CN203552919U - Voltage transformer with high and low voltage fuse protection function - Google Patents
Voltage transformer with high and low voltage fuse protection function Download PDFInfo
- Publication number
- CN203552919U CN203552919U CN201320754157.4U CN201320754157U CN203552919U CN 203552919 U CN203552919 U CN 203552919U CN 201320754157 U CN201320754157 U CN 201320754157U CN 203552919 U CN203552919 U CN 203552919U
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- Prior art keywords
- voltage
- transformer
- fuse
- low
- tension
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- Expired - Lifetime
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- 238000004804 winding Methods 0.000 claims abstract description 32
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000004593 Epoxy Substances 0.000 claims description 15
- 239000003822 epoxy resin Substances 0.000 abstract 2
- 229920000647 polyepoxide Polymers 0.000 abstract 2
- 238000009413 insulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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Abstract
The utility model relates to a voltage transformer with the high and low voltage fuse protection function. The voltage transformer with the high and low voltage fuse protection function comprises an iron core, a primary winding and one or more secondary windings, wherein the iron core is integrally poured inside an epoxy resin outer shell; high voltage fuses are connected to high voltage lead terminals of the primary winding; the loops of the secondary windings are connected with low voltage fuses in series. The high voltage fuses and the low voltage fuses are connected to the primary winding and the secondary windings of the transformer in series, and the epoxy resin outer shell is integrally poured on the transformer through the high voltage fuses and the low voltage fuses, so that the voltage transformer is simple in structure and convenient to use, install and maintain, can be effectively prevented from burning by wiring errors, and improves the using safety performance.
Description
Technical field
The utility model relates to voltage transformer, is a kind of voltage transformer with the protection of high and low pressure fuse specifically.
Background technology
Voltage transformer is the main components in switch cubicle, and tradition adopts two single-phase potential transformers to be used in conjunction with, more corresponding two fuses of installing are realized voltage measurement or electic protection respectively.Along with instrument transformer industry development, the application of primary circuit band fuse instrument transformer, had simplified inside switch cabinet layout to a certain extent in recent years.But the secondary circuit of instrument transformer needs to install separately overcurrent protection; exist the drawbacks such as loaded down with trivial details, insulating space is nervous, easy wiring error causes that instrument transformer burns are installed; usage safety performance is low, brings very large inconvenience to instrument transformer manufacturing firm, switch cubicle manufactory, electric power system and user.
Summary of the invention
For above shortcomings part in prior art, it is a kind of simple in structure, compact that the utility model provides, and insulation is reliable, can effectively prevent that instrument transformer from burning, and uses stable, the safe voltage transformer with the protection of high and low pressure fuse.
The utility model adopts following technical scheme: a kind of voltage transformer with the protection of high and low pressure fuse; comprise that one is cast in the iron core in epoxy package, a winding and an above secondary winding; on the high-voltage connection terminal of a winding, be connected with high-tension fuse, it is characterized in that being serially connected with low-tension fuse in the loop of described secondary winding.
Described epoxy package lower sides is provided with secondary terminal box, and low tension terminal and the low-tension fuse of secondary winding are all arranged in secondary terminal box.
Described epoxy package top is provided with stick harness one time, and high-tension fuse is arranged in a stick harness and through being arranged at a spring in stick harness and connects high-voltage connection terminal.
Described epoxy package top is provided with two stick harnesses, in two stick harnesses, be equipped with high-tension fuse, two high-voltage connection terminals of a winding are all connected with and are placed in the high-tension fuse in stick harness one time, and high-tension fuse connects high-voltage connection terminal through being arranged at a spring in stick harness.
Adopt above technical scheme, the beneficial effects of the utility model are: high-tension fuse is arranged in stick harness and is connected with a winding by spring, in the secondary terminal box of instrument transformer bottom, low tension terminal and low-tension fuse are set simultaneously, instrument transformer compact overall structure, takes up room little, reduces the headspace that switch cubicle uses separately high pressure and low-tension fuse, can effectively utilize instrument transformer space, improve insulation property, prevent that second short circuit from causing instrument transformer to burn, use safety.
The utility model instrument transformer once, be connected in series high and low pressure fuse in secondary winding, by high and low pressure fuse one on instrument transformer, pour into epoxy package, it is simple in structure, use, installation, easy to maintenance, can effectively avoid wiring error to cause burning of voltage transformer, improve usage safety performance.
Accompanying drawing explanation
Fig. 1 is the utility model circuit diagram;
Fig. 2 is the utility model structural representation;
Fig. 3 is Fig. 1 left view.
In figure: a stick harness 1, high-tension fuse 2, spring 3,4, windings 5 unshakable in one's determination, secondary winding 6, epoxy package 7, low-tension fuse 8, secondary connection post 9, secondary terminal box 10.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
Shown in Fig. 1; a kind of voltage transformer with the protection of high and low pressure fuse; comprise on two high-voltage connection terminals of 4, windings 5 unshakable in one's determination and 6, windings 5 of two secondary winding and be all connected with high-tension fuse 2, in the loop of secondary winding 6, be serially connected with low-tension fuse 8.
