CN203746652U - Three-phase busbar type zero sequence current transformer - Google Patents
Three-phase busbar type zero sequence current transformer Download PDFInfo
- Publication number
- CN203746652U CN203746652U CN201420093379.0U CN201420093379U CN203746652U CN 203746652 U CN203746652 U CN 203746652U CN 201420093379 U CN201420093379 U CN 201420093379U CN 203746652 U CN203746652 U CN 203746652U
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- Prior art keywords
- bus
- insulation
- bar
- triple
- secondary winding
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- Expired - Lifetime
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- 238000004804 winding Methods 0.000 claims abstract description 33
- 238000009413 insulation Methods 0.000 claims description 82
- 230000004888 barrier function Effects 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 4
- 238000010079 rubber tapping Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000009434 installation 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
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Abstract
The utility model discloses a three-phase busbar type zero sequence current transformer. The three-phase busbar type zero sequence current transformer comprises a base. The base comprises a pair of first insulating plates and a pair of insulating connecting plates, wherein the first insulating plates are vertically arranged, and the insulating connecting plates are arranged left and right. A first iron-core coil and a second iron-core coil are arranged in the base. Primary windings are arranged on the first iron-core coil and the second iron-core coil in a winding mode, the first iron-core coil and the second iron-core coil are further provided with a first independent secondary winding and a second independent secondary winding in a winding mode respectively, the first windings are connected with a first bus, a second bus and a third bus, the first bus, the second bus and the third bus are arranged at one end of the base, the first secondary winding and the second secondary winding are connected with a secondary winding connecting terminal arranged on the base, the first bus, the second bus and the third bus form a structure shaped like a Chinese character 'shan', the outer side of the first bus, the outer side of the second bus and the outer side of the third bus are respectively provided with a fourth insulating plate, and the outer side of the first bus and the outer side of the second bus are respectively provided with a third insulating plate. Compared with a similar product, the three-phase busbar type zero sequence current transformer has the advantage of being better in insulating effect.
Description
Technical field
The utility model relates to instrument transformer technical field, more particularly, and particularly a kind of three-phase bus bar formula zero sequence current mutual inductor.
Background technology
Zero sequence current mutual inductor is the part of primary current monitoring and zero-sequence current protection in electric power system.The patent No. is that 201110159496.3 patent of invention discloses a kind of totally-enclosed zero-sequence transformer, but the structural insulation poor-performing of this instrument transformer easily lost efficacy after using for a long time.Therefore, be necessary to design a kind of three-phase bus bar formula zero sequence current mutual inductor of new structure.
Utility model content
The purpose of this utility model is to provide a kind of three-phase bus bar formula zero sequence current mutual inductor of good insulating effect.
In order to solve problem set forth above, the technical solution adopted in the utility model is: a kind of three-phase bus bar formula zero sequence current mutual inductor, comprise base, described base comprises that the insulation connecting plate that a pair of the first insulation board setting up and down and a pair of left and right arrange forms, in described base, be provided with the first ironcore choke and the second ironcore choke, on described the first ironcore choke and the second ironcore choke, be arranged with one time winding, on described the first ironcore choke and the second ironcore choke, be also independently arranged with the first secondary winding and the second secondary winding, a described winding and the first bus that is arranged on base one end, the second bus is connected with triple bus-bar, described the first secondary winding is connected with the secondary winding binding post being arranged on base with the second secondary winding, described the first bus, the second bus and triple bus-bar form " mountain " character form structure, described triple bus-bar is arranged on middle part, described the first bus and the second bus are arranged on the both sides of triple bus-bar, described the first bus, the outside of the second bus and triple bus-bar is equipped with the 4th insulation board, the outside of described the first bus and the second bus is also provided with the 3rd insulation board, described the first bus, the second bus is connected with the fixed connection apparatus being located in the 3rd insulation board by the 3rd insulation board with triple bus-bar.
According to a preferred embodiment of the present utility model: described fixed connection apparatus comprises first group of insulation hexagon-headed bolt device and second group of insulation hexagon-headed bolt device, described first group of insulation hexagon-headed bolt device comprises the first insulation hexagon-headed bolt, the first insulation hex nut and the first insulating washer, and described second group of insulation hexagon-headed bolt device comprises the second insulation hexagon-headed bolt, the second insulation hex nut and the second insulating washer.
According to a preferred embodiment of the present utility model: the quantity of described the first bus, the second bus and triple bus-bar is two, wherein two triple bus-bars are arranged on middle part, first bus and second bus are arranged on a side of triple bus-bar, another first bus and another second bus are arranged on the opposite side of triple bus-bar, and are being equipped with insulating barrier between two triple bus-bars and between the first adjacent bus and the second bus.
According to a preferred embodiment of the present utility model: be also provided with the second insulation board on described the first insulation board, described secondary winding binding post is arranged on the second insulation board.
According to a preferred embodiment of the present utility model: described two the first insulation boards are connected with hex nut by hexagon-headed bolt, packing ring, spring washer, described two connecting plates that insulate are all fixed on the first insulation board by tapping screw.
Compared with prior art, the beneficial effects of the utility model are: the utility model is arranged to dismountable insulation system by base on the one hand, installation unshakable in one's determination and insulating properties are facilitated, the double hyer insulation pattern of the 3rd insulation board and the 4th insulation board is set on the other hand between bus, further improve the insulating properties of instrument transformer, extended greatly the useful life of instrument transformer.
Brief description of the drawings
Fig. 1 is the front view of three-phase bus bar formula zero sequence current mutual inductor of the present utility model.
Fig. 2 is the vertical view of three-phase bus bar formula zero sequence current mutual inductor of the present utility model.
Fig. 3 is the end view of three-phase bus bar formula zero sequence current mutual inductor of the present utility model.
Fig. 4 is the elementary diagram of three-phase bus bar formula zero sequence current mutual inductor of the present utility model.
Description of reference numerals: 1, base, 2, tapping screw, 3, the first insulation board, 4, insulation connecting plate, 5, the second insulation board, 6, hexagon-headed bolt, 7, packing ring, 8, spring washer, 9, hex nut, 10, the first bus, 11, the second bus, 12, triple bus-bar, 13, the first insulation hexagon-headed bolt, 14, the first insulation hex nut, 15, the first insulating washer, 16, the second insulation hexagon-headed bolt, 17, the second insulation hex nut, 18, the second insulating washer, 19, the 3rd insulation board, 20, insulating barrier, 21, the 4th insulation board, 22, the first ironcore choke, 22, the second ironcore choke.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but execution mode of the present utility model is not limited to this.
Consult shown in Fig. 1～Fig. 4, the utility model provides a kind of three-phase bus bar formula zero sequence current mutual inductor, comprise base 1, described base 1 comprises that the insulation connecting plate 4 that a pair of the first insulation board 3 setting up and down and a pair of left and right arrange forms, in described base 1, be provided with the first ironcore choke 21 and the second ironcore choke 22, on described the first ironcore choke 21 and the second ironcore choke 22, be arranged with winding one time, on described the first ironcore choke 21 and the second ironcore choke 22, be also independently arranged with the first secondary winding and the second secondary winding, a described winding and the first bus 10 that is arranged on base 1 one end, the second bus 11 is connected with triple bus-bar 12, described the first secondary winding is connected with the secondary winding binding post being arranged on base 1 with the second secondary winding, described the first bus 10, the second bus 11 and triple bus-bar 12 form " mountain " character form structure, described triple bus-bar 12 is arranged on middle part, described the first bus 10 and the second bus 11 are arranged on the both sides of triple bus-bar 12, described the first bus 10, the outside of the second bus 11 and triple bus-bar 12 is equipped with the 4th insulation board 21, the outside of described the first bus 10 and the second bus 11 is also provided with the 3rd insulation board 19, described the first bus 10, the second bus 11 is connected with the fixed connection apparatus being located in the 3rd insulation board 19 by the 3rd insulation board 19 with triple bus-bar 12.
In the utility model, the first insulation board 3 is specially with the mounting structure of insulation connecting plate 4: two the first insulation boards 3 are connected by hexagon-headed bolt 6, packing ring 7, spring washer 8 and hex nut 9, and described two insulation connecting plates 4 are all fixed on the first insulation board 3 by tapping screw 2.
Fixed connection apparatus in the utility model comprises first group of insulation hexagon-headed bolt device and second group of insulation hexagon-headed bolt device, described first group of insulation hexagon-headed bolt device comprises the first insulation hexagon-headed bolt 13, the first insulation hex nut 14 and the first insulating washer 15, and described second group of insulation hexagon-headed bolt device comprises the second insulation hexagon-headed bolt 16, the second insulation hex nut 17 and the second insulating washer 18.
Concrete, in the utility model, the quantity of described the first bus 10, the second bus 11 and triple bus-bar 12 is two, wherein two triple bus-bars 12 are arranged on middle part, first bus 10 and second bus 11 are arranged on a side of triple bus-bar 12, another the first bus 10 and another second bus 11 are arranged on the opposite side of triple bus-bar 12, and are being equipped with insulating barrier 20 between two triple bus-bars 12 and between the first adjacent bus 10 and the second bus 11.
In order further to improve insulation property, on described the first insulation board 3, be also provided with the second insulation board 5, described secondary winding binding post (the namely 1S1 shown in figure, 2S1 and 2S2) is arranged on the second insulation board 5.
The utility model has the advantage of: 1, dismountable insulation system is arranged to in 1, the end, the namely structure of the first insulation board 3 and insulation connecting plate 4, installation unshakable in one's determination and insulating properties are facilitated, 2, the double hyer insulation pattern of the 3rd insulation board 19 and the 4th insulation board 21 is set between three buses, further improve the insulating properties of instrument transformer, extended greatly the useful life of instrument transformer; 3, be provided with insulating barrier 20, further improved the insulating properties of instrument transformer.
Above-described embodiment is preferably execution mode of the utility model; but execution mode of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection range of the present utility model.
Claims (5)
1. a three-phase bus bar formula zero sequence current mutual inductor, it is characterized in that: comprise base (1), described base (1) comprises that the insulation connecting plate (4) that a pair of the first insulation board (3) setting up and down and a pair of left and right arrange forms, in described base (1), be provided with the first ironcore choke (21) and the second ironcore choke (22), on described the first ironcore choke (21) and the second ironcore choke (22), be arranged with winding one time, on described the first ironcore choke (21) and the second ironcore choke (22), be also independently arranged with the first secondary winding and the second secondary winding, a described winding and the first bus (10) that is arranged on base (1) one end, the second bus (11) is connected with triple bus-bar (12), described the first secondary winding is connected with the secondary winding binding post being arranged on base (1) with the second secondary winding, described the first bus (10), the second bus (11) and triple bus-bar (12) form " mountain " character form structure, described triple bus-bar (12) is arranged on middle part, described the first bus (10) and the second bus (11) are arranged on the both sides of triple bus-bar (12), described the first bus (10), the outside of the second bus (11) and triple bus-bar (12) is equipped with the 4th insulation board (21), the outside of described the first bus (10) and the second bus (11) is also provided with the 3rd insulation board (19), described the first bus (10), the second bus (11) is connected with the fixed connection apparatus being located in the 3rd insulation board (19) by the 3rd insulation board (19) with triple bus-bar (12).
2. three-phase bus bar formula zero sequence current mutual inductor according to claim 1, it is characterized in that: described fixed connection apparatus comprises first group of insulation hexagon-headed bolt device and second group of insulation hexagon-headed bolt device, described first group of insulation hexagon-headed bolt device comprises the first insulation hexagon-headed bolt (13), the first insulation hex nut (14) and the first insulating washer (15), and described second group of insulation hexagon-headed bolt device comprises the second insulation hexagon-headed bolt (16), the second insulation hex nut (17) and the second insulating washer (18).
3. three-phase bus bar formula zero sequence current mutual inductor according to claim 1, it is characterized in that: described the first bus (10), the quantity of the second bus (11) and triple bus-bar (12) is two, wherein two triple bus-bars (12) are arranged on middle part, first bus (10) and second bus (11) are arranged on a side of triple bus-bar (12), another first bus (10) and another the second bus (11) are arranged on the opposite side of triple bus-bar (12), and be equipped with insulating barrier (20) between two triple bus-bars (12) and between adjacent the first bus (10) and the second bus (11).
4. three-phase bus bar formula zero sequence current mutual inductor according to claim 1, is characterized in that: on described the first insulation board (3), be also provided with the second insulation board (5), described secondary winding binding post is arranged on the second insulation board (5).
5. three-phase bus bar formula zero sequence current mutual inductor according to claim 1, it is characterized in that: described two the first insulation boards (3) are connected with hex nut (9) by hexagon-headed bolt (6), packing ring (7), spring washer (8), described two insulation connecting plates (4) are all fixed on the first insulation board (3) by tapping screw (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420093379.0U CN203746652U (en) | 2014-03-03 | 2014-03-03 | Three-phase busbar type zero sequence current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420093379.0U CN203746652U (en) | 2014-03-03 | 2014-03-03 | Three-phase busbar type zero sequence current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203746652U true CN203746652U (en) | 2014-07-30 |
Family
ID=51346421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420093379.0U Expired - Lifetime CN203746652U (en) | 2014-03-03 | 2014-03-03 | Three-phase busbar type zero sequence current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203746652U (en) |
-
2014
- 2014-03-03 CN CN201420093379.0U patent/CN203746652U/en not_active Expired - Lifetime
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140730 |