CN2251794Y - Charging surge arrester for ac contactor - Google Patents
Charging surge arrester for ac contactor Download PDFInfo
- Publication number
- CN2251794Y CN2251794Y CN 95227514 CN95227514U CN2251794Y CN 2251794 Y CN2251794 Y CN 2251794Y CN 95227514 CN95227514 CN 95227514 CN 95227514 U CN95227514 U CN 95227514U CN 2251794 Y CN2251794 Y CN 2251794Y
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- China
- Prior art keywords
- contact
- charging
- contactor
- charging contact
- support
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- Expired - Lifetime
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Abstract
The utility model relates to a charging and surge inhibiting device installed on an AC contactor. The charging and surge inhibiting device comprises a shell 1; a charging contact 2, a support frame 3, an auxiliary contact 4 and a support frame 5 are arranged in the shell 1, and a reaction spring 8 are arranged below the support frame 3; a permanent magnetism system is arranged above the support frames 3 and 5, and current limiting elements 9 are connected in series in a loop with the charging contact 2. When the AC contactor is moved and put in a capacitor, the AC contactor firstly drives the support frames 3 and 5 which are attracted and comboned together by the permanent magnetism system, the charging contact 2 is made to be closed, and instantaneous surge of an electric circuit is inhibited by the charging contact 2 and current limiting elements 9; instantly, the counter force of the reaction spring 8 makes the support frames 3 and 5 separated; after the charging contact 2 is opened, a working contact of the contactor normally operates.
Description
The utility model relates to a kind of A.C. contactor, particularly a kind of A.C. contactor that is used for switch-capacitor.
The switch-capacitor A.C. contactor is used for dropping into and cutting off the power network capacitor, to adjust the power factor of electric power system.Because capacitor drops into the moment of power network and produces powerful surge current i.e. " shoving " in the circuit, its peak value up to the 50-100 of this branch road contactor rated current doubly thereby must be suppressed.Homemade CJ16 of prior art and CJ19 type switch-capacitor A.C. contactor, its structure be, is provided with charging contact and current-limiting resistance on contactor, and the charging contact is connected as a single entity with the contactor working contact, and the contact thickness that charges is greater than working contact thickness.Contactor is when dropping into action, because charging contact and working contact thickness difference, and the contact in advance of charging contact, at this moment circuit moment shoves and then is suppressed through the loop of charging contact and current-limiting resistance formation.The problem that this technical pattern exists is, because the charging contact is connected as a single entity with working contact, thereby the charging contact also is in closure state when the closed operation of contactor working contact, the time length be easy to burn current-limiting resistance, circuit is broken down.
The purpose of this utility model is, provides a kind of charging that is installed on the A.C. contactor to suppress to shove device, to solve the problems referred to above that existing switch-capacitor A.C. contactor exists.
The utility model is achieved in that this device has housing, the charging contact supporting is installed in the housing, the charging contact is installed on the support, the support below is equipped with charging contact reaction spring, auxiliary contact support also is installed in the housing, auxiliary contact is installed on the support, on the charging contact supporting, permanent magnet is installed, yoke is installed on auxiliary contact support, form this device permanent magnet system by permanent magnet and yoke, it is an integral body that this permanent magnet system makes charging contact supporting and auxiliary contact support adhesive, is in series with current limiting element in charging contact loop.Through adopting said structure, be installed on this device on the contactor and the auxiliary contact support of device is connected with the dynamic contact mechanism of contactor working contact.When A.C. contactor puts into operation, along with the contactor energising, the auxiliary contact support of its working contact dynamic contact mechanism action and drive device and charging contact supporting integral body are moved together, at first are the charging contact closure in the course of action, and compressed charge contact reaction spring.At this moment the contact supporting that charges is subjected to the elastic force effect of permanent magnet system to its suction and the reaction spring that repels each other with suction simultaneously.Along with the closure of charging contact, shove promptly flow through charging contact and current limiting element of circuit is suppressed.Continuation action along with contactor, the elastic force that the charging contact supporting is subjected to reaction spring increases, when the elastic force that is subjected to greater than permanent magnet system during to its suction the charging contact supporting separate with auxiliary contact support, thereby the charging contact supporting is resetted, the contact that will charge is opened, finish and suppress the work of shoving, at this moment auxiliary contact and contactor working contact then are in normal closed operating state.
