CN205810565U - A kind of metal shell three-phase ground voltage transformer - Google Patents
A kind of metal shell three-phase ground voltage transformer Download PDFInfo
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- CN205810565U CN205810565U CN201620705439.9U CN201620705439U CN205810565U CN 205810565 U CN205810565 U CN 205810565U CN 201620705439 U CN201620705439 U CN 201620705439U CN 205810565 U CN205810565 U CN 205810565U
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- metal shell
- voltage
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- voltage transformer
- base plate
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Abstract
This utility model relates to a kind of metal shell three-phase ground voltage transformer, three voltage transformers of metal shell sealing cover are on base plate, metal shell upper surface is provided with three SOI sebific ducts of corresponding three voltage transformers, external lead wire contact on SOI sebific duct, header contacts external lead wire spring, the high-tension fuse of winding equal band spring of every voltage transformer, connect guide rod and connect cross-under SOI sebific duct connecting lead wire contact, every voltage transformer is supported on base plate and the Secondary Winding lead-in wire of its Secondary Winding passes at metal shell side lower, quasiconductor is scribbled outside metal shell, filling epoxy resin in metal shell, high-tension fuse is through insulation plug encapsulation, the iron core of every voltage transformer is trapezoidal iron core.
Description
Technical field
This utility model relates to a kind of voltage transformer, a kind of metal shell three-phase ground voltage transformer.
Background technology
Voltage transformer is one of main components material in whole switch cubicle, in order to realize three-phase voltage metering, survey
Amount, electic protection, for three-phase and four-line loop, three single-phase potential transformers compositions of general employing, pacify again in transformer front end
Fill a fuse.Commonly used along with gas-filling cabinet in recent years, the transformer of the Single Phase Metal shell of band fuse is developed into
Merit and applying on a small quantity, the part simplifying switch cubicle to a certain extent installs, but appoints to exist and install loaded down with trivial details, and insulating space is relative
The problems such as anxiety.Be all at present single-phase transformers be main, between three single-phase transformers in order to install, easy to maintenance, mutually it
Between have spacing.Due to the requirement of switch cubicle increasingly miniaturization, existing transformer can not meet the need of new Inflatable cabinet switch cabinet
Want, it is also very desirable to a kind of smaller volume, safe and reliable three-phase integrated gas-filling cabinet voltage transformer.
Summary of the invention
The metal shell three-phase that the purpose of this utility model is to provide a kind of compact conformation, volume is little, safe and reliable
Earthed voltage transformer.
The technical solution adopted in the utility model is: a kind of metal shell three-phase ground voltage transformer, including base plate, gold
Belong to shell and three voltage transformers, it is characterised in that: three voltage transformers of described metal shell sealing cover on base plate, metal
Shell upper surface is provided with three SOI sebific ducts of corresponding three voltage transformers, external lead wire contact on SOI sebific duct,
Header contacts external lead wire spring, the high-tension fuse of a winding equal band spring of every voltage transformer, connection guide rod
Even cross-under SOI sebific duct connecting lead wire contact, every voltage transformer is supported on base plate and the Secondary Winding of its Secondary Winding
Lead-in wire passes at metal shell side lower, scribbles quasiconductor outside described metal shell, filling epoxy resin in metal shell, high
Pressure fuse is through insulation plug encapsulation, and the iron core of every voltage transformer is trapezoidal iron core.
Further, every voltage transformer is also with residue winding, and the residue winding coupling of three voltage transformers becomes
Open-delta, draws the angular aperture voltage as insulating monitoring protection.
Yet further, the Secondary Winding of every voltage transformer is by chassis ground.
During use, lead-in wire spring, header contacts, SOI gum cover pipe are telescopic joint with outside inner cone, and three-phase voltage is mutual
Sensor is connected in parallel in power circuit.Owing to metal shell, the base plate of three-phase transformer are ground connection, metal shell, mutual induction of voltage
Device earth terminal and base plate link together and make whole transformer outside formation isoelectric level, ground connection during use, the most whole transformer
During operation, whole transformer outer surface, in zero potential, is in no-voltage condition, safe and reliable to operation.Threephase potential transformer
Band residue winding own, residue winding coupling becomes open-delta, draws angular aperture voltage, uses as insulating monitoring protection.Will
Poured with epoxy resin, in metal shell, makes this transformer form integral structure.High-tension fuse is connected by connecting guide rod,
High-tension fuse is connected by winding of spring and voltage transformer.Owing to transformer uses trapezoidal iron core, make transformer work
When making, Electric Field Distribution is uniformly conducive to the process that whole mutual inductance general ability is put.This transformer volume is little, lightweight, compact conformation, cloth
Office is reasonable, easy for installation, and energy-saving effect is obvious.
Header contacts is connected with high-tension fuse by connecting rod, then is connected with a winding.Use trapezoidal iron core, coil
Between insulate compact, be effectively utilized the space of transformer, make whole three-phase transformer volume little, reduce loss, and end simultaneously
Portion's field intensity is uniform, is greatly improved anti-overvoltage and the impact resistance of product.35kV and following middle die pressing product are made and are put product without office.
