CN105280365A - General voltage transformer for 10-20kV system - Google Patents
General voltage transformer for 10-20kV system Download PDFInfo
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- CN105280365A CN105280365A CN201510702716.0A CN201510702716A CN105280365A CN 105280365 A CN105280365 A CN 105280365A CN 201510702716 A CN201510702716 A CN 201510702716A CN 105280365 A CN105280365 A CN 105280365A
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- winding
- voltage transformer
- pour mass
- secondary winding
- iron core
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Abstract
The invention discloses a general voltage transformer for a 10-20kV system. The general voltage transformer comprises a primary terminal stud, a casting body, a secondary terminal box, a primary winding, a secondary winding, an iron core and a mounting plate; the primary winding and the secondary winding are suspended in the casting body, the primary winding is sleeved on the external of the secondary winding, and the primary winding is further electrically connected with the primary terminal stud; the secondary winding is wound on the iron core; the lower part of the casting body is provided with the secondary terminal box, and the secondary terminal box is electrically connected with the secondary winding; the bottom of the casting body is fixedly connected with the mounting plate, and a fixed terminal and two movable terminals are arranged in the secondary terminal box. The switchover between 10kV and 20kV can be realized through the changing of the terminal of an access circuit. The voltage transformer has the obvious effects that the direct switchover between 10kV and 20kV is realized without power failure, the voltage transformer is unnecessary to change, and switchover is convenient, safe, and environment-friendly, and the resource is saved.
Description
Technical field
The present invention relates to instrument transformer technical field, specifically, is the universal voltage transformer of a kind of 10-20kV system.
Background technology
China always using 10kV as medium-voltage distribution voltage, have the amount of power supply of 65% 10kV electric pressure of coming to export, but 10kV distribution system capacity is little, loss is large, land seizure amount is large, environmental-protecting performance is poor.But some areas of China relatively stable maturation of 10kV electric power system at present, will quote for entering of 20kV, will utilize original 10kV circuit to greatest extent at present in good time simultaneously.Therefore in China's a large amount of phenomenon of depositing 10kV-20kV and jointly existing at present.
But electric power system directly switches at 10kV and 20kV, or the increase-volume of former 10kV system user to 20kV system time, need to have a power failure, and original instrument transformer to be changed, so not only can cause the waste of resource, and have a power failure and also can cause the loss of user.
Summary of the invention
For the deficiencies in the prior art, the object of this invention is to provide the universal voltage transformer of a kind of 10-20kV system, can realize not having a power failure, not change instrument transformer, directly switch, convenience, safety, environmental protection, saving resource.
For achieving the above object, the technical solution used in the present invention is as follows:
The universal voltage transformer of a kind of 10-20kV system, comprise primary connection bolt, pour mass, secondary terminal box, a winding, secondary winding, iron core, mounting base, its key is: described primary connection bolt is separately fixed at the left and right sides at described pour mass top, the described winding of unsettled installing and secondary winding in this pour mass, a described winding is set in the outside of secondary winding, this winding is also electrically connected with described primary connection bolt, described secondary winding is wound on described iron core, the bottom of described pour mass arranges described secondary terminal box, this secondary terminal box is electrically connected with described secondary winding, the bottom of described pour mass is fixedly connected with described mounting base, a fixed terminals and two movable terminals are provided with in described secondary terminal box, by changing the movable terminals of place in circuit, the switching of 10kV and 20kV can be realized.
This instrument transformer is on designing and producing, require to make according to the class of insulation of 20kV voltage transformer, one time winding designs according to 20kV, because a winding is high-pressure side, the conversion of multivoltage ratio cannot be realized, so a winding immobilizes, when secondary winding designs, by being designed to the wiring construction with 10kV and 20kV two movable terminals, changing the movable terminals of place in circuit when handover is needed, polytropic ratio conversion can be realized, thus realize not having a power failure, do not change instrument transformer, directly switch, convenience, safety, environmental protection, saving resource.
Further, described iron core is rectangle frame structure, and the upper side edge of this iron core is located in a described winding, and described secondary winding is wound on the upper side edge of described iron core.
Adopting said structure, when ensureing that instrument transformer normally works, can raw material be saved, reduce the time spent by operation, accelerate efficiency.
Further, be embedded with an inserts at the top of described pour mass, described primary connection bolt is connected with a described winding electric by this inserts.
The bonding strength of primary connection bolt and pour mass can be strengthened by this inserts, ensure that primary connection bolt can not come off because of external wire and cause the damage of instrument transformer.
Further, the left and right sides bottom described pour mass is equiped with embedding mother respectively, in this embedding mother, be equiped with hold-down screw, and described pour mass is realized and being fixedly connected with of mounting base by this hold-down screw.