Advantage of the present utility model is, suppress to shove work once finishing, the contactor normal operation input, the charging contact is promptly opened automatically, thereby the charging contact and the working contact that have solved existing switch-capacitor contactor existence are connected as a single entity, contactor when work, the problem that current-limiting resistance is burnt because of the short circuit of charging contact.
The embodiment that provides below in conjunction with accompanying drawing further specifies the utility model.
Fig. 1 is the utility model structural representation front view that is installed on the A.C. contactor.
Fig. 2 is a utility model structural representation end view shown in Figure 1.
According to Fig. 1 and Fig. 2, this device is installed on the A.C. contactor 10.Charging contact 2 and support 3, auxiliary contact 4 and support 5 thereof, support 3 and 5 times positions of support are installed on device case 1 side by side permanent magnet 6 and yoke 7 respectively are housed, making support 3 and support 5 adhesives is an integral body, charging contact reaction spring 3 is housed below support 3, on the fixed contact contact of charging contact 2, be connected with the current limiting element 9 that alloy wire constitutes, alloy wire is open in air, thereby thermal diffusivity is good.Present embodiment has adopted two pairs of auxiliary contacts and A.C. contactor auxiliary contact to combine, and can form the combination in any of often opening with normally closed interlock, has satisfied the needs of user to circuit junction, and need not re-use electric elements such as auxiliary relay.
Claims (3)
1, a kind of charging of A.C. contactor suppresses to shove device, it is characterized in that:
(1), have a housing (1),
(2), charging contact supporting (3) is housed in the housing (1), charging contact (2) is arranged on support (3),
(3), the charging contact supporting (3) the below be equipped with the charging contact reaction spring (8),
(4), auxiliary contact support (5) is housed in the housing (1), auxiliary contact (4) is housed on support (5),
(5), in charging contact supporting (3), permanent magnet (6) is housed, yoke (7) is housed on auxiliary contact support (5),
(6), on the loop of charging contact (2), be in series with current limiting element (9).
2, the charging of A.C. contactor according to claim 1 suppresses to shove device, and it is characterized in that: described current limiting element (9) is the alloying metal line.
3, the charging of A.C. contactor according to claim 1 and 2 suppresses to shove device, and it is characterized in that: described auxiliary contact (4) has two pairs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95227514 CN2251794Y (en) | 1995-11-17 | 1995-11-17 | Charging surge arrester for ac contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95227514 CN2251794Y (en) | 1995-11-17 | 1995-11-17 | Charging surge arrester for ac contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2251794Y true CN2251794Y (en) | 1997-04-09 |
Family
ID=33873330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95227514 Expired - Lifetime CN2251794Y (en) | 1995-11-17 | 1995-11-17 | Charging surge arrester for ac contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2251794Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102623252A (en) * | 2012-01-31 | 2012-08-01 | 上海诺雅克电气有限公司 | Capacitive contactor with bistable-state current-limiting contacts |
| CN103035449A (en) * | 2011-09-30 | 2013-04-10 | 西门子公司 | Pre-contact module in capacitor contactor |
| CN109617089A (en) * | 2018-12-12 | 2019-04-12 | 西安交通大学 | A kind of reactive power compensator inhibiting function with inrush phenomenon |
-
1995
- 1995-11-17 CN CN 95227514 patent/CN2251794Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103035449A (en) * | 2011-09-30 | 2013-04-10 | 西门子公司 | Pre-contact module in capacitor contactor |
| CN103035449B (en) * | 2011-09-30 | 2015-03-11 | 西门子公司 | Pre-contact module in capacitor contactor |
| CN102623252A (en) * | 2012-01-31 | 2012-08-01 | 上海诺雅克电气有限公司 | Capacitive contactor with bistable-state current-limiting contacts |
| CN109617089A (en) * | 2018-12-12 | 2019-04-12 | 西安交通大学 | A kind of reactive power compensator inhibiting function with inrush phenomenon |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |