CN203205349U - Vacuum contactor closing loop - Google Patents
Vacuum contactor closing loop Download PDFInfo
- Publication number
- CN203205349U CN203205349U CN 201320083207 CN201320083207U CN203205349U CN 203205349 U CN203205349 U CN 203205349U CN 201320083207 CN201320083207 CN 201320083207 CN 201320083207 U CN201320083207 U CN 201320083207U CN 203205349 U CN203205349 U CN 203205349U
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- CN
- China
- Prior art keywords
- closing
- vacuum contactor
- coil
- closing coil
- normally closed
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- Expired - Fee Related
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Abstract
The utility model discloses a vacuum contactor closing loop. The vacuum contactor closing loop comprises a power source, a protection fuse FU, a closing button SA, a normally-closed contact NC, a closing coil KM1 and a maintenance coil KM2, wherein the closing button SA is connected in series with the closing coil KM1 and then is connected in parallel with the maintenance coil KM2 to form a parallel circuit, and the parallel circuit is connected in series with the protection fuse FU. The vacuum contactor closing loop is characterized in that external locking terminals X1/X2 are arranged between the closing coil KM1 and the closing button SA, the external locking terminals X1/X2 are used for wiring of an external locking normally-closed contact BS. The vacuum contactor closing loop avoids a severe accident of burnout of a closing coil in an original vacuum contactor caused by failure of a normally-closed auxiliary contact and improves use reliability of equipment.
Description
Technical field
The utility model belongs to the electic protection field, is specifically related to a kind of vacuum contactor closing circuit.
Background technology
Vacuum contactor is that two contact encapsulation of contactor are lived in the vacuum bubbles, utilizes the vacuum withstand voltage level high, and the characteristics that the arc extinguishing ability is strong can be used in high voltage circuit and cut-off larger short circuit current.Existing vacuum contactor comprises one pair of closing coil, one pair of hold-in winding, Third Mate's main contact, a pair of normally closed auxiliary contact and a pair of auxiliary contact of often opening at least.One pair of normally closed auxiliary contact and closing coil locking are often opened auxiliary contact and one pair of hold-in winding locking for one pair.Closing coil gets electric later on main contact moment closure, the drive normally closed auxiliary contact disconnects, and often opens the auxiliary contact closure, and often opening the auxiliary contact closure, to cause hold-in winding to get electric, make main contact remain on closure state, simultaneously normally closed auxiliary contact disconnects and causes the closing coil dead electricity.In case auxiliary contact causes closing coil to continue electricly because the reasons such as installation accuracy cause action malfunctioning, burns closing coil.
Summary of the invention
The utility model purpose is: provide a kind of and can solve the malfunctioning vacuum contactor closing circuit that causes the phenomenon of Burnout of Closing Coil of auxiliary contact.
The technical solution of the utility model is: a kind of vacuum contactor closing circuit; comprise power supply, protection fuse FU, switch knob SA, normally closed interlock NC, closing coil KM1 and hold-in winding KM2; switch knob SA connect with closing coil KM1 after with hold-in winding KM2 formation in parallel parallel circuits; described parallel circuits is connected with protection fuse FU; it is characterized in that; be provided with outside locking terminal X1/X2 between described closing coil KM1 and the switch knob SA, described outside locking terminal X1/X2 is for outside locking normally closed interlock BS wiring.
Further, described closing coil KM1 is provided with normally closed interlock NC, and described hold-in winding KM2 is provided with normally open contact NO, described normally closed interlock NC and normally open contact NO interlock.
SA presses when switch knob, and the contactor closing coil gets electric, and main contact is closed.After the main noddle on contactor closure, power loop gets electric, and outside block signal BS was opened by normally closed often transferring to, and contactor closing coil dead electricity guarantees that closing coil can not burn because normally closed auxiliary contact loses efficacy.
The utility model has the advantages that:
The utility model has overcome original vacuum contactor and has caused the serious accident of Burnout of Closing Coil, the reliability that raising equipment uses because normally closed auxiliary contact lost efficacy.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described:
Fig. 1 is vacuum contactor closing circuit circuit diagram of the present utility model.