The bonding strength between screw and pour mass can be strengthened by embedding mother, thus can ensure that pour mass is fixed on mounting base more reliably.
Further, also earth stud is provided with in the left rear side of described mounting base.
Remarkable result of the present invention is: by carrying out polytropic ratio conversion designs to the secondary winding of low-pressure end, thus achieve the direct switching not having a power failure and carry out between 10kV and 20kV, and do not change instrument transformer, convenience, safety, environmental protection, saving resource.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the winding diagram of this instrument transformer.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention and operation principle are described in further detail.
As shown in Figures 1 and 2, the universal voltage transformer of a kind of 10-20kV system, comprise primary connection bolt 1, pour mass 2, secondary terminal box 3, a winding 4, secondary winding 5, iron core 6, mounting base 7, described primary connection bolt 1 is separately fixed at the left and right sides at described pour mass 2 top, the described winding 3 of unsettled installing and secondary winding 4 in this pour mass 2, a described winding 4 is set in the outside of secondary winding 5, this winding 4 is also electrically connected with described primary connection bolt 1, described secondary winding 5 is wound on described iron core 6, the bottom of described pour mass 2 arranges described secondary terminal box 3, this secondary terminal box 3 is electrically connected with described secondary winding 5, the bottom of described pour mass 2 is fixedly connected with described mounting base 7, a fixed terminals and two movable terminals are provided with in described secondary terminal box 3, by changing the movable terminals of place in circuit, the switching of 10kV and 20kV can be realized.
In this example, described iron core 6 is rectangle frame structure, and the upper side edge of this iron core 6 is located in a described winding 4, and described secondary winding 5 is wound on the upper side edge of described iron core 6.
As can be seen from Figure 1, be embedded with an inserts 8 at the top of described pour mass 2, described primary connection bolt 1 is electrically connected with a described winding 4 by this inserts 8.
It can also be seen that from Fig. 1, the left and right sides bottom described pour mass 2 is equiped with embedding female 9 respectively, is equiped with hold-down screw 10 at this in embedding female 9, and described pour mass 2 is realized and being fixedly connected with of mounting base 7 by this hold-down screw 10.
See accompanying drawing 2, be also provided with earth stud 11 in the left rear side of described mounting base 7.
This instrument transformer is on designing and producing, require to make according to the class of insulation of 20kV voltage transformer, a winding 4 is according to 20kV design, and because of one time, winding 4 is high-pressure sides, cannot realize the conversion of multivoltage ratio, so a winding 4 immobilizes, when secondary winding 5 designs, change the mode of connection when handover is needed and can realize polytropic ratio conversion, winding diagram as shown in Figure 3, A ~ B is two terminals of a winding 4,1a ~ 1b
1~ 1b
2for three terminals of secondary winding 5, and wherein 1a is fixed terminals, 1b
1with 1b
2for movable terminals, when the terminals of secondary winding 5 place in circuit are 1a and 1b1, voltage is 20kV; That voltage is 10kV when the terminals of secondary winding 5 place in circuit are 1a and 1b2.
Therefore, this instrument transformer can realize not having a power failure, do not change instrument transformer directly switches, convenience, safety, environmental protection, saving resource.
Claims (5)
1. the universal voltage transformer of 10-20kV system, comprise primary connection bolt (1), pour mass (2), secondary terminal box (3), a winding (4), secondary winding (5), iron core (6), mounting base (7), it is characterized in that: described primary connection bolt (1) is separately fixed at the left and right sides at described pour mass (2) top, the described winding (4) of unsettled installing and secondary winding (5) in this pour mass (2), a described winding (4) is set in the outside of secondary winding (5), this winding (4) is also electrically connected with described primary connection bolt (1), described secondary winding (5) is wound on described iron core (6), the bottom of described pour mass (2) arranges described secondary terminal box (3), this secondary terminal box (3) is electrically connected with described secondary winding (5), the bottom of described pour mass (2) is fixedly connected with described mounting base (7), a fixed terminals and two movable terminals are provided with in described secondary terminal box (3), by changing the movable terminals of place in circuit, the switching of 10kV and 20kV can be realized.
2. the universal voltage transformer of 10-20kV system according to claim 1, it is characterized in that: described iron core (6) is rectangle frame structure, the upper side edge of this iron core (6) is located in a described winding (4), and described secondary winding (5) is wound on the upper side edge of described iron core (6).
3. the universal voltage transformer of 10-20kV system according to claim 1 and 2, it is characterized in that: be embedded with an inserts (8) at the top of described pour mass (2), described primary connection bolt (1) is electrically connected with a described winding (4) by this inserts (8).