Shown in Fig. 2-3, a kind of voltage transformer with high and low pressure fuse protection comprises stick harness 1, high-tension fuse 2, spring 3,4, windings 5, secondary winding 6, epoxy package 7, low-tension fuse 8, secondary connection post 9 and secondary terminal boxes 10 unshakable in one's determination.Unshakable in one's determination 4, a winding 5 and an above corresponding one of secondary winding 6 are cast in epoxy package 7, epoxy package 7 lower sides are provided with secondary terminal box 10, secondary connection post 9 and low-tension fuse 8 that secondary winding 6 is located at respectively on two binding posts are all arranged in secondary terminal box 10, epoxy package 7 tops are provided with two stick harnesses 1, in two stick harnesses 1, be equipped with high-tension fuse 2, two high-voltage connection terminals of a winding 5 connect and are placed in the high-tension fuse 2 in stick harness 1 one time through spring 3 respectively, the bottom of epoxy package 7 is provided with footing.
Claims (4)
1. the voltage transformer with high and low pressure fuse protection; comprise that one is cast in the iron core in epoxy package, a winding and an above secondary winding; on the high-voltage connection terminal of a winding, be connected with high-tension fuse, it is characterized in that: in the loop of described secondary winding, be serially connected with low-tension fuse.
2. a kind of voltage transformer with high and low pressure fuse protection according to claim 1; it is characterized in that: described epoxy package lower sides is provided with secondary terminal box, low tension terminal and the low-tension fuse of secondary winding are all arranged in secondary terminal box.
3. a kind of voltage transformer with high and low pressure fuse protection according to claim 1 and 2; it is characterized in that: described epoxy package top is provided with stick harness one time, high-tension fuse is arranged in a stick harness and through being arranged at a spring in stick harness and connects high-voltage connection terminal.
4. a kind of voltage transformer with high and low pressure fuse protection according to claim 1 and 2; it is characterized in that: described epoxy package top is provided with two stick harnesses; in two stick harnesses, be equipped with high-tension fuse; two high-voltage connection terminals of a winding are all connected with and are placed in the high-tension fuse in stick harness one time, and high-tension fuse connects high-voltage connection terminal through being arranged at a spring in stick harness.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201320754157.4U CN203552919U (en) | 2013-11-26 | 2013-11-26 | Voltage transformer with high and low voltage fuse protection function |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201320754157.4U CN203552919U (en) | 2013-11-26 | 2013-11-26 | Voltage transformer with high and low voltage fuse protection function |
Publications (1)
Publication Number | Publication Date |
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CN203552919U true CN203552919U (en) | 2014-04-16 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201320754157.4U Expired - Lifetime CN203552919U (en) | 2013-11-26 | 2013-11-26 | Voltage transformer with high and low voltage fuse protection function |
Country Status (1)
Country | Link |
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CN (1) | CN203552919U (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104021927A (en) * | 2014-05-30 | 2014-09-03 | 大连和源电器有限公司 | Outdoor voltage transformer with fuse protection on high-voltage side and low-voltage side |
CN106024342A (en) * | 2016-07-06 | 2016-10-12 | 江苏科兴电器有限公司 | 3-35kV self-recovery and short circuit preventing voltage transformer |
CN107768123A (en) * | 2017-10-23 | 2018-03-06 | 湖北霞光电力设备有限公司 | A kind of intelligent power-off protection electromagnetic potential transformer |
CN107768076A (en) * | 2017-11-06 | 2018-03-06 | 江苏科兴电器有限公司 | A kind of transformer with waterproof and anti-false wiring function |
CN109755010A (en) * | 2019-03-13 | 2019-05-14 | 浙江天际互感器有限公司 | A kind of voltage transformer with air duct radiation and secondary fusing |
-
2013
- 2013-11-26 CN CN201320754157.4U patent/CN203552919U/en not_active Expired - Lifetime
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104021927A (en) * | 2014-05-30 | 2014-09-03 | 大连和源电器有限公司 | Outdoor voltage transformer with fuse protection on high-voltage side and low-voltage side |
CN106024342A (en) * | 2016-07-06 | 2016-10-12 | 江苏科兴电器有限公司 | 3-35kV self-recovery and short circuit preventing voltage transformer |
CN107768123A (en) * | 2017-10-23 | 2018-03-06 | 湖北霞光电力设备有限公司 | A kind of intelligent power-off protection electromagnetic potential transformer |
CN107768076A (en) * | 2017-11-06 | 2018-03-06 | 江苏科兴电器有限公司 | A kind of transformer with waterproof and anti-false wiring function |
CN109755010A (en) * | 2019-03-13 | 2019-05-14 | 浙江天际互感器有限公司 | A kind of voltage transformer with air duct radiation and secondary fusing |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CX01 | Expiry of patent term |
Granted publication date: 20140416 |
|
CX01 | Expiry of patent term |