CN2722420Y - Outdoor vacuum separated switch for low voltage load - Google Patents
Outdoor vacuum separated switch for low voltage load Download PDFInfo
- Publication number
- CN2722420Y CN2722420Y CN 200420076485 CN200420076485U CN2722420Y CN 2722420 Y CN2722420 Y CN 2722420Y CN 200420076485 CN200420076485 CN 200420076485 CN 200420076485 U CN200420076485 U CN 200420076485U CN 2722420 Y CN2722420 Y CN 2722420Y
- Authority
- CN
- China
- Prior art keywords
- insulator
- low voltage
- contact terminal
- back contact
- isolation knife
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000012212 insulator Substances 0.000 claims abstract description 26
- 238000002955 isolation Methods 0.000 claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 230000007723 transport mechanism Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000013066 combination product Substances 0.000 description 2
- 229940127555 combination product Drugs 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 206010025482 malaise Diseases 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The utility model relates to an outdoor vacuum separated switch for low voltage load in an electric power supply system, which comprises a frame, whrein, three sets of insulators are arranged in parallel on the frame, and each set comprises two insulators which are transversely arranged; in each set, a first insulator is provided with a quick mechanism, and a second insulator is provided with a back contact terminal; the quick mechanism is hinged with an isolation knife assembly, the long arm end of the isolation knife assembly is connected with an insulating pull rod, and the lower end of the insulating pull rod is connected with a crank arm of a main shaft three phase linking mechanism which is arranged on the frame. Especially, in each set, the outer side of the quick mechanism at the upper end is connected with a low voltage vacuum arc extinguishing chamber, and the outer end of the arc extinguishing chamber is provided with an input terminal and a front contact terminal; in each set, the back contact terminal on the second insulator is longer than the front contact terminal; each set is additionally provided with a third insulator which is provided with an output terminal, and the output terminal is connected with the back contact terminal through a fuse. The outdoor vacuum separated switch for low voltage load has powerful ability for closing and opening load current, high reliability, flexible and convenient operation, and the utility model is especially suitable for being used for closing and opening the load current on a distribution circuit in a power distribution system of 0.4 kV alternating current.
Description
(1) technical field: the utility model relates to a kind of device for switching of using in the electric power system, is a kind of outdoor low voltage isolated vacuum load switch that has isolating switch and vacuum load switch function concurrently.
(2) background technology: at present, the product that China's electric power system adopts in the step down side distribution line has following several: 1. 2. low pressure isolating switch and fuse combination product of low pressure isolating switch.Above product mesolow isolating switch can not close and close and cut-off load current and can not protect transformer; Though low pressure isolating switch and fuse combination product can be protected transformer, can not close equally and close and cut-off load current; So the said goods is difficult to satisfy electric power system user's requirement.Existing a kind of high-voltage vacuum load switch on the market, it has branch, combined floodgate performance preferably, but can not protect transformer, and its structural behaviour is unwell to does the use of low-pressure side distribution line.
(3) summary of the invention: the purpose of this utility model is to overcome the problem that above-mentioned prior art exists, and provides a kind of pass to close and to cut-off the load current ability strong, and the reliability height has obviously visible fracture, the outdoor low voltage isolated vacuum load switch of flexible and convenient operation.
Concrete scheme of the present utility model is: with existing high-voltage vacuum load switch is that basic structure is improved, it includes framework, three groups of insulators arranged side by side are housed on framework, two insulators of each component are transversely arranged, in each group, on first insulator quick mechanism is housed, the back contact is housed on second insulator, be hinged with the isolation knife assembly with quick mechanism, be connected with insulated tension pole at isolation knife assembly long arm end, the lower end of insulated tension pole is connected with cranking arm of main shaft three-phase through transport mechanism on being contained in framework, its improvement is: in each group, the outside, upper end of quick mechanism connects is equipped with the low-voltage vacuum arc control device, and input terminal and front contact are equipped with in the outer end of these arc control device; Described each back contact of organizing on second insulator that is contained in is long than front contact; Increasing in every group has the 3rd insulator, dress lead-out terminal on it, and this lead-out terminal is connected with afterwards adopting fuse between the contact.
The utility model has isolating switch and on-load switch function concurrently; close the pass and to cut-off the load current ability strong; the reliability height; transformer had the excellent protection function; has obviously visible fracture; flexible and convenient operation is particularly suitable for exchanging in the 0.4kv distribution system on the distribution line, cut-offs the usefulness of load current as Guan Hehe.
(4) description of drawings:
Fig. 1 is a front view of the present utility model;
Fig. 2 is a vertical view of the present utility model.
Among the figure: 1-front contact, 2-input terminal, 3-low-voltage vacuum arc control device, the 4-quick mechanism, 5-isolation knife assembly, 6-insulated tension pole, contact behind the 7-, 8-fuse, 9-lead-out terminal, 10,11-insulator, 12-framework, 13-centering spring, 14-cranks arm, 15-main shaft, 16-insulator, the 17-handle, the 18-crossbeam.
(5) embodiment:
Referring to Fig. 1, Fig. 2, the utility model adopts steel part to make quadra 12, and the centre is added with crossbeam 18 one, on framework 2, three groups of insulators is housed side by side, and to be that three insulators are transversely arranged (see among the figure: insulator 16,11,10) each component.In each group, quick mechanism 4 (similar substantially to the quick mechanism structure of existing high-voltage vacuum load switch) is installed on first insulator 16, install on second insulator 11 on 7, the three insulators 10 of back contact lead-out terminal 9 is installed.In each group, the outside, the upper end of quick mechanism 4 connects is equipped with low-voltage vacuum arc control device 3 and (selects specified drop-out current 1600A for use, open apart from 4 ± 1mm closing speed 0.15-0.25m/s, opening velocity 0.4-0.5m/s.Input terminal 2 and front contact 1 (arranging at an angle of 90) are equipped with in the outer end of these arc control device; With the also hinged isolation knife assembly 5 that is equipped with of quick mechanism 4, insulated tension pole 6 is equipped with in long arm end (right-hand member) connection at isolation knife assembly 5, this insulated tension pole 6 is driven by one group of main shaft three-phase link gear and connects, main shaft three-phase link gear is identical with structure in the existing high-voltage vacuum load switch, it cranks arm 14 by what a handle that is installed in main shaft 15 on the framework 12, is connected with main shaft 15 17, three were connected with main shaft 15, two centering springs that are connected with main shaft 15 13 are formed, and crank arm 14 to be connected with the lower end of insulated tension pole 6.
In the utility model, described back contact 7 is than front contact 1 long 30mm, so that isolation knife assembly 5 is thrown off poorly if having time mutually with forward and backward contact 1 and 7 in moving process, promptly back contact 7 is than front contact 1 tens ms disconnection when the opening time delay, when closing a floodgate, tens ms close up in advance.Between back contact 7 and lead-out terminal 9, install fuse 8 additional at last and promptly constitute the utility model.
Operation principle of the present utility model is summarized as follows:
Isolation knife 5 constitutes major loop with front contact 1 and back contact 7 as shown in Figure 1, constitutes subsidiary loop with vacuum interrupter 3 and back contact 7.
Interrupting process: at first the isolation knife 5 of major loop is separated with front contact 1 downwards rapidly under the effect of centering spring 13, electric current is transferred to subsidiary loop vacuum interrupter 3 and back contact 7 by major loop, is subjected to the actuating of quick mechanism 4 to cut-off transfer current through tens ms final vacuum arc control device 3.Back contact 7 is owing to than front contact 1 high 30mm, with the isolation knife closure always during this, and after crossing tens ms, back contact 7 separates with isolation knife under the effect of centering spring 13, carries out the no arc of zero load and cut-offs.
Process is closed in the pass: contact 7 is because than front contact 1 high 30mm behind the major loop, so under centering spring 13 effects, isolation knife 5 is at first closed with back contact 7 and is closed, the electric current warp is contact 7 and vacuum interrupter 3 subsidiary loops later, closed by the actuating of quick mechanism 4 through tens ms final vacuum arc control device 3 and close load current.Front contact 1 disconnects with isolation knife always during this, and after crossing tens ms, under the effect of centering spring 13, isolation knife 5 is just closed with front contact 1 and closed, and electric current is transferred to major loop by subsidiary loop.
Isolation knife and forward and backward contact close close after, no matter in normal operation, still by short circuit current the time, vacuum interrupter is only by electric current seldom.
Claims (1)
1. outdoor low voltage isolated vacuum load switch, has framework, three groups of insulators arranged side by side are housed on framework, two insulators of each component are transversely arranged, in each group, on first insulator quick mechanism is housed, the back contact is housed on second insulator, be hinged with the isolation knife assembly with quick mechanism, be connected with insulated tension pole at isolation knife assembly long arm end, the lower end of insulated tension pole is connected with cranking arm of main shaft three-phase through transport mechanism on being contained in framework, it is characterized in that: in each group, the outside, upper end of quick mechanism connects is equipped with the low-voltage vacuum arc control device, and input terminal and front contact are equipped with in the outer end of these arc control device; Described each back contact of organizing on second insulator that is contained in is long than front contact; Increasing in every group has the 3rd insulator, dress lead-out terminal on it, and this lead-out terminal is connected with afterwards adopting fuse between the contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420076485 CN2722420Y (en) | 2004-09-04 | 2004-09-04 | Outdoor vacuum separated switch for low voltage load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420076485 CN2722420Y (en) | 2004-09-04 | 2004-09-04 | Outdoor vacuum separated switch for low voltage load |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2722420Y true CN2722420Y (en) | 2005-08-31 |
Family
ID=35012790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420076485 Expired - Lifetime CN2722420Y (en) | 2004-09-04 | 2004-09-04 | Outdoor vacuum separated switch for low voltage load |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2722420Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486979A (en) * | 2010-12-02 | 2012-06-06 | 河南省电力公司安阳供电公司 | Method and device for reducing temperature of low-voltage isolating switch fuse group of distribution transformer |
| CN106486318A (en) * | 2016-12-07 | 2017-03-08 | 国网宁夏电力公司吴忠供电公司 | A kind of vacuum load switch |
-
2004
- 2004-09-04 CN CN 200420076485 patent/CN2722420Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486979A (en) * | 2010-12-02 | 2012-06-06 | 河南省电力公司安阳供电公司 | Method and device for reducing temperature of low-voltage isolating switch fuse group of distribution transformer |
| CN106486318A (en) * | 2016-12-07 | 2017-03-08 | 国网宁夏电力公司吴忠供电公司 | A kind of vacuum load switch |
| CN106486318B (en) * | 2016-12-07 | 2018-11-23 | 国网宁夏电力公司吴忠供电公司 | A kind of vacuum load switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HUBEI WANG AN SCIENCE AND TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: HE XIAOHONG Effective date: 20100609 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 435002 (WANG AN CO., LTD.), NO.17, YAN AN ROAD, HUANGSHI CITY, HUBEI PROVINCE TO: 435002 NO.98, GUANDI VILLAGE, HUANGSHIGANG DISTRICT, HUANGSHI CITY, HUBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100609 Address after: 435002 Huangshi city of Hubei province Huangshi port Guandi Village No. 98 Patentee after: Hubei Wangan Technology Co., Ltd. Address before: 435002, No. 17, Yanan Road, Huangshi, Hubei Patentee before: He Xiaohong |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140904 Granted publication date: 20050831 |