CN201369564Y - Over-voltage protective device - Google Patents
Over-voltage protective device Download PDFInfo
- Publication number
- CN201369564Y CN201369564Y CNU2009201152097U CN200920115209U CN201369564Y CN 201369564 Y CN201369564 Y CN 201369564Y CN U2009201152097 U CNU2009201152097 U CN U2009201152097U CN 200920115209 U CN200920115209 U CN 200920115209U CN 201369564 Y CN201369564 Y CN 201369564Y
- Authority
- CN
- China
- Prior art keywords
- switch
- over
- rheostat
- testing circuit
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses an over-voltage protective device, which comprises a detection circuit, a rheostat and a switch, wherein one detection end of the detection circuit is connected with a firing line, and the other detection end thereof is connected with a zero line; the rheostat and the switch are connected in parallel on the firing line; one output end of the detection circuit is connected with the control end of the rheostat, and the other output end thereof is connected with the control end of the switch. The over-voltage protective device can protect circuits.
Description
Technical field
The utility model relates to a kind of over-pressure safety device.
Background technology
The mode that circuit is protected mainly is to occur under the situation of electric leakage circuit being disconnected in circuit at present.Yet the voltage of circuit rises suddenly, also can the electrical equipment in the circuit be caused damage.
The utility model content
The purpose of this utility model is to provide a kind of over-pressure safety device, and circuit is protected.
The utility model provides a kind of over-pressure safety device, comprises testing circuit, rheostat and switch, a test side of the described testing circuit line of starting to exchange fire, another test side connecting to neutral line; Described rheostat and switch series are associated on the live wire, a described rheostatic control end of output termination of described testing circuit, the control end of the described switch of another output termination of described testing circuit.
Description of drawings
Fig. 1 is the structural representation of the utility model over-pressure safety device.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the utility model embodiment is done further and to be elaborated.
See also Fig. 1, a kind of over-pressure safety device comprises testing circuit 1, rheostat 2 and switch 3, a test side of the testing circuit line 4 of starting to exchange fire, another test side connecting to neutral line 5; Rheostat and switch series are associated on the live wire, a rheostatic control end of output termination of testing circuit, the control end of another output termination switch of testing circuit.
Testing circuit detects the voltage on live wire and the zero line, according to the resistance of testing result standardsizing rheostat, when overtension, carries out dividing potential drop by increasing rheostatic resistance, thus the electrical equipment in the protective circuit.After the rheostat dividing potential drop, voltage still surpasses the rated voltage of electrical equipment in the circuit, and then the testing circuit cut-off switch is protected circuit.
The above only is an embodiment of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (1)
1, a kind of over-pressure safety device is characterized in that, comprises testing circuit, rheostat and switch, a test side of the described testing circuit line of starting to exchange fire, another test side connecting to neutral line; Described rheostat and switch series are associated on the live wire, a described rheostatic control end of output termination of described testing circuit, the control end of the described switch of another output termination of described testing circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201152097U CN201369564Y (en) | 2009-03-09 | 2009-03-09 | Over-voltage protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201152097U CN201369564Y (en) | 2009-03-09 | 2009-03-09 | Over-voltage protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201369564Y true CN201369564Y (en) | 2009-12-23 |
Family
ID=41488455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201152097U Expired - Fee Related CN201369564Y (en) | 2009-03-09 | 2009-03-09 | Over-voltage protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201369564Y (en) |
-
2009
- 2009-03-09 CN CNU2009201152097U patent/CN201369564Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20100831 Address after: 318050, Taizhou, Zhejiang province Luqiao District Feng Jiang Street, No. 45, mountain road Patentee after: Jiang Xinhui Address before: 317200 No. 62 Tiantai Mountain West Road, Tiantai County, Zhejiang province (Zhejiang Harbert Electronic Technology Co., Ltd. R & D department) Patentee before: Zhang Wenjun |
|
| ASS | Succession or assignment of patent right |
Owner name: CHINA PACIFIC CABLE GROUP CO., LTD. Free format text: FORMER OWNER: JIANG XINHUI Effective date: 20100927 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20100927 Address after: 318050, Taizhou, Zhejiang province Luqiao District Feng Jiang Street, No. 12, mountain road Patentee after: Pacific Cable Group Ltd Address before: 318050, Taizhou, Zhejiang province Luqiao District Feng Jiang Street, No. 45, mountain road Patentee before: Jiang Xinhui |
|
| 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: 20091223 Termination date: 20160309 |