electrically connects with the primary side fuse；The shell body side is provided with guard box, and secondary is provided with inside the guard box
Binding post, the secondary binding post electrically connect with the secondary fuse；
The warning device includes warning box, electromagnet, and the warning box is fixedly mounted on front side of the shell body, described
Both sides are provided with battery, electromagnet inside warning box, and the electromagnet electrically connects with the secondary fuse；The warning box
Surface is provided with alarm, and the alarm is connected with the storage battery；The warning box inner top is provided with fixed conduction
Piece and alarm spring, the fixed-conductive film are connected with the storage battery；The alarm spring end is provided with active conductive
Piece, the movable conducting strip electrically connect with the alarm；
The snap joint includes wiring shell, primary side binding post, and the wiring shell is fixedly mounted on the shell body
Upper end, the wiring enclosure are slidably fitted with the primary side binding post, and the primary side binding post top is provided with threading hole,
The primary side wiring column bottom is provided with wiring conducting strip, and the wiring conducting strip electrically connects with the primary side fuse；It is described
Be provided with wiring spring on the outside of primary side binding post, the both ends of the wiring spring respectively with the wiring conducting strip and the wiring
Shell is connected.
Using a kind of above-mentioned voltage transformer, the present apparatus pulls the primary side wiring applied in 10KV electric power system
Post, overcome the elastic force of the wiring spring, spill the threading hole on the primary side binding post top, by the line of circuit to be measured from
The threading hole passes through, and decontrols the primary side binding post, the wiring spring elastic force effect under, the primary side binding post with
The wiring conducting strip to decline, the line for treating survey line road is compressed, so as to realize the adapter sleeve and circuit to be measured
Connection, it is simple and convenient, it is favorably improved wireline inspection efficiency；During device normal work, secondary circuit is in connected state,
Now the electromagnet is powered, by magnetic attraction overcome it is described alarm spring elastic force, make the movable conducting strip with it is described solid
Determine conducting strip disengaging, the loop that the alarm is formed with the battery is off, when secondary circuit electric shock short circuit
When, the secondary fuse disconnects, now the electromagnet dead electricity, drives the activity to lead using the elastic force of the alarm spring
Electric piece rises, and the movable conducting strip is contacted with the fixed-conductive film, makes the battery and alarm composition
Circuit communication, alarmed by the alarm, remind operating personnel to carry out Measuring error to circuit in time.
Preferably, the shell body lower end is provided with mounting seat, mounting seat longitudinal direction both sides are provided with side
Supporting plate.
Burnt preferably, the shell body upper end is provided with fin, the fin and the shell body using ceramics
Tie integrated molding.
Preferably, the guard box side be provided with sealing fastening plug, and it is described sealing fastening plug be internally provided with it is logical
Hole.
Preferably, the wiring shell is made of ceramics, and connect with the shell body integrated molding, the primary side
Terminal upper end is provided with insulating lid.
Preferably, the fixed-conductive film shares two, and it is symmetrical, the alarm spring, which is located at the fixation, leads
Between electric piece, the movable conducting strip is located at below the fixed-conductive film.
Beneficial effect is：1st, the connection of primary side binding post and circuit to be detected is realized by threading hole, in wiring spring
Elastic reaction under, drive primary side binding post to decline by wiring conducting strip, realize the fastening of primary side wiring, patching operations are simple
It is convenient, it is favorably improved wireline inspection efficiency；
2nd, when secondary circuit occurs short-circuit, secondary fuse disconnects, electromagnet dead electricity, and movable conducting strip is in alarm spring
Elastic force acts on lower rise and contacted with fixed-conductive film, so that battery and alarm form loop, is realized certainly by alarm
Dynamic alarm, reminds operating personnel to exclude line fault in time.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the dimensional structure diagram of the present invention；
Fig. 2 is the internal structure schematic diagram of the present invention；
Fig. 3 is the warning device structural representation of the present invention；
Fig. 4 is the quick coupling structure schematic diagram of the present invention.
