CN208781689U - Switchgear ground-type potential transformer - Google Patents
Switchgear ground-type potential transformer Download PDFInfo
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- CN208781689U CN208781689U CN201821696724.4U CN201821696724U CN208781689U CN 208781689 U CN208781689 U CN 208781689U CN 201821696724 U CN201821696724 U CN 201821696724U CN 208781689 U CN208781689 U CN 208781689U
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- insulator
- type potential
- potential transformer
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- switchgear
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Abstract
The utility model relates to electric system high-tension measurement or relay protection device, in particular to a kind of switchgear ground-type potential transformer.Including mounting base, the insulator being set on mounting base and it is sealed and placed in the intracorporal transformer body of insulation, wherein the top of insulator is equipped with a high-voltage connection terminal, the outer lateral edge short transverse of high-voltage connection terminal is equipped with multiple full skirts with identical arc, the front bottom end of insulator is equipped with secondary connection seat, and the rear end of mounting base is equipped with ground terminal.The utility model is poured using epoxide resin vacuum, has many advantages, such as small in size, good appearance, flexible for installation, easy to maintain.
Description
Technical field
The utility model relates to electric system high-tension measurement or relay protection device, in particular to a kind of switchgear ground connection
Formula voltage transformer.
Background technique
Voltage transformer is used as in the power system to measuring instrument, instrument or relay protection, and control device transmits information
Major electrical components, installation space, mounting means, small product size, properties of product, product capacity etc. have stringent want
It asks.With electrical modernization development, the matched switchgear of voltage transformer has become urban industry park, residential area, quotient
The departments such as industry center, industrial and mining enterprises are most preferably setting for electric energy distribution, control and electic protection as power supply unit and terminal device
It is standby；Common voltage mutual inductor is because volume is big, capacity is small, installation is complicated, the disadvantages of need to safeguarding；Make the switchgear to form a complete production network
The defects of bigger there is volume, in order to realize that the volume miniaturization of switch cabinet equipment, capacity is big, the functions such as flexible for installation are special
Point, it is accordingly required in particular to which development and design goes out the totally enclosed Special grounding formula voltage transformer of a kind of small size, large capacity, subtracts on the whole
The size of small switchgear, the technical equipment of lifting switch cabinet, while reducing the economic cost of switchgear, improve switch
The market competitiveness of cabinet.
Utility model content
In view of the above-mentioned problems, the purpose of this utility model is to provide a kind of switchgear ground-type potential transformer, with
Change the status that existing voltage transformer volume is big, capacity is small, installation is complicated, maintenance is cumbersome.
To achieve the goals above, the utility model uses following technical scheme:
A kind of switchgear ground-type potential transformer, including mounting base, the insulation being set on the mounting base
Body and it is sealed and placed in the intracorporal transformer body of the insulation, wherein the top of insulator is equipped with a high-voltage connection terminal, described
The outer lateral edge short transverse of high-voltage connection terminal is equipped with multiple full skirts with identical arc, the front end bottom of the insulator
Portion is equipped with secondary connection seat, and the rear end of the mounting base is equipped with ground terminal.
High-voltage connection terminal is cylindrical structure, and the full skirt is the circle vertical with the axis of the cylindrical body
Shape structure, multiple full skirts are parallel to each other.
It is truncated rectangular pyramids structure that the shape of the insulator, which is at the top of tetragonal body structure and the tetragonal body structure,.
The four corners of the tetragonal body structure division of the insulator are equipped with chamfering.
Bulge-structure is symmetrically arranged at left and right sides of the insulator.
The shape of the bulge-structure is horizontally extending truncated rectangular pyramids structure.
The bottom of the bulge-structure is equipped with groove along the longitudinal direction.
Envelope is equipped with secondary wiring terminals and is once grounded N-terminal, the outside of the secondary connection seat in the secondary connection seat
It is covered with secondary protection cover, the secondary protection cover uses transparent material system
The transformer body includes iron core, secondary winding and first winding, and the secondary winding and first winding are by interior
It is wound on an insulation framework upper rear set with one heart on iron core to outer.
High-voltage connection terminal and the secondary connection seat and the insulator use poured with epoxy resin for one
Body formula structure.
