CN105355482A - DC arc-extinguishing circuit - Google Patents
DC arc-extinguishing circuit Download PDFInfo
- Publication number
- CN105355482A CN105355482A CN201510916344.1A CN201510916344A CN105355482A CN 105355482 A CN105355482 A CN 105355482A CN 201510916344 A CN201510916344 A CN 201510916344A CN 105355482 A CN105355482 A CN 105355482A
- Authority
- CN
- China
- Prior art keywords
- circuit
- contact
- direct current
- capacitive
- absorbing circuit
- 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.)
- Pending
Links
- 238000010521 absorption reaction Methods 0.000 abstract 3
- 238000010891 electric arc Methods 0.000 description 8
- 230000006378 damage Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/42—Impedances connected with contacts
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a DC arc-extinguishing circuit, and the circuit comprises a connector contact, a main contact, and an auxiliary contact, wherein the main contact and the auxiliary contact are connected through a first capacitive absorption circuit. The circuit also comprises a second capacitive absorption circuit in parallel connection with a load. The circuit employs two capacitive absorption circuits, so the circuit further reduces the electric potential difference when the connector contact is separated from the main contact, and can avoid a DC arcing phenomenon better.
Description
Technical field
the present invention relates to a kind of direct current crowbar circuit.
Background technology
when two contact webs of connector are electrically separated, as long as voltage is greater than 10 ~ 20V in circuit.Electric current is greater than 80 ~ 100mA.Just electric arc may be there is between dynamic and static contact.Though now contact separates, but electric current continues circulation by the electric arc between contact.
the current instantaneous value generating period change in time of alternating current, therefore at the zero crossing of electric current, electric current becomes 0, and electric arc can disappear automatically.But direct current is not because have current zero-crossing point, therefore, after electric arc produces, extinguishing arc is difficult to; Until two contacts of connector are separated into enough distances, electric arc could disappear automatically.
electric arc is the free gas of high temperature high conductivity, and it not only has very large destruction to contact, may cause serious injury to the person of its periphery or equipment simultaneously, even causes the serious disasters such as fire.
Summary of the invention
the object of this invention is to provide a kind of direct current crowbar circuit.
for achieving the above object, the technical solution used in the present invention is:
a kind of direct current crowbar circuit, comprise connector contact, main contacts and auxiliary contact, being connected by the first capacitive absorbing circuit between described main contacts and auxiliary contact, it also comprises the second capacitive absorbing circuit in parallel with load.
preferably, described auxiliary contact are arranged on the position that must touch before connector contact contacts with main contacts.
preferably, described first capacitive absorbing circuit includes the first electric capacity.
further preferably, described first capacitive absorbing circuit also includes the first resistance with described first capacitances in series.
preferably, described first capacitive absorbing circuit includes the second electric capacity.
further preferably, described first capacitive absorbing circuit also includes the second resistance with described second capacitances in series.
because technique scheme is used, the present invention compared with prior art has following advantages:
owing to present invention employs two capacitive absorbing circuits, electrical potential difference time reduction connector contact and main contacts separate further, can better prevent direct current phenomenon of arc discharge.
Accompanying drawing explanation
accompanying drawing 1 is schematic diagram of the present invention.
in above accompanying drawing: 1, connector contact; 2, main contacts; 3, auxiliary contact; 4, the first electric capacity; 5, the second electric capacity; 6, load; 7, the first resistance; 8, the second resistance.
Embodiment
below in conjunction with embodiment shown in the drawings, the invention will be further described:
embodiment one: shown in accompanying drawing 1, a kind of direct current crowbar circuit, comprise connector contact 1, main contacts 2 and auxiliary contact 3, main tactile being connected by the first capacitive absorbing circuit between 2 and auxiliary contact 3, it also comprises the second capacitive absorbing circuit in parallel with load 6.
auxiliary contact 3 are arranged on the position that must touch before connector contact 1 contacts with main contacts 2.The first resistance 7 that first capacitive absorbing circuit includes the first electric capacity 4 and connects with it.The second resistance 8 that first capacitive absorbing circuit includes the second electric capacity 5 and connects with it.
when the contact 1 of connector is separated with main contacts 2 time, the electric current of connector forwards the first capacitive absorbing circuit to, the electric charge that the second capacitive absorbing circuit release simultaneously stores, and guarantee the moment that the node of connector disconnects, electrical potential difference is less than the condition that electric arc produces.
above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (6)
1. a direct current crowbar circuit, comprise connector contact (1), main contacts (2) and auxiliary contact (3), being connected by the first capacitive absorbing circuit between described main contacts (2) and auxiliary contact (3), it is characterized in that: it also comprises the second capacitive absorbing circuit in parallel with load (6).
2. a kind of direct current crowbar circuit according to claim 1, is characterized in that: described auxiliary contact (3) are arranged on the position that must touch before connector contact (1) contacts with main contacts (2).
3. a kind of direct current crowbar circuit according to claim 1, is characterized in that: described first capacitive absorbing circuit includes the first electric capacity (4).
4. a kind of direct current crowbar circuit according to claim 3, is characterized in that: described first capacitive absorbing circuit also includes first resistance (7) of connecting with described first electric capacity (4).