Description of reference numerals is as follows：
1st, mounting seat；101st, lateral bolster fagging；102nd, fin；2nd, shell body；3rd, warning device；301st, alarm；
302nd, warning box；303rd, fixed-conductive film；304th, alarm spring；305th, movable conducting strip；306th, electromagnet；307th, battery；
4th, snap joint；401st, wiring shell；402nd, primary side binding post；403rd, insulating lid；404th, threading hole；405th, wiring spring；
406th, wiring conducting strip；5th, guard box；6th, sealing fastening plug；7th, secondary binding post；8th, primary side fuse；9th, iron core；10th, primary side
Winding；11st, secondary fuse；12nd, vice-side winding.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical scheme will be carried out below
Detailed description.Obviously, described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are resulting on the premise of creative work is not made to be owned
Other embodiment, belong to the scope that the present invention is protected.
Referring to shown in Fig. 1-Fig. 4, the invention provides a kind of voltage transformer, including shell body 2, the front side of shell body 2 is pacified
Equipped with warning device 3, when secondary circuit short circuit, automatic alarm can be realized by warning device 3, the inside of shell body 2 is installed
Cored 9, the top and bottom of iron core 9 are wound with primary side winding 10 and vice-side winding 12 respectively；Install the inwall both sides of shell body 2
There are primary side fuse 8 and secondary fuse 11, primary side fuse 8 electrically connects with primary side winding 10, secondary fuse 11 and secondary
Winding 12 is electrically connected, and circuit under test is played a protective role by primary side fuse 8, by secondary fuse 11 to secondary circuit
Play a protective role；The upper end of shell body 2 is provided with snap joint 4, and snap joint 4 electrically connects with primary side fuse 8, by quick
Joint 4 is capable of the quick links of realization device and circuit under test；The side of shell body 2 is provided with guard box 5, and the inside of guard box 5 is pacified
Equipped with secondary binding post 7, secondary binding post 7 electrically connects with secondary fuse 11；
Warning device 3 includes warning box 302, electromagnet 306, and warning box 302 is fixedly mounted on the front side of shell body 2, alarm
The inside both sides of case 302 are provided with battery 307, electromagnet 306, and electromagnet 306 electrically connects with secondary fuse 11；Warning box
302 surfaces are provided with alarm 301, and alarm 301 electrically connects with battery 307；The inner top of warning box 302 is provided with fixation and led
Electric piece 303 and alarm spring 304, fixed-conductive film 303 electrically connect with battery 307；Alarm spring 304 end is provided with activity
Conducting strip 305, movable conducting strip 305 electrically connect with alarm 301；
Snap joint 4 includes wiring shell 401, primary side binding post 402, and wiring shell 401 is fixedly mounted on shell body 2
End, the internal slide of wiring shell 401 are provided with primary side binding post 402, and the top of primary side binding post 402 is provided with threading hole 404, former
The bottom of side binding post 402 is provided with wiring conducting strip 406, and wiring conducting strip 406 electrically connects with primary side fuse 8；Primary side wiring
The outside of post 402 is provided with wiring spring 405, the both ends of wiring spring 405 respectively with wiring conducting strip 406 and wiring shell 401
It is connected.
As optional embodiment, the lower end of shell body 2 is provided with mounting seat 1, and dress is easy to implement by mounting seat 1
The installation put, 1 longitudinal both sides of mounting seat are provided with lateral bolster fagging 101, and auxiliary branch can be played by lateral bolster fagging 101
Support acts on, and helps to ensure that device stationarity；
The upper end of shell body 2 is provided with fin 102, and fin 102 and shell body 2 use ceramic post sintering integrated molding,
Insulating effect and thermolysis can be played, helps to ensure that the performance of device；
The side of guard box 5 is provided with sealing fastening plug 6, and seals fastening plug 6 and be internally provided with through hole, being capable of realization device
With detecting the connection of circuit, while sealing fastening effect is played, prevented because external force causes connection to loosen；
Wiring shell 401 is made of ceramics, and is provided with the integrated molding of shell body 2, the upper end of primary side binding post 402
Insulating lid 403, it is easy to pull primary side binding post 402, so as to the connection of quick realization device and circuit under test；
Fixed-conductive film 303 shares two, and symmetrical, and alarm spring 304 is living between fixed-conductive film 303
Moving conductive piece 305 is located at the lower section of fixed-conductive film 303, in secondary circuit short circuit, movable conducting strip 305 can be ensured with fixing
Conducting strip 303 fully contacts, to realize that automatic alarm provides possibility.