The utility model have the following advantages that and the utility model has the advantages that
1. small in size, function is complete: the utility model optimizing structure design, product uses c-type iron core, compact-sized volume
Small, capacity is big, and the corollary new voltage transformer for being more applicable for switchgear uses；
2. easy for installation, easy to maintain: when the utility model is installed and used, only mutual inductor need to be mounted on switch according to phase sequence
In cabinet, the assembly time of switchgear is effectively saved；Product is simpler when overhauling, and does not need special maintenance work；
3. insulation is stablized, safe operation: the utility model is formed using epoxide resin material is integrated poured, and insulation is reliable；
One time high-voltage connection terminal has full skirt design, increases a creepage distance, effectively reduces switchgear size, have from design
Effect avoids many hidden danger of quality, guarantees that operation is safer.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the B-B cross-sectional view of Fig. 1；
Fig. 3 is the top view of Fig. 1.
In figure: 1 is iron core, and 2 be secondary winding, and 3 be first winding, and 4 be a high-voltage connection terminal, and 5 be secondary connection
Seat, 6 be mounting base, and 7 be insulator, and 8 be full skirt, and 9 be groove, and 10 be secondary protection cover, and 11 be ground terminal, and 12 be protrusion
Structure.
Specific embodiment
In order to keep the purpose of this utility model, technical solution and advantage clearer, with reference to the accompanying drawing and it is embodied
The utility model is described in detail in example.
As shown in Figs. 1-2, a kind of switchgear ground-type potential transformer provided by the utility model, including mounting base
6, the insulator 7 being set on mounting base 6 and the transformer body being sealed and placed in insulator 7, wherein the top of insulator 7 is set
The outer lateral edge short transverse of once high-voltage connection terminal 4, a high-voltage connection terminal 4 is equipped with multiple umbrellas with identical arc
Skirt 8 guarantees there are enough creepage distances with ground, and guarantees whole with enough mechanical strengths.The front bottom end of insulator 7 is set
There is secondary connection seat 5, the rear end of mounting base 6 is equipped with ground terminal 11, and ground connection N-terminal and mounting base 6 is facilitated to be grounded.
As shown in figure 3, transformer body includes iron core 1, secondary winding 2 and first winding 3, secondary winding 2 with once around
Group 3 is wound on an insulation framework upper rear set on the iron core 1 of c-type structure with one heart from inside to outside.4 He of high-voltage connection terminal
Secondary connection seat 5 is an integral structure with insulator 7 using poured with epoxy resin.
Secondary connection seat 5 is located at the position that lower part is biased in integral structure front end, increases a high-voltage connection terminal 4
Insulation distance over the ground.Envelope is equipped with secondary wiring terminals and is once grounded N-terminal, the outside of secondary connection seat 5 in secondary connection seat 5
It is covered with secondary protection cover 10, has the function of dustproof and waterproof.Secondary protection cover 10 is made of transparent material, has band thereon
Lead sealing screw.
High-voltage connection terminal 4 is cylindrical structure, and full skirt 8 is the circular configuration vertical with the axis of cylindrical body, more
A full skirt 8 is parallel to each other, and increases surface creepage distance over the ground.
The shape of insulator 7 be truncated rectangular pyramids structure at the top of tetragonal body structure and tetragonal body structure, the four of insulator 7
The four corners of cube structure part are equipped with chamfering, guarantee that insulation is uniform.High-voltage connection terminal 4 is set to the top of truncated rectangular pyramids
Portion, guarantee and an effective electrical contact of high-pressure connection line, and guarantee whole with enough mechanical strengths.Insulator 7
The left and right sides is symmetrically arranged with bulge-structure
12, the shape of bulge-structure 12 is horizontally extending truncated rectangular pyramids structure, and the bottom of bulge-structure 12 is along preceding
Rear direction is equipped with groove 9, will not the excessive dust dirt of long-term accumulation, guarantee product high pressure surface creepage distance over the ground.
The utility model is primarily adapted for use in 35KV switchgear.
The manufacturing process of the utility model is:
Secondary winding 2 and first winding 3 are concentric from inside to outside to be wound on an insulation framework upper rear set on iron core 1, warp
It is fixed in casting mold after crossing insulation and buffering wrapping, has reconnected first winding inserts, connect secondary connection, adjustment insulation
Distance is solidified using epoxide resin vacuum casting, is finally mounted as a whole on a mounting base 6；Become therewith: product
A high-voltage connection terminal there is parallel and identical 8 form of arc full skirt, increase surface creepage distance over the ground；Envelope sets iron core
It 1, is truncated rectangular pyramids above the insulator 7 of first winding 2, secondary winding 3, lower section is that quadrangle chamfering is integrally in cubic shape, is protected
Card insulation is uniform；High-voltage connection terminal at 7 top of insulator is located at top, guarantees effectively electric with a high-pressure connection line
Gas contact, and guarantee whole with enough mechanical strengths；The secondary connection seat 5 set is sealed, it is inclined to be located at integral structure front end
Position to the lower part increases the insulation distance of primary connection terminal over the ground, and secondary connection box cover 10 is made of transparent material,
There is band lead sealing screw thereon, integrally use epoxy resin disposal molding with major insulation body, have the function of dustproof and waterproof.
