CN102364797A - Overvoltage leakage protector - Google Patents
Overvoltage leakage protector Download PDFInfo
- Publication number
- CN102364797A CN102364797A CN2011103602076A CN201110360207A CN102364797A CN 102364797 A CN102364797 A CN 102364797A CN 2011103602076 A CN2011103602076 A CN 2011103602076A CN 201110360207 A CN201110360207 A CN 201110360207A CN 102364797 A CN102364797 A CN 102364797A
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- Prior art keywords
- overvoltage
- electrical equipment
- consumer
- leakage protector
- intermediate link
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- 230000001012 protector Effects 0.000 title abstract 3
- 230000001681 protective effect Effects 0.000 claims description 8
- 230000002265 prevention Effects 0.000 abstract 2
- 238000001514 detection method Methods 0.000 abstract 1
- 235000014676 Phragmites communis Nutrition 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The invention relates to a leakage protection device, which is particularly applied to the electrical equipment burning-out prevention of overvoltage. At present, power voltage may be suddenly boosted by various factors in the actual application of a power consumer, thereby causing the burning out of electrical equipment and even causing a fire. An overvoltage leakage protector provided by the invention consists of a detection element, an intermediate link, an actuator and a test device, and is characterized in that: one end of a varistor is connected with an incoming line of a power supply circuit, and the other end of the varistor runs through a zero sequence current transformer to be connected with an outgoing line of the power supply circuit. The overvoltage leakage protector provides low-cost overvoltage prevention technical means for the electrical equipment of the consumer, and ensures the safe running of the electrical equipment of the consumer.
Description
Technical field
The present invention relates to a kind of earth leakage protective device, be specially adapted to prevent that overvoltage from burning out electric equipment.
Background technology
At present, the earth leakage protective device in the low-voltage system is one of effective measures that prevent the accident of human electric shock, also is the technical measures that prevent to cause because of electric leakage electrical fire and electric equipment damage accident.But in the power consumer actual motion, the supply voltage that causes owing to a variety of causes sometimes raises suddenly, thereby causes electric equipment to burn out, even causes fire.Thereby people urgently hope to have a kind of low cost solution.
Summary of the invention
The object of the invention provides a kind of exactly and solves because supply voltage raises suddenly cheaply, thereby causes burning out the technical scheme of electric equipment.
Technical scheme of the present invention is a kind of overvoltage earth leakage protective device; Form by detecting element, intermediate link, actuator, experimental rig; Detecting element can adopt zero sequence current mutual inductor, and intermediate link is generally amplifier, also can comprise comparator, release etc.; It is characterized in that: an end of a piezo-resistance connects the inlet wire of supply line, and its other end is crossed over the outlet that described zero sequence current mutual inductor connects supply line.
The invention has the beneficial effects as follows: the technological means for a kind of anti-overvoltage cheaply of user's electric equipment confession guarantees the safe operation of subscriber equipment.
Description of drawings
Accompanying drawing 1 is a structural representation of the present invention
In the accompanying drawing, 1. piezo-resistance, 2. primary coil, 3. coil, 4. normally opened contact, 5. tripping coil, 6. switch, 7. user load, 8. human body resistance, 9. test button, the 10. current-limiting resistance of reed relay of reed relay of zero sequence current mutual inductor.
Embodiment
With reference to accompanying drawing, use when of the present invention, when supply voltage in the nominal value of selected piezo-resistance, promptly overvoltage does not take place in system, piezo-resistance is in cut-off state, the present invention is the same with known earth leakage protective device course of action.When supply voltage surpasses the nominal value of piezo-resistance, i.e. system's generation overvoltage will have the electric current that rises rapidly to flow through piezo-resistance; Make originally passed the inlet wire current of zero sequence current mutual inductor primary coil with in the load return current between balance broken, in the zero sequence current mutual inductor primary coil, produce electric current, when this electric current passes through the coil of reed relay; The normally opened contact of reed relay is closed; The tripping coil conducting makes switch break off, thereby realizes over-voltage protecting function.
Except that the foregoing description, the present invention can also have other execution mode.All employings are equal to the technical scheme of replacement or equivalent transformation form, all drop on the protection range of requirement of the present invention.
Claims (3)
1. overvoltage earth leakage protective device; Form by detecting element, intermediate link, actuator, experimental rig; Detecting element is a zero sequence current mutual inductor; It is characterized in that: an end of a piezo-resistance connects the inlet wire of supply line, and its other end is crossed over the outlet that described zero sequence current mutual inductor connects supply line.
2. overvoltage earth leakage protective device according to claim 1 is characterized in that: its described intermediate link is amplifier.
3. overvoltage earth leakage protective device according to claim 1 is characterized in that: its described intermediate link is made up of amplifier, comparator, release.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103602076A CN102364797A (en) | 2011-11-10 | 2011-11-10 | Overvoltage leakage protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103602076A CN102364797A (en) | 2011-11-10 | 2011-11-10 | Overvoltage leakage protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102364797A true CN102364797A (en) | 2012-02-29 |
Family
ID=45691351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103602076A Pending CN102364797A (en) | 2011-11-10 | 2011-11-10 | Overvoltage leakage protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102364797A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151758A (en) * | 2013-03-15 | 2013-06-12 | 王继杰 | Voltage and current type electric leakage plug |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87212818U (en) * | 1987-12-03 | 1988-11-02 | 淄博无线电二厂 | Overvoltage leakage protector |
| US20070247769A1 (en) * | 2006-04-24 | 2007-10-25 | Wenzhou Yongtai Electric Co., Ltd. | Receptacle type ground-fault circuit interrupter |
| CN202513544U (en) * | 2011-11-10 | 2012-10-31 | 江苏省电力公司射阳县供电公司 | Over-voltage leakage protector |
-
2011
- 2011-11-10 CN CN2011103602076A patent/CN102364797A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87212818U (en) * | 1987-12-03 | 1988-11-02 | 淄博无线电二厂 | Overvoltage leakage protector |
| US20070247769A1 (en) * | 2006-04-24 | 2007-10-25 | Wenzhou Yongtai Electric Co., Ltd. | Receptacle type ground-fault circuit interrupter |
| CN202513544U (en) * | 2011-11-10 | 2012-10-31 | 江苏省电力公司射阳县供电公司 | Over-voltage leakage protector |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151758A (en) * | 2013-03-15 | 2013-06-12 | 王继杰 | Voltage and current type electric leakage plug |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: SHEYANG POWER SUPPLY COMPANY OF JIANGSU ELECTRIC POWER COMPANY Effective date: 20131018 Owner name: JIANGSU ELECTRIC POWER COMPANY SHEYANG POWER SUPPL Effective date: 20131018 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 224300 YANCHENG, JIANGSU PROVINCE TO: 100031 XICHENG, BEIJING |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20131018 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant after: State Grid Corporation of China Applicant after: Jiangsu Electric Power Company Applicant after: Sheyang county Power Supply Company of Jiangsu Electric Power Company Address before: 224300 No. 18 East Renmin Road, Sheyang County, Yancheng City, Jiangsu Applicant before: Sheyang county Power Supply Company of Jiangsu Electric Power Company |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120229 |