Promote the electric property of transformer, reduce voltage transformer accident rate in use.Owing to transformer band remains winding,
According to actual needs earth protective device can be installed；The time installed due to transformer three-phase integrated minimizing transformer；Integrally
It is encapsulated in metal shell, and three header contacts of one-time contact are all in metal shell upper surface, can reduce gas-filled switching tube
The overall dimensions of transformer kept for by cabinet.High-tension fuse realizes the function of protection transformer, reduces transformer and burns, improves system
The safety that system runs.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation figure；
Fig. 2 is the internal structure schematic diagram of Fig. 1.
In figure: lead-in wire spring 1, header contacts 2, SOI sebific duct 3, epoxy resin 4, scribble the metal shell 5 of quasiconductor,
Base plate 6, connects guide rod 7, spring 8, high-tension fuse 9, and insulate plug 10, trapezoidal iron core 11, and Secondary Winding 12 remains winding
13, a winding 14, Secondary Winding lead-in wire 15.
Detailed description of the invention
It is described further below in conjunction with drawings and Examples.
Fig. 1, shown in 2: a kind of metal shell three-phase ground voltage transformer includes base plate 6, outside the metal that scribbles quasiconductor
Shell 5 and three voltage transformers, through three voltage transformers of epoxy resin 4 sealing cover and pairing mutual induction of voltage in metal shell 5
The high-tension fuse 9 of the band spring 8 of device is on base plate 6, and metal shell 5 upper surface scribbling quasiconductor is provided with corresponding three electricity
Three SOI sebific ducts 3 of pressure transformer, external lead wire contact 2 on SOI sebific duct 3, header contacts 2 external lead wire spring 1,
The high-tension fuse 9 of the equal band spring 8 of winding 14 of every voltage transformer, connection guide rod 7 even cross-under SOI sebific duct 3
Connecting lead wire contact 2, every voltage transformer is supported on base plate 6 and the Secondary Winding lead-in wire 15 of its Secondary Winding 12 is scribbling
Metal shell 5 side lower of quasiconductor passes, and high-tension fuse 9 encapsulates through insulation plug 10, the ferrum of every voltage transformer
Core is trapezoidal iron core 11.
Further, every voltage transformer is also with residue winding 13, the residue winding coupling of three voltage transformers
Become open-delta, draw the angular aperture voltage as insulating monitoring protection.
Yet further, the Secondary Winding of every voltage transformer is by chassis ground.
Claims (3)
1. a metal shell three-phase ground voltage transformer, including base plate, metal shell and three voltage transformers, its feature
It is: three voltage transformers of described metal shell sealing cover are on base plate, and metal shell upper surface is provided with corresponding three voltages
Three SOI sebific ducts of transformer, external lead wire contact on SOI sebific duct, header contacts external lead wire spring, every voltage
The high-tension fuse of winding equal band spring of transformer, connection guide rod connect cross-under SOI sebific duct connecting lead wire contact,
Every voltage transformer is supported on base plate and the Secondary Winding lead-in wire of its Secondary Winding passes at metal shell side lower, institute
Stating and scribble quasiconductor outside metal shell, filling epoxy resin in metal shell, high-tension fuse is through insulation plug encapsulation, every electricity
The iron core of pressure transformer is trapezoidal iron core.
A kind of metal shell three-phase ground voltage transformer the most according to claim 1, is characterized in that: every mutual induction of voltage
Device is also with residue winding, and the residue winding coupling of three voltage transformers becomes open-delta, draws and protects as insulating monitoring
The angular aperture voltage protected.
A kind of metal shell three-phase ground voltage transformer the most according to claim 1, is characterized in that: every mutual induction of voltage
The Secondary Winding of device is by chassis ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620705439.9U CN205810565U (en) | 2016-07-06 | 2016-07-06 | A kind of metal shell three-phase ground voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620705439.9U CN205810565U (en) | 2016-07-06 | 2016-07-06 | A kind of metal shell three-phase ground voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205810565U true CN205810565U (en) | 2016-12-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620705439.9U Active CN205810565U (en) | 2016-07-06 | 2016-07-06 | A kind of metal shell three-phase ground voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205810565U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105957704A (en) * | 2016-07-06 | 2016-09-21 | 江苏科兴电器有限公司 | Three-phase grounded voltage transformer with metal shell |
| CN107170567A (en) * | 2017-04-18 | 2017-09-15 | 重庆祥龙电气股份有限公司 | A kind of same period isolating transformer |
-
2016
- 2016-07-06 CN CN201620705439.9U patent/CN205810565U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105957704A (en) * | 2016-07-06 | 2016-09-21 | 江苏科兴电器有限公司 | Three-phase grounded voltage transformer with metal shell |
| CN107170567A (en) * | 2017-04-18 | 2017-09-15 | 重庆祥龙电气股份有限公司 | A kind of same period isolating transformer |
| CN107170567B (en) * | 2017-04-18 | 2023-06-09 | 重庆祥龙电气股份有限公司 | Synchronous isolation transformer |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |