CN1514452A - Isolation type current mutual inductor - Google Patents
Isolation type current mutual inductor Download PDFInfo
- Publication number
- CN1514452A CN1514452A CNA2003101018343A CN200310101834A CN1514452A CN 1514452 A CN1514452 A CN 1514452A CN A2003101018343 A CNA2003101018343 A CN A2003101018343A CN 200310101834 A CN200310101834 A CN 200310101834A CN 1514452 A CN1514452 A CN 1514452A
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- current transformer
- carrying platform
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- supporting members
- pair
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- 238000002955 isolation Methods 0.000 title description 19
- 239000012212 insulator Substances 0.000 claims abstract description 31
- 238000004804 winding Methods 0.000 claims abstract description 9
- 230000033001 locomotion Effects 0.000 claims description 6
- 230000003028 elevating effect Effects 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 claims description 2
- 230000009467 reduction Effects 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 claims description 2
- 230000003068 static effect Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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Abstract
The transformer consists of a current transformer and a bracket including two spaced support members. Static contact possessing a wire clip of device is on top of post insulator, which is fixed on up part of support member. The current transformer is fixed on a loadbearing platform located between two support members. The loadbearing platform can move up/down and rotate relative to the two support members. A pair of moving contact is setup at two ends of coil out of primary winding at top part of the current transformer. Drive unit at the bracket drives the loadbearing platform to move up/down or rotate in certain region of angle relative to the bracket, making the pair of moving contact connect to or separate from the pair of static contact. Thus, one invented device can replace two devices of isolated knife switch and current transformer. The compact structure of invented device reduces occupation of land utilized by transformer substation as well as manufacturing cost.
Description
Technical field:
The present invention relates to a kind of Insulating type current transformer, have the dual-use function of current transformer and isolation switch.
Background technology:
The typical layout of existing transformer station is that inlet wire is received current transformer by isolation switch, receives circuit breaker by current transformer again.The effect of current transformer is the electric current that flows through in the measurement circuitry, is used for metering and relaying protection.Isolation switch is a kind of High-Voltage Electrical Appliances with visible cut-off point, and circuit breaker draws back isolation switch after disconnecting, and can see that circuit cuts off the power supply, and guarantee that circuit no longer includes.The sort of isolation switch (two pillars, three pillar type etc.) all needs certain isolation distance, adds position that current transformer is shared and line between the two, often needs two intervals, needs bigger floor space.Take up an area of for reduce as far as possible, reduce equipment manufacturing cost, the spy develops Insulating type current transformer of the present invention.
Summary of the invention:
Purpose of the present invention; aim to provide a kind of Insulating type current transformer, it has the dual-use function of current transformer and isolation switch, can be used for current measurement and relaying protection; can realize the function of isolation switch by the upper and lower motion or the flip-flop movement of current transformer again.
According to Insulating type current transformer provided by the invention, comprise a current transformer and a support, its medium-height trestle comprises two supporting members that separate each other; Described two supporting members top is fixed a post insulator respectively, and each post insulator top has the fixed contact of a carrying device wire clamp; Described current transformer is fixed on the carrying platform, and this carrying platform adjustable shelf is located between described two supporting members, can move up and down or rotates relative to described two supporting members; Winding two leading-out terminals in described current transformer top are provided with a pair of moving contact; Described support is provided with a drive unit, drive described carrying platform and produce elevating movement or in the certain angle scope, rotate, make a pair of fixed contact contact on a pair of moving contact and two post insulators on the described current transformer or separate relative to described support.
In a kind of alternative, this Insulating type current transformer, comprise a current transformer and a support, its medium-height trestle comprises two supporting members that separate each other, a supporting member upper fixed one post insulator wherein, described post insulator top has the fixed contact of a carrying device wire clamp, fixes a circuit breaker on another supporting member, and described circuit breaker is provided with fixed contact that is electrically connected with one end fracture and the device clamp that is electrically connected with its other end fracture; Described current transformer is fixed on the carrying platform, and this carrying platform adjustable shelf is located between described two supporting members, can move up and down or rotates relative to described two supporting members; Winding two leading-out terminals in described current transformer top are provided with a pair of moving contact; Described support is provided with a drive unit, drive described carrying platform and produce elevating movement or in the certain angle scope, rotate, make the fixed contact contact on described fixed contact and the described circuit breaker on a pair of moving contact and the described post insulator on the described current transformer or separate relative to described support.
Above-mentioned Insulating type current transformer mode of operation is as follows: when normally moving, circuit breaker is in closing position, current transformer driven device in the Insulating type current transformer is urged to upper or the upright position, a pair of fixed contact on a pair of moving contact of a current transformer top winding two leading-out terminal settings and described two post insulators or a described post insulator and the described circuit breaker is in contact condition, make the corresponding inlet wire of transformer station be in channel status, current transformer is realized current measurement and relaying protection function; During power failure, circuit breaker is in and cut-offs the position, the current transformer driven device drives, move downward or flip an angle, make a pair of moving contact of a current transformer top winding two leading-out terminal settings and a pair of fixed contact on described two post insulators or a described post insulator and the described circuit breaker be in released state, until arriving a fixed position, guarantee between the adjacent dynamic/static contact and reach the isolation distance of standard code between the adjacent fixed contact, make two fixed contacts that the distance of current transformer is also reached the standard code requirement simultaneously, thereby realize the function of isolation switch.
The advantage of above-mentioned Insulating type current transformer is: two equipment of isolation switch summation current transformer are replaced with an isolation current transformer, and its structure is very compact, reduces the occupation of land of electric substation greatly and reduces equipment manufacturing cost.
Description of drawings:
Fig. 1 is the front view of an embodiment of the present invention, and wherein Insulating type current transformer is in channel status;
Fig. 2 is same embodiment, and wherein Insulating type current transformer is in off state;
Fig. 3 is the front view of a kind of preferred embodiment of the present invention;
Fig. 3 A is the front view of the another kind of preferred embodiment of the present invention;
Fig. 4 is the front view of another preferred embodiment of the present invention, and wherein Insulating type current transformer is in channel status;
Fig. 5 is that A among Fig. 4 is to partial view;
Fig. 6 is a left view embodiment illustrated in fig. 4, and wherein Insulating type current transformer is in off state;
Fig. 7 is the front view of another preferred embodiment of the present invention.
Embodiment:
Below in conjunction with above-mentioned each accompanying drawing, describe the present invention in detail.
Referring to Fig. 1 and 2, a kind of shown in it according to Insulating type current transformer embodiment of the present invention, comprise a dry-type current transformer 1 and a support 2, its medium-height trestle 2 has two supporting members that separate each other 21,22, and its lower end is linked together by a base.Described two supporting members 21,22 tops are fixed a post insulator 3 respectively, can adopt organic insulation post insulator or porcelain insulator, and the top of each post insulator 3 has the fixed contact 9 of a carrying device wire clamp.Described current transformer 1 is fixed on the carrying platform 4, these carrying platform 4 two ends are respectively equipped with two slide blocks that vertically equidistantly separate 11, be respectively equipped with the guide rail 10 that vertically extends that cooperates with described slide block 11 on described two supporting members 21,22, allow described carrying platform 4 relative two supporting members 21,22 vertically to move up and down.Winding two leading-out terminals in described current transformer 1 top respectively are provided with a moving contact 8.The base of described support 2 is provided with a hydraulic cylinder 5, it is positioned under the described carrying platform 4, its piston rod upper end and described carrying platform 4 bottom-hinged are together, piston in hydraulic cylinder 5 is driven by pressure oil, make piston rod move up to the stroke end, the current transformer 1 that is fixed on the carrying platform 4 just is in a high position shown in Figure 1, and a pair of moving contact 8 of 1 liang of leading-out terminal of current transformer just contacts with a pair of fixed contact 9 on two post insulators 3, makes equipment be in channel status; And the piston in hydraulic cylinder 5 is driven by pressure oil, when piston rod is moved downward, above-mentioned moving contact 8 just separates with fixed contact 9, when treating that piston rod is finished retraction stroke, instrument transformer 1 just drops to low level shown in Figure 2, guarantee between the adjacent dynamic/static contact and reach the isolation distance of standard code between the adjacent fixed contact, make two fixed contacts that the distance of current transformer is also reached the distance of standard code simultaneously, thereby realize the function of isolation switch.Can know and see that electric current is disconnected.
Referring to Fig. 1 and 2, wherein label 7 expressions are arranged on the portable load-bearing supporting plate 7 of the with locking mechanism of two supporting members, 21,22 inboards, it can be made with the section bar of angle steel and so on, removably links together with bolt and two supporting members 21,22 of being with alignment pin.Can process the chute (not shown) of the along continuous straight runs extension that cooperates with the bolt alignment pin on two supporting members, 21,22 risers.When current transformer 1 is in shown in Figure 1ly when high-order by Driven by Hydraulic Cylinder, portable load-bearing supporting plate 7 is moved to carrying platform 4 belows, and will be with the locked with bolts of alignment pin on two supporting members 21,22 with nut.After the hydraulic cylinder pressure release, carrying platform 4 toilet seats lean against on the portable load-bearing supporting plate 7.In the time need current transformer 1 being urged to low level shown in Figure 2 with hydraulic cylinder, primer fluid pressing system at first, the weight that makes hydraulic cylinder bear carrying platform 4, remove load-bearing supporting plate 7 after, hydraulic cylinder enters descending stroke.
Referring to Fig. 1, the device clamp that one of two supporting members 22 tops are equipped with on the fixed contact 9 of one of a ground connection disconnecting link 41, two post insulators 3 top correspondence is provided with the grounding contact 42 that cooperates with described ground connection disconnecting link 41.After the effect of ground connection disconnecting link 41 was outage, when current transformer 1 was fallen, the ground connection disconnecting link upwards changeed, and contacts with post insulator 3 end devices wire clamps, makes device clamp ground connection, prevents unexpected incoming call, jeopardizes maintainer's safety.Before sending electricity, the ground connection disconnecting link changes downwards, makes device clamp break away from ground connection.
Referring to Fig. 2, one of two supporting members 21 tops are provided with a ground contact 43, when described carrying platform 4 drops to low level, one of a pair of moving contact 8 on the described current transformer 1 contacts with described ground contact 43, automatically a winding earth of current transformer, guarantee safety the personnel of secondary loop of mutual inductor work.
Referring to Fig. 3, shown in it according to a kind of preferred embodiment of Insulating type current transformer of the present invention.Be that drive unit 5 comprises cover 53 in a lifting overcoat 55 that is fixed on described support 2 bottoms and the lifting that is slidingly fitted in this lifting overcoat 55 with last embodiment difference.The upper end of cover 53 leans on carrying platform 4 bottom lower surfaces in this lifting, and a screw 54 is fixed in the lower end, and this screw 54 and a leading screw 56 are combined together.The transmission device that leading screw 56 constitutes by worm gear 51 and worm screw is by a motor-driven.The forward or reverse of motor, make leading screw 56 produce forward or reverse, thereby the carrying platform 4 of cover 53, its top and the current transformer 1 that is fixed on the carrying platform 4 rise or descend in the driving lifting, can finish contacting or lock out operation of moving contact 8 and fixed contact 9 equally.Compare with last embodiment, transformer station needn't increase Hydraulic Station, thereby device layout is simpler.
Referring to Fig. 4, shown in it according to another preferred embodiment of Insulating type current transformer of the present invention.Different with the foregoing description is, described two supporting members 21 and 22 are a hollow cylinder, its lower end and a base 14 are fixed into one, a pair of worm shaft 52 is housed in the base 14 rotationally, 52 ', each worm shaft 52 or 52 ' end worm gear 51 or 51 ' engagement corresponding with one, the other end links together by the overhanging axle head of a shaft coupling and a pair of shaft extension motor 15.Described worm gear 51 or 51 ' driving one be arranged on the leading screw 56 or 56 that vertically extends in described supporting member 21 or 22 ', described leading screw 56 or 56 ' with a screw 54 or 54 ' cooperate, described screw 54 or 54 ' on be formed with one stretch into the convex extension part 541 or 541 that is arranged between the described carrying platform a pair of slide block 11 4 two ends, that separate up and down '.Stretch the just commentaries on classics or the counter-rotating of motor 15 by described twin shaft, just can drive two leading screws 56 and 56 ' just change synchronously or reverse, thereby drive two screws 54 and 54 ', and then drive the synchronous rising or the decline of described carrying platform 4, finish contacting or lock out operation of moving contact 8 and fixed contact 9.
Referring to Fig. 4 to 6, the another kind of preferred embodiment of Insulating type current transformer of the present invention shown in it, different with preceding two kinds of embodiment is, described carrying platform 4 two ends are fixed with and are erected at described two supporting members 21 rotationally, a pair of coaxial pivot 12 between 22, the mode that employing is rotated described carrying platform 4 within the specific limits realizes the contact or the separation of described dynamic/static contact.The pivot 12 that is supported by left side supporting member 21 among Fig. 4, the transmission device that constitutes by worm gear 51 and worm screw 52 by a motor-driven, makes carrying platform 4 and the current transformer 1 fixed on it rotates in 90 ° of scopes.Fig. 5 has schematically illustrated this worm gearing (for clarity sake, the remainder of Insulating type current transformer is omitted).When carrying platform 4 and when fixing current transformer 1 on it and being in stand up position shown in Figure 4, a pair of moving contact 8 of its leading-out terminal just contacts with a pair of fixed contact 9 on two post insulators 3, makes equipment be in channel status; And be reversed 90 ° when carrying platform 4 and the current transformer 1 fixed on it, when being in horizontal level shown in Figure 6, above-mentioned moving contact 8 just separates with fixed contact 9, guarantee between the adjacent dynamic/static contact and reach the isolation distance of standard code between the adjacent fixed contact, make two fixed contacts that the distance of current transformer is also reached the distance of standard code simultaneously, thereby realize the function of isolation switch.Need to prove that Fig. 6 mainly schematically illustrates the tilt state of current transformer 1, for clarity sake, the turbine and worm decelerator that drives pivot 12 is omitted.Because 12 need of this pivot rotate in 90 ° of scopes, worm gear 51 shown in Figure 5 has adopted sector structure, with weight reduction, saves material.Its alternative is, adopts a gear reduction, replaces above-mentioned turbine and worm decelerator, also is feasible.
Referring to Fig. 6, on the supporting member 21 of left side, apart from a distance, pivot 12 center, a spacer pin 6 is installed, it cooperates with the location hole that the axial line of relative described pivot 12 on being arranged on described carrying platform 4 corresponding end walls circumferentially is 90 ° of distributions, current transformer 1 is locked in vertical or horizontal level.
As another alternative of above-mentioned convertible Insulating type current transformer, worm and gear speed-reduction apparatus wherein can also be replaced with oscillating motor.
In the above-mentioned convertible Insulating type current transformer, the common centreline of two pivots 12 should be positioned at carrying platform 4 and the center of gravity top of fixing the current transformer 1 on it.If necessary, can consider counterweight block to be set,, reduce the load of drive unit to increase the stability of device in carrying platform 4 bottoms.
Fig. 7 is the front view of another preferred embodiment of the present invention.Different with Fig. 1 and 2 illustrated embodiment is that one of two post insulators 3 are replaced by a circuit breaker 31.Shown in Insulating type current transformer, comprise a current transformer 1 and a support 2 equally, its medium-height trestle 2 has two supporting members that separate each other 21 equally, 22, a supporting member 21 upper fixed one post insulator 3 wherein, described post insulator 3 tops have the fixed contact 9 of a carrying device wire clamp, (hypomere of circuit breaker is hollow post insulator to be fixed with a circuit breaker 31 on another supporting member 22, in action bars is arranged, epimere is arc control device, i.e. fracture.Because the structure of circuit breaker itself is known, this specification repeats no more), described circuit breaker 31 is provided with the fixed contact 9 that is electrically connected with one end fracture ' and device clamp of being electrically connected with its other end fracture.All the other and Fig. 1 and 2 illustrated embodiment are identical.Piston in hydraulic cylinder 5 is driven by pressure oil, make piston rod move up to the stroke end, the current transformer 1 that is fixed on the carrying platform 4 just is in a high position shown in Figure 7, the a pair of moving contact 8 of 1 liang of leading-out terminal of current transformer just with post insulator 3 and circuit breaker 31 on a pair of fixed contact 9,9 ' contact, make equipment be in channel status; And the piston in hydraulic cylinder 5 is driven by pressure oil, when piston rod is moved downward, above-mentioned a pair of moving contact 8 just with above-mentioned a pair of fixed contact 9,9 ' separate, when treating that piston rod is finished retraction stroke, instrument transformer 1 just drops to low level, guarantee between the adjacent dynamic/static contact and reach the isolation distance of standard code between the adjacent fixed contact, make two fixed contacts that the distance of current transformer is also reached the distance of standard code simultaneously, thereby realize the function of isolation switch.
Obviously, the carrying platform 4 of a kind of preferred embodiment in back also can adopt the type of drive of Fig. 3 and 3A illustrated embodiment, the mounting means and the drive unit mode of Fig. 4-6 illustrated embodiment, is implemented.
The foregoing description and is not a limitation of the present invention only for explanation be convenient to understand the present invention, and protection scope of the present invention should be limited by each claim.
Claims (11)
1, a kind of Insulating type current transformer comprises a current transformer (1), it is characterized in that: be provided with a support (2), comprise two supporting members that separate each other (21,22); Described two supporting members (21,22) top is fixed a post insulator (3) respectively, and each post insulator (3) top has the fixed contact (9) of a carrying device wire clamp; Described current transformer (1) is fixed on the carrying platform (4), and this carrying platform (4) adjustable shelf is located between described two supporting members (21,22), can described relatively two supporting members (21,22) moves up and down or rotates; Winding two leading-out terminals in described current transformer (1) top are provided with a pair of moving contact (8); Described support (2) is provided with a drive unit (5), drive described carrying platform (4) and produce elevating movement or in the certain angle scope, rotate, a pair of moving contact (8) on the described current transformer (1) is contacted with a pair of fixed contact (9) on two post insulators (3) or separate relative to described support (2).
2, Insulating type current transformer as claimed in claim 1, it is characterized in that: described carrying platform (4) two ends are provided with slide block (11), be respectively equipped with the guide rail (10) that vertically extends that cooperates with described slide block (11) on described two supporting members (21,22)
3, Insulating type current transformer as claimed in claim 2 is characterized in that: described drive unit (5) is one to be arranged on the hydraulic cylinder of described carrying platform (4) below, and its piston rod top and described carrying platform (4) bottom-hinged are together.
4, Insulating type current transformer as claimed in claim 2, it is characterized in that: described drive unit (5) comprises a lifting overcoat (55) that is fixed on described support (2) bottom and is slidingly fitted in cover (53) in the interior lifting of described lifting overcoat (55), cover (53) upper end leans on the lower surface of described carrying platform (4) bottom in the described lifting, a screw (54) is fixed in cover (53) lower end in the described lifting, described screw (54) is screwed onto with a leading screw (56), described leading screw (56) is by a worm gearing (51,52), by a motor-driven.
5, Insulating type current transformer as claimed in claim 2, it is characterized in that: described two supporting members (21,22) be a hollow cylinder, its lower end and a base (14) are fixed into one, a pair of worm shaft (52 is housed in the base (14) rotationally, 52 '), worm gear (the 51 or 51 ') engagement that each worm shaft (52 or 52 ') is corresponding with one respectively, and by a pair of shaft extension motor (15) driving rotation synchronously, described worm gear (51 or 51 ') drives a leading screw (56 or 56 ') that vertically extends that is arranged in the described supporting member (21 or 22), described leading screw (56 or 56 ') cooperates with a screw (54 or 54 '), is formed with one on the described screw (54 or 54 ') and stretches into the convex extension part (541 or 541 ') that is arranged between a pair of slide block (11) that described carrying platform (4) two ends separate up and down.
6, Insulating type current transformer as claimed in claim 1 or 2 is characterized in that: described two supporting members (21,22) inboard is provided with the portable load-bearing supporting plate (7) of with locking mechanism.
7, Insulating type current transformer as claimed in claim 1, it is characterized in that: described carrying platform (4) two ends are fixed with and are erected at described two supporting members (21 rotationally, 22) a pair of coaxial pivot (12) between, described two supporting members (21, spacer pin (6) one of 22) is housed, it cooperates with the location hole that the axial line of relative described pivot (12) on being arranged on the corresponding end wall of described carrying platform (4) circumferentially is 90 ° of distributions, and described current transformer (1) is locked in vertical or horizontal level.
8, Insulating type current transformer as claimed in claim 6 is characterized in that: wherein a pivot (12) is by a gear reduction or turbine and worm decelerator (51,52), by a motor-driven.
9, Insulating type current transformer as claimed in claim 2, it is characterized in that: one of two supporting members (22) top is equipped with a ground connection disconnecting link (41), and the fixed contact (9) of the carrying device wire clamp of one of two post insulators (3) top correspondence is provided with the grounding contact (42) that cooperates with described ground connection disconnecting link (41).
10, Insulating type current transformer as claimed in claim 2, it is characterized in that: one of two supporting members (21) top is provided with a ground contact (43), when described carrying platform (4) drops to low level, one of described a pair of moving contact (8) contacts with described ground contact (43).
11, a kind of Insulating type current transformer, comprise a current transformer (1), it is characterized in that: be provided with a support (2), comprise two supporting members that separate each other (21,22), a supporting member (21) upper fixed one post insulator (3) wherein, described post insulator (3) top has the fixed contact (9) of a carrying device wire clamp, another supports on the structure (22) and is fixed with a circuit breaker (31), and described circuit breaker (31) is provided with fixed contact (9 ') that is electrically connected with one end fracture and the device clamp that is electrically connected with its other end fracture; Described current transformer (1) is fixed on the carrying platform (4), and this carrying platform (4) adjustable shelf is located between described two supporting members (21,22), can described relatively two supporting members (21,22) moves up and down or rotates; Winding two leading-out terminals in described current transformer (1) top are provided with a pair of moving contact (8); Described support (2) is provided with a drive unit (5), drive described carrying platform (4) and produce elevating movement or in the certain angle scope, rotate, described fixed contact (9) on a pair of moving contact (8) and the described post insulator (3) on the described current transformer (1) is contacted with fixed contact (9 ') on the described circuit breaker (31) or separate relative to described support (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310101834 CN1248247C (en) | 2003-05-24 | 2003-10-20 | Isolation type current mutual inductor |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN03138311.4 | 2003-05-24 | ||
| CN 03138311 CN1458656A (en) | 2003-05-24 | 2003-05-24 | Isolated current transformer |
| CN 200310101834 CN1248247C (en) | 2003-05-24 | 2003-10-20 | Isolation type current mutual inductor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1514452A true CN1514452A (en) | 2004-07-21 |
| CN1248247C CN1248247C (en) | 2006-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310101834 Expired - Lifetime CN1248247C (en) | 2003-05-24 | 2003-10-20 | Isolation type current mutual inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1248247C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102668003A (en) * | 2011-04-22 | 2012-09-12 | 华为技术有限公司 | Direct current contactor |
| CN110767417A (en) * | 2019-11-13 | 2020-02-07 | 许继集团有限公司 | Single-phase voltage transformer module for power supply and inflatable cabinet |
-
2003
- 2003-10-20 CN CN 200310101834 patent/CN1248247C/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102668003A (en) * | 2011-04-22 | 2012-09-12 | 华为技术有限公司 | Direct current contactor |
| CN110767417A (en) * | 2019-11-13 | 2020-02-07 | 许继集团有限公司 | Single-phase voltage transformer module for power supply and inflatable cabinet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1248247C (en) | 2006-03-29 |
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Assignee: Beijing Tianwei Ruiheng Electric Co.,Ltd. Assignor: Huang Weishu Contract fulfillment period: 2006.8.1 to 2016.8.1 Contract record no.: 2009110000081 Denomination of invention: Isolation type current mutual inductor Granted publication date: 20060329 License type: Exclusive license Record date: 20090511 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2006.8.1 TO 2016.8.1; CHANGE OF CONTRACT Name of requester: BEIJING TIANWEI RUIHENG ELECTRIC CO., LTD. Effective date: 20090511 |
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Owner name: DALIAN BEIRUI ELECTRIC CO., LTD. Free format text: FORMER OWNER: HUANG WEISHU Effective date: 20120129 |
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Effective date of registration: 20120129 Address after: 116222 Pulandian city in Liaoning Province Town Government Street No. 44 Patentee after: Dalian North Rui Electric Co.,Ltd. Address before: 201, room 1, gate 68, building 4, Nanhua garden, Huairou District, Beijing, 101400 Patentee before: Huang Weishu |
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