4. the universal voltage transformer of 10-20kV system according to claim 1 or 3, it is characterized in that: be equiped with embedding mother (9) respectively in the left and right sides of described pour mass (2) bottom, in this embedding mother (9), be equiped with hold-down screw (10), described pour mass (2) is realized and being fixedly connected with of mounting base (7) by this hold-down screw (10).
5. the universal voltage transformer of 10-20kV system according to claim 1, is characterized in that: be also provided with earth stud (11) in the left rear side of described mounting base (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510702716.0A CN105280365A (en) | 2015-10-26 | 2015-10-26 | General voltage transformer for 10-20kV system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510702716.0A CN105280365A (en) | 2015-10-26 | 2015-10-26 | General voltage transformer for 10-20kV system |
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| Publication Number | Publication Date |
|---|---|
| CN105280365A true CN105280365A (en) | 2016-01-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510702716.0A Pending CN105280365A (en) | 2015-10-26 | 2015-10-26 | General voltage transformer for 10-20kV system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111403141A (en) * | 2020-03-29 | 2020-07-10 | 雷兹互感器（上海）有限公司 | Voltage transformer with high IP protection level for gas insulated high-voltage switch cabinet |
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| US20050045166A1 (en) * | 2003-08-27 | 2005-03-03 | Mitsubishi Denki Kabushiki Kaisha | Ignition coil apparatus for internal combustion engine |
| CN201490001U (en) * | 2009-08-21 | 2010-05-26 | 四川金成铭电器有限责任公司 | Combined metering mutual inductor with multi-transformation ratio |
| CN202585084U (en) * | 2012-04-17 | 2012-12-05 | 湖北大二互科技有限公司 | Novel 20KV low-magnetic flux combined voltage transformer |
| CN202695119U (en) * | 2012-07-31 | 2013-01-23 | 上海一互电器有限公司 | Current transformer with sensor |
| CN202758734U (en) * | 2012-08-29 | 2013-02-27 | 湖南大北互互感器有限公司 | Single-winding current transformer for metering and measuring |
| CN202758730U (en) * | 2012-08-29 | 2013-02-27 | 湖南大北互互感器有限公司 | Indoor single-phase large-capacity electromagnetic voltage transformer |
| CN202996565U (en) * | 2012-12-17 | 2013-06-12 | 杭州大互互感器有限公司 | 10KV-20KV voltage transformer |
| CN205211580U (en) * | 2015-10-26 | 2016-05-04 | 常州欧瑞电气有限公司 | General type voltage transformer of 10 -20kV system |
-
2015
- 2015-10-26 CN CN201510702716.0A patent/CN105280365A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050045166A1 (en) * | 2003-08-27 | 2005-03-03 | Mitsubishi Denki Kabushiki Kaisha | Ignition coil apparatus for internal combustion engine |
| CN201490001U (en) * | 2009-08-21 | 2010-05-26 | 四川金成铭电器有限责任公司 | Combined metering mutual inductor with multi-transformation ratio |
| CN202585084U (en) * | 2012-04-17 | 2012-12-05 | 湖北大二互科技有限公司 | Novel 20KV low-magnetic flux combined voltage transformer |
| CN202695119U (en) * | 2012-07-31 | 2013-01-23 | 上海一互电器有限公司 | Current transformer with sensor |
| CN202758734U (en) * | 2012-08-29 | 2013-02-27 | 湖南大北互互感器有限公司 | Single-winding current transformer for metering and measuring |
| CN202758730U (en) * | 2012-08-29 | 2013-02-27 | 湖南大北互互感器有限公司 | Indoor single-phase large-capacity electromagnetic voltage transformer |
| CN202996565U (en) * | 2012-12-17 | 2013-06-12 | 杭州大互互感器有限公司 | 10KV-20KV voltage transformer |
| CN205211580U (en) * | 2015-10-26 | 2016-05-04 | 常州欧瑞电气有限公司 | General type voltage transformer of 10 -20kV system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111403141A (en) * | 2020-03-29 | 2020-07-10 | 雷兹互感器（上海）有限公司 | Voltage transformer with high IP protection level for gas insulated high-voltage switch cabinet |
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| CB02 | Change of applicant information |
Address after: No. 502, Changting Road, Wujin Economic Development Zone, Jiangsu, Changzhou Applicant after: Changzhou Orient Electric Co., Ltd. Address before: No. 502, Changting Road, Wujin Economic Development Zone, Jiangsu, Changzhou Applicant before: ORIENT ELECTRIC CO., LTD. |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160127 |
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| RJ01 | Rejection of invention patent application after publication |