CN209515405U - A kind of large size zero sequence transformer device - Google Patents
A kind of large size zero sequence transformer device Download PDFInfo
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- CN209515405U CN209515405U CN201920437108.5U CN201920437108U CN209515405U CN 209515405 U CN209515405 U CN 209515405U CN 201920437108 U CN201920437108 U CN 201920437108U CN 209515405 U CN209515405 U CN 209515405U
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Abstract
A kind of large size zero sequence transformer device, belongs to current transformer arrangement technical field, for acquiring the zero-sequence current of more large-sized cables simultaneously.Its technical solution is: it is made of iron core and coil, iron core uses crystal grain directional cold-rolling silicon steel disc, iron core is rectangle frame structure, iron core uses four frame pillar full reclining seam constructions, and with glass adhesion belt binding, coil is wound according to 120/5 no-load voltage ratio on iron core top, 9, cable or more that 300 squares of 35KV single of normal laying are placed inside iron core frameworks.The iron core frameworks inner space of the utility model increases, and can place 9, cable of normal laying or more simultaneously, meets the requirement of disposable acquisition multi-cable zero-sequence current.The utility model structure is simple, it is easy to use, be easy to make, zero-sequence current acquisitions can be carried out to more large-sized cables simultaneously, meet zero-sequenceprotection requirement, and live space occupied can be reduced, improve the management level of standardization.
Description
Technical field
The utility model relates to the large-scale zero sequence transformer that a kind of multi-cable uses, and belong to current transformer arrangement technology
Field.
Background technique
In large iron and steel enterprise, the power supply system of 35KV electric furnace needs to configure large-scale transformer, and transformer capacity is
90000KVA, capacity is especially big, the power cabinet installation site distance field of transformer farther out, using being 300 squares of 35KV single
Cable, amount to 9, to live furnace transformer power supply.It is required according to zero-sequenceprotection, needs special zero sequence transformer
Zero-sequence current is acquired, but since existing market is not suitble to the large-scale zero sequence transformer of 9 cables, it is therefore desirable to design a kind of reality
With novel big zero sequence transformer to meet this use demand in special circumstances.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of large-scale zero sequence transformer device, this zero-sequence mutual inductances
Device device can carry out zero-sequence current acquisition to more large-sized cables simultaneously, meet zero-sequenceprotection requirement and site space requirement.
The technical solution for solving above-mentioned technical problem is:
A kind of large size zero sequence transformer device, it is made of iron core and coil, and iron core uses crystal grain directional cold-rolling silicon steel disc,
Iron core is rectangle frame structure, and iron core uses four frame pillar full reclining seam constructions, and with glass adhesion belt binding, coil according to
120/5 no-load voltage ratio is wound on iron core top, place inside iron core frameworks 9, the cable of 300 squares of 35KV single of normal laying with
On.
Above-mentioned large size zero sequence transformer device, the top and bottom two sides of the iron core have channel steel clamping respectively, clamp spiral shell
Bolt passes through the channel steel of two sides by nut check, has pillar support between the channel steel of every side top and bottom, pillar is located at iron core
The frame two sides at both ends, the top and bottom of pillar have screw thread to be fixedly connected with channel steel by fastening nut respectively.
Above-mentioned large size zero sequence transformer device, the length of the rectangular frame of the iron core is 400-450mm, is highly
300-350mm。
The beneficial effects of the utility model are:
The zero sequence transformer device of the utility model uses rectangular frame structure, and the two sides of frame are respectively by channel steel and branch
Column support, can be enhanced whole stability；Iron core frameworks inner space increases, and can place the cable of normal laying simultaneously
9 or more, meet the requirement of disposable acquisition multi-cable zero-sequence current.
The utility model structure is simple, it is easy to use, be easy to make, zero sequences electricity can be carried out to more large-sized cables simultaneously
Stream acquisition, meets zero-sequenceprotection requirement, and can reduce live space occupied, improves the management level of standardization.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
It is marked in figure as follows: iron core 1, coil 2, channel steel 3, fishbolt 4, nut 5, pillar 6, fastening nut 7.
Specific embodiment
The utility model is made of iron core 1, coil 2, channel steel 3, fishbolt 4, nut 5, pillar 6, fastening nut 7.
It is shown in figure, iron core 1 uses crystal grain directional cold-rolling silicon steel disc, and iron core 1 is rectangle frame structure, the length of iron core 1
The length of square frame is 400-450mm, is highly 300-350mm.1 frame interior space of iron core increases, and can place simultaneously
9, cable or more of 300 squares of 35KV single of normal laying meet the requirement of disposable acquisition multi-cable zero-sequence current.
It is shown in figure, iron core 1 uses four frame pillar full reclining seam constructions, and with glass adhesion belt binding, to reduce iron core 1
Added losses.
It is shown in figure, there are the clamping of channel steel 3 in the top and bottom two sides of iron core 1 respectively, and fishbolt 4 passes through the channel steel of two sides
3 are locked by nut 5, have the support of pillar 6 between the channel steel 3 of every side top and bottom, whole stability can be enhanced.
It is shown in figure, pillar 6 is located at the frame two sides at 1 both ends of iron core, and pillar 6 uses round steel, the top and bottom of pillar 6
There is screw thread to be fixedly connected with channel steel 3 by fastening nut 7 respectively.
It shows in figure, is existed after measured in the top wound around coil 2 of iron core 1 according to 35KV power supply system capacitance current value
100A or so, 35KV are isolated neutral systems, therefore the high sensitivity of precision and no-load voltage ratio is not needed to zero sequence transformer, according to
120/5 no-load voltage ratio wound around coil 2 on iron core 1 meets 10VA requirement.
One embodiment of the utility model is as follows:
The length of the rectangular frame of iron core 1 is 400mm, is highly 300mm；
The wound around coil on iron core according to 120/5 no-load voltage ratio of coil 2 meets 10VA requirement；
The specification of channel steel 3 is 6.3；
The diameter of fishbolt 4 is φ 18mm, length 100mm；
The diameter of pillar 6 is φ 28mm, length 240mm；
The diameter of fastening nut 7 is φ 24mm.
Claims (3)
1. a kind of large size zero sequence transformer device, it is made of iron core (1) and coil (2), it is characterised in that: iron core (1) uses
Crystal grain directional cold-rolling silicon steel disc, iron core (1) are rectangle frame structure, and iron core (1) uses four frame pillar full reclining seam constructions,
And with glass adhesion belt binding, coil (2) is wound according to 120/5 no-load voltage ratio on iron core (1) top, and iron core (1) lower portion is placed just
9, cable or more of 300 squares of the 35KV single being often laid with.
2. large size zero sequence transformer device according to claim 1, it is characterised in that: the upper end of the iron core (1) is under
There are channel steel (3) clamping in end two sides respectively, and the channel steel (3) that fishbolt (4) passes through two sides is locked by nut (5), every side upper end
Have pillar (6) support between the channel steel (3) of lower end, pillar (6) is located at the frame two sides at iron core (1) both ends, pillar (6) it is upper
End and lower end have screw thread to be fixedly connected with channel steel (3) by fastening nut (7) respectively.
3. large size zero sequence transformer device according to claim 1, it is characterised in that: the rectangle frame of the iron core (1)
The length of frame is 400-450mm, is highly 300-350mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920437108.5U CN209515405U (en) | 2019-04-02 | 2019-04-02 | A kind of large size zero sequence transformer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920437108.5U CN209515405U (en) | 2019-04-02 | 2019-04-02 | A kind of large size zero sequence transformer device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209515405U true CN209515405U (en) | 2019-10-18 |
Family
ID=68188240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920437108.5U Active CN209515405U (en) | 2019-04-02 | 2019-04-02 | A kind of large size zero sequence transformer device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209515405U (en) |
-
2019
- 2019-04-02 CN CN201920437108.5U patent/CN209515405U/en active Active
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