Using said structure, the present apparatus pulls primary side binding post 402, overcomes wiring applied in 10KV electric power system
The elastic force of spring 405, spill the threading hole 404 on the top of primary side binding post 402, by the line of circuit to be measured from threading hole 404
Pass through, decontrol primary side binding post 402, under the elastic force effect of wiring spring 405, primary side binding post 402 is with wiring conducting strip
406 decline, and the line for treating survey line road is compressed, simple and convenient so as to realize the connection of adapter sleeve and circuit to be measured,
It is favorably improved wireline inspection efficiency；During device normal work, secondary circuit is in connected state, and now electromagnet 306 is powered,
The elastic force of alarm spring 304 is overcome by magnetic attraction, movable conducting strip 305 is departed from fixed-conductive film 303, alarm 301
The loop formed with battery 307 is off, and when secondary circuit electric shock is short-circuit, secondary fuse 11 disconnects, now
The dead electricity of electromagnet 306, drive movable conducting strip 305 to rise using the elastic force for spring 304 of alarming, make movable conducting strip 305 with consolidating
Determine conducting strip 303 to contact, the circuit communication for forming battery 307 and alarm 301, alarmed, carried by alarm 301
Awake operating personnel carry out Measuring error to circuit in time.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (6)
1. a kind of voltage transformer, including shell body (2), it is characterised in that：Shell body (2) installed in front has warning device
(3) cored (9), are installed inside the shell body (2), the top and bottom of the iron core (9) are wound with primary side winding respectively
And vice-side winding (12) (10)；Shell body (2) the inwall both sides are provided with primary side fuse (8) and secondary fuse (11),
The primary side fuse (8) electrically connects with the primary side winding (10), the secondary fuse (11) and the vice-side winding
(12) electrically connect；Shell body (2) upper end is provided with snap joint (4), the snap joint (4) and the primary side fuse
(8) electrically connect；Shell body (2) side is provided with guard box (5), and secondary binding post is provided with inside the guard box (5)
(7), the secondary binding post (7) electrically connects with the secondary fuse (11)；
The warning device (3) includes warning box (302), electromagnet (306), and the warning box (302) is fixedly mounted on described
On front side of shell body (2), the internal both sides of the warning box (302) are provided with battery (307), electromagnet (306), the electromagnet
(306) electrically connected with the secondary fuse (11)；Warning box (302) surface is provided with alarm (301), the alarm
Device (301) electrically connects with the battery (307)；Warning box (302) inner top is provided with fixed-conductive film (303) and report
Alert spring (304), the fixed-conductive film (303) electrically connect with the battery (307)；Described alarm spring (304) end
Movable conducting strip (305) is installed, the movable conducting strip (305) electrically connects with the alarm (301)；
The snap joint (4) includes wiring shell (401), primary side binding post (402), the fixed peace of the wiring shell (401)
Mounted in the shell body (2) upper end, wiring shell (401) internal slide is provided with the primary side binding post (402), described
Primary side binding post (402) top is provided with threading hole (404), and primary side binding post (402) bottom is provided with wiring conducting strip
(406), the wiring conducting strip (406) electrically connects with the primary side fuse (8)；Set on the outside of the primary side binding post (402)
Be equipped with wiring spring (405), the both ends of the wiring spring (405) respectively with the wiring conducting strip (406) and the wiring
Shell (401) is connected.
A kind of 2. voltage transformer according to claim 1, it is characterised in that：Shell body (2) lower end is provided with installation
Base (1), the longitudinal both sides of the mounting seat (1) are provided with lateral bolster fagging (101).
A kind of 3. voltage transformer according to claim 1, it is characterised in that：Shell body (2) upper end is provided with radiating
Piece (102), the fin (102) and the shell body (2) use ceramic post sintering integrated molding.
A kind of 4. voltage transformer according to claim 1, it is characterised in that：Guard box (5) side is provided with sealing
Fastening plug (6), and the sealing fastening plug (6) is internally provided with through hole.
A kind of 5. voltage transformer according to claim 1, it is characterised in that：The wiring shell (401) is made using ceramics
Into, and insulating lid (403) is installed with the shell body (2) integrated molding, primary side binding post (402) upper end.
