CN2159076Y - Multifunction leakage break protector - Google Patents
Multifunction leakage break protector Download PDFInfo
- Publication number
- CN2159076Y CN2159076Y CN 92222189 CN92222189U CN2159076Y CN 2159076 Y CN2159076 Y CN 2159076Y CN 92222189 CN92222189 CN 92222189 CN 92222189 U CN92222189 U CN 92222189U CN 2159076 Y CN2159076 Y CN 2159076Y
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- CN
- China
- Prior art keywords
- bridge rectifier
- release
- chip
- pin
- utility
- 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 a multifunctional leakage break protector. The utility model comprises bimetal leaf springs, a transformer TA, an integrated package IC, a bridge rectifier circuit VD and a release KM, the bimetal leaf springs are connected with the fire wire and the zero wire, the transformer TA is composed of a magnetic loop and secondary coils, the magnetic loop passes round the fire wire and the zero wire, the bridge rectifier circuit VD is composed of a diode D 1-D 4, and a voltage dependent resistor RMY is arranged between the positive input end and the negative input end of the bridge rectifier circuit VD. The utility model not only has the functions of leakage protection and overload protection, but also has the functions of overvoltage protection and lightning protection, the operation is safe, and the service life is long.
Description
The utility model relates to the multifunctional electric leakage breaker protector in a kind of electrical apparatus technology.
Existing residual current circuit breaker only has earth leakage protective and overload protection function, does not have overvoltage and anti-lightning strike defencive function usually, and therefore in use, if run into overvoltage or thunderbolt, circuit breaker is fragile, influences useful life, and poor safety performance.
The purpose of this utility model is to overcome the defective of above-mentioned technology, and a kind of multifunctional electric leakage breaker protector with overvoltage or anti-lightning strike defencive function is provided, its long service life, and security performance is good.
The instrument transformer TA that the utility model comprises the bimetal spring FR that is connected on live wire and the zero line, be made up of the magnet ring of walking around live wire and zero line and secondary coil, ic chip, by D
1～D
4The bridge rectifier VD, the release KM that form, the secondary coil of instrument transformer TA connects 2 pin and 3 pin of ic chip respectively, bridge rectifier VD input anode is through the coil of release KM start to exchange fire line, input negative terminal connecting to neutral line, the contact of release KM is inserted live wire and zero line respectively, bridge rectifier VD controllable silicon VT in parallel, 7 pin of the control termination ic chip of controllable silicon VT, bridge rectifier VD is through resistance R
4Connect with 8 pin of ic chip, between the positive and negative end of input of the bridge rectifier VD between release KM and the bridge rectifier VD, connect and establish piezo-resistance RMY.
Below in conjunction with embodiment and accompanying drawing the utility model is further described.
Accompanying drawing is the line assumption diagram of present embodiment.
The instrument transformer TA that present embodiment is provided with the bimetal spring FR that is connected on live wire and the zero line, be made up of the magnet ring of walking around live wire and zero line and secondary coil, ic chip, by diode D
1, D
2, D
3, D
4The bridge rectifier VD, the release KM that form, the secondary coil of instrument transformer TA is respectively through resistance R
3Connect 2 pin of ic chip, through capacitor C
2Connect 3 pin of ic chip, 1 pin of ic chip has also been received capacitor C
2The secondary coil end.Bridge rectifier VD input anode is through the coil of release KM start to exchange fire line, input negative terminal connecting to neutral line, the contact of release KM is inserted live wire and zero line respectively, bridge rectifier VD controllable silicon VT in parallel, 7 pin of the control termination