5. a kind of direct current crowbar circuit according to claim 1, is characterized in that: described first capacitive absorbing circuit includes the second electric capacity (5).
6. a kind of direct current crowbar circuit according to claim 5, is characterized in that: described first capacitive absorbing circuit also includes second resistance (8) of connecting with described second electric capacity (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510916344.1A CN105355482A (en) | 2015-12-10 | 2015-12-10 | DC arc-extinguishing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510916344.1A CN105355482A (en) | 2015-12-10 | 2015-12-10 | DC arc-extinguishing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105355482A true CN105355482A (en) | 2016-02-24 |
Family
ID=55331428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510916344.1A Pending CN105355482A (en) | 2015-12-10 | 2015-12-10 | DC arc-extinguishing circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105355482A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107394763A (en) * | 2017-07-01 | 2017-11-24 | 合肥东玖电气有限公司 | A kind of electric wire netting arc extinguishing and overvoltage protection system |
| CN107394761A (en) * | 2017-07-01 | 2017-11-24 | 合肥东玖电气有限公司 | A kind of direct current extinguishing arc and overvoltage protection system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101888045A (en) * | 2010-06-02 | 2010-11-17 | 江苏艾索新能源股份有限公司 | Circuit and method for preventing direct current arc discharge |
| CN101895028A (en) * | 2010-06-02 | 2010-11-24 | 江苏艾索新能源股份有限公司 | Anti-direct current arc discharge circuit |
| CN202282302U (en) * | 2011-10-26 | 2012-06-20 | 埃泰克汽车电子(芜湖)有限公司 | Relay protective circuit |
| WO2015025420A1 (en) * | 2013-08-23 | 2015-02-26 | 富士通コンポーネント株式会社 | Connector |
-
2015
- 2015-12-10 CN CN201510916344.1A patent/CN105355482A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101888045A (en) * | 2010-06-02 | 2010-11-17 | 江苏艾索新能源股份有限公司 | Circuit and method for preventing direct current arc discharge |
| CN101895028A (en) * | 2010-06-02 | 2010-11-24 | 江苏艾索新能源股份有限公司 | Anti-direct current arc discharge circuit |
| CN202282302U (en) * | 2011-10-26 | 2012-06-20 | 埃泰克汽车电子(芜湖)有限公司 | Relay protective circuit |
| WO2015025420A1 (en) * | 2013-08-23 | 2015-02-26 | 富士通コンポーネント株式会社 | Connector |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107394763A (en) * | 2017-07-01 | 2017-11-24 | 合肥东玖电气有限公司 | A kind of electric wire netting arc extinguishing and overvoltage protection system |
| CN107394761A (en) * | 2017-07-01 | 2017-11-24 | 合肥东玖电气有限公司 | A kind of direct current extinguishing arc and overvoltage protection system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107533926B (en) | By-pass switch provides the method and power system of conductive path | |
| CN101888045A (en) | Circuit and method for preventing direct current arc discharge | |
| CN203180517U (en) | Microcomputer arc-extinguishing, harmonic-eliminating and overvoltage-protecting device | |
| CN105355482A (en) | DC arc-extinguishing circuit | |
| CN105262323B (en) | On-off control circuit | |
| CN103839710A (en) | Mixed type direct current breaker | |
| CN201805036U (en) | Circuit preventing direct current arc discharge | |
| CN101895028A (en) | Anti-direct current arc discharge circuit | |
| CN204391681U (en) | Earth leakage protective device | |
| CN104410059B (en) | A discharge gap arc extinguishing method for an intrinsically safe inductive circuit | |
| CN103618295A (en) | Photoelectric type arc light protecting system | |
| CN205751825U (en) | A kind of novel transformer on-load voltage regulating switch | |
| CN204885020U (en) | relay module | |
| CN207799010U (en) | It is a kind of realize lightning surge and insulate voltage-withstand test simultaneously by design circuit | |
| CN201766190U (en) | Circuit capable of preventing direct current from arc discharge | |
| CN106328439A (en) | relay module | |
| CN206834738U (en) | Switch limits device of restriking | |
| CN105551856B (en) | A kind of circuit of direct current extinguishing arc | |
| CN104283202B (en) | The surge suppression of power supply connecting device and electric spark eliminate structure | |
| CN103871801B (en) | Renewable type fusible cut-out | |
| CN104347327B (en) | A kind of chopper | |
| CN203659670U (en) | Pole column and upper wall structure thereof | |
| CN208508516U (en) | A kind of AC power source surge protective device and electronic equipment | |
| CN107069689A (en) | Switch limits device of restriking | |
| CN206211532U (en) | Lightning protection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 212200 Yangzhong City, Jiangsu Province Economic Development Zone, Hong Xing Road, No. 588, No. Applicant after: Aisima new energy technology (Yangzhong) Co., Ltd. Address before: 212200 Yangzhong City, Jiangsu Province Economic Development Zone, Hong Xing Road, No. 588, No. Applicant before: Jiangsu Zof New Energy Co., Ltd. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160224 |