A kind of 6. voltage transformer according to claim 1, it is characterised in that：The fixed-conductive film (303) shares two,
And it is symmetrical, the alarm spring (304) is between the fixed-conductive film (303), movable conducting strip (305) position
Below the fixed-conductive film (303).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710991359.3A CN107799289A (en) | 2017-10-21 | 2017-10-21 | A kind of voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710991359.3A CN107799289A (en) | 2017-10-21 | 2017-10-21 | A kind of voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107799289A true CN107799289A (en) | 2018-03-13 |
Family
ID=61533465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710991359.3A Pending CN107799289A (en) | 2017-10-21 | 2017-10-21 | A kind of voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107799289A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113223906A (en) * | 2021-03-24 | 2021-08-06 | 盛东风 | Recoverable fuse based on thermoelectric and magnetocaloric effects |
| CN113963922A (en) * | 2021-10-22 | 2022-01-21 | 国网四川省电力公司遂宁供电公司 | Automatic regulator for transformer overload |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201868221U (en) * | 2010-07-17 | 2011-06-15 | 浙江华建电气有限公司 | Voltage transformer with fuse |
| CN202523539U (en) * | 2011-11-15 | 2012-11-07 | 特变电工股份有限公司 | Converter transformer |
| CN204215887U (en) * | 2014-11-27 | 2015-03-18 | 宁波同禾互感器有限公司 | A kind of voltage transformer |
| CN204695951U (en) * | 2015-06-05 | 2015-10-07 | 重庆华虹仪表有限公司 | Modified model voltage transformer |
| CN205564502U (en) * | 2016-04-18 | 2016-09-07 | 象山艾尔沃特智能科技有限公司 | Warning voltage transformer |
| KR20160114975A (en) * | 2015-03-25 | 2016-10-06 | 주식회사 평일 | potential transformer having separation type fuse |
| CN205846710U (en) * | 2016-06-08 | 2016-12-28 | 宁波欧日力电器制造有限公司 | A kind of protection device of fuse |
| CN207425602U (en) * | 2017-10-21 | 2018-05-29 | 重庆华虹仪表有限公司 | A kind of voltage transformer |
-
2017
- 2017-10-21 CN CN201710991359.3A patent/CN107799289A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201868221U (en) * | 2010-07-17 | 2011-06-15 | 浙江华建电气有限公司 | Voltage transformer with fuse |
| CN202523539U (en) * | 2011-11-15 | 2012-11-07 | 特变电工股份有限公司 | Converter transformer |
| CN204215887U (en) * | 2014-11-27 | 2015-03-18 | 宁波同禾互感器有限公司 | A kind of voltage transformer |
| KR20160114975A (en) * | 2015-03-25 | 2016-10-06 | 주식회사 평일 | potential transformer having separation type fuse |
| CN204695951U (en) * | 2015-06-05 | 2015-10-07 | 重庆华虹仪表有限公司 | Modified model voltage transformer |
| CN205564502U (en) * | 2016-04-18 | 2016-09-07 | 象山艾尔沃特智能科技有限公司 | Warning voltage transformer |
| CN205846710U (en) * | 2016-06-08 | 2016-12-28 | 宁波欧日力电器制造有限公司 | A kind of protection device of fuse |
| CN207425602U (en) * | 2017-10-21 | 2018-05-29 | 重庆华虹仪表有限公司 | A kind of voltage transformer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113223906A (en) * | 2021-03-24 | 2021-08-06 | 盛东风 | Recoverable fuse based on thermoelectric and magnetocaloric effects |
| CN113963922A (en) * | 2021-10-22 | 2022-01-21 | 国网四川省电力公司遂宁供电公司 | Automatic regulator for transformer overload |
| CN113963922B (en) * | 2021-10-22 | 2023-06-30 | 国网四川省电力公司遂宁供电公司 | Overload automatic regulating device for transformer |
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Effective date of registration: 20180408 Address after: 400799, Longfeng bridge, Beibei District, Chongqing, No. 258 Applicant after: Chongqing Huahong Instrument Co., Ltd. Address before: 400799, Longfeng bridge, Beibei District, Chongqing, No. 258 Applicant before: Ji Weilong |