In use, the mounting base 6 first with voltage transformer is successively mounted in out voltage transformer according to phase sequence distance
Close on bottom of cabinet disk, then access product primary connection terminal, another terminal N is grounded together, finally carry out secondary line cable with
The connection of secondary wiring terminals, and install anti-electricity-theft secondary protection cover 10 additional, 35KV switchgear is assembled with ground-type potential transformer
Work is completed.
The utility model is primarily adapted for use in indoor 35KV switchgear and uses, fully according to national standard and switchgear technical requirements
And a kind of new product designed, iron core is rolled using c-type, using electromagnetic conversion principle, secondary voltage is enable accurately to reflect one
The situation of change of secondary voltage, uses as voltage measurement and relay protection.The utility model using epoxide resin vacuum be poured and
At good appearance, small in size, function is complete, easy for installation, easy to maintain, insulation is stablized, safe operation, more improves voltage
The designing and manufacturing level of mutual inductor switchgear.
The foregoing is merely the embodiments of the present invention, are not intended to limit the protection scope of the utility model.It is all
Any modification, equivalent substitution and improvement made within spirit of the present utility model and principle, extension etc., are all contained in this reality
With in novel protection scope.
Claims (10)
1. a kind of switchgear ground-type potential transformer, which is characterized in that including mounting base (6), be set to the installation
Insulator (7) on bottom plate (6) and the transformer body being sealed and placed in the insulator (7), wherein set at the top of insulator (7)
Once high-voltage connection terminal (4), the outer lateral edge short transverse of a high-voltage connection terminal (4) are equipped with multiple with identical
The front bottom end of the full skirt (8) of arc, the insulator (7) is equipped with secondary connection seat (5), the rear end of the mounting base (6)
Equipped with ground terminal (11).
2. switchgear ground-type potential transformer according to claim 1, which is characterized in that a high-voltage connection
Terminal (4) is cylindrical structure, and the full skirt (8) is the circular configuration vertical with the axis of the cylindrical body, multiple umbrellas
Skirt (8) is parallel to each other.
3. switchgear ground-type potential transformer according to claim 1, which is characterized in that the insulator (7)
It is truncated rectangular pyramids structure that shape, which is at the top of tetragonal body structure and the tetragonal body structure,.
4. switchgear ground-type potential transformer according to claim 3, which is characterized in that the insulator (7)
The four corners of tetragonal body structure division are equipped with chamfering.
5. switchgear ground-type potential transformer according to claim 3, which is characterized in that the insulator (7)
The left and right sides is symmetrically arranged with bulge-structure (12).
6. switchgear ground-type potential transformer according to claim 5, which is characterized in that the bulge-structure (12)
Shape be horizontally extending truncated rectangular pyramids structure.
7. switchgear ground-type potential transformer according to claim 5, which is characterized in that the bulge-structure (12)
Bottom be equipped with groove (9) along the longitudinal direction.
8. switchgear ground-type potential transformer according to claim 1, which is characterized in that the secondary connection seat
(5) envelope is equipped with secondary wiring terminals and is once grounded N-terminal in, and the outside mask of the secondary connection seat (5) is equipped with secondary protection cover
(10), the secondary protection cover (10) is made of transparent material, has band lead sealing screw thereon.
9. switchgear ground-type potential transformer according to claim 1, which is characterized in that the transformer body packet
Include iron core (1), secondary winding (2) and first winding (3), the secondary winding (2) and first winding (3) it is concentric from inside to outside around
In an insulation framework upper rear set on iron core (1).
10. switchgear ground-type potential transformer according to claim 1, which is characterized in that a high-voltage connecting
Line terminals (4) and the secondary connection seat (5) are an integral structure with the insulator (7) using poured with epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821696724.4U CN208781689U (en) | 2018-10-19 | 2018-10-19 | Switchgear ground-type potential transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821696724.4U CN208781689U (en) | 2018-10-19 | 2018-10-19 | Switchgear ground-type potential transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208781689U true CN208781689U (en) | 2019-04-23 |
Family
ID=66163249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821696724.4U Active CN208781689U (en) | 2018-10-19 | 2018-10-19 | Switchgear ground-type potential transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208781689U (en) |
-
2018
- 2018-10-19 CN CN201821696724.4U patent/CN208781689U/en active Active
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