Embodiment
Embodiment: vacuum contactor closing circuit as shown in Figure 1; comprise power supply, protection fuse FU, switch knob SA, normally closed interlock NC, closing coil KM1 and hold-in winding KM2; switch knob SA connect with closing coil KM1 after with hold-in winding KM2 formation in parallel parallel circuits; described parallel circuits is connected with protection fuse FU; it is characterized in that; be provided with outside locking terminal X1/X2 between described closing coil KM1 and the switch knob SA, described outside locking terminal X1/X2 is for outside locking normally closed interlock BS wiring.Closing coil KM1 is provided with normally closed interlock NC, and described hold-in winding KM2 is provided with normally open contact NO, described normally closed interlock NC and normally open contact NO interlock.In this example, frequency converter powers on after the vacuum contactor main contact closure.In case frequency converter powers on, frequency converter will be sent operation and be ready to signal.This signal can be used as this routine peripheral block signal BS and uses, and makes vacuum contactor after the main contact closure, the closing coil dead electricity.SA presses when switch knob, and the contactor closing coil gets electric, and main contact is closed.After the main noddle on contactor closure, power loop gets electric, and outside block signal BS was opened by normally closed often transferring to, and contactor closing coil dead electricity guarantees that closing coil can not burn because normally closed auxiliary contact loses efficacy.
Above-described embodiment only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the people who is familiar with technique can understand content of the present utility model and according to this enforcement, can not limit protection range of the present utility model with this.All modifications of doing according to the Spirit Essence of the utility model main technical schemes all should be encompassed within the protection range of the present utility model.
Claims (2)
1. vacuum contactor closing circuit; comprise power supply; protection fuse (FU); switch knob (SA); normally closed interlock (NC); closing coil (KM1) and hold-in winding (KM2); switch knob (SA) connect with closing coil (KM1) after with hold-in winding (KM2) formation in parallel parallel circuits; described parallel circuits is connected with protection fuse (FU); it is characterized in that; be provided with outside locking terminal (X1/X2) between described closing coil (KM1) and the switch knob (SA), described outside locking terminal (X1/X2) is for outside locking normally closed interlock (BS) wiring.
2. vacuum contactor closing circuit according to claim 1, it is characterized in that, described closing coil (KM1) is provided with normally closed interlock (NC), and described hold-in winding (KM2) is provided with normally open contact (NO), described normally closed interlock (NC) and normally open contact (NO) interlock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320083207 CN203205349U (en) | 2013-02-22 | 2013-02-22 | Vacuum contactor closing loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320083207 CN203205349U (en) | 2013-02-22 | 2013-02-22 | Vacuum contactor closing loop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203205349U true CN203205349U (en) | 2013-09-18 |
Family
ID=49149430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320083207 Expired - Fee Related CN203205349U (en) | 2013-02-22 | 2013-02-22 | Vacuum contactor closing loop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203205349U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107202955A (en) * | 2017-07-27 | 2017-09-26 | 大力电工襄阳股份有限公司 | A kind of vacuum contactor on/off switch state indirect detection devices and methods therefor |
| CN110459444A (en) * | 2019-09-12 | 2019-11-15 | 正阳科技股份有限公司 | A kind of over-current protection relay |
-
2013
- 2013-02-22 CN CN 201320083207 patent/CN203205349U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107202955A (en) * | 2017-07-27 | 2017-09-26 | 大力电工襄阳股份有限公司 | A kind of vacuum contactor on/off switch state indirect detection devices and methods therefor |
| CN107202955B (en) * | 2017-07-27 | 2023-07-25 | 大力电工襄阳股份有限公司 | Device and method for indirectly detecting on-off state of vacuum contactor |
| CN110459444A (en) * | 2019-09-12 | 2019-11-15 | 正阳科技股份有限公司 | A kind of over-current protection relay |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130918 Termination date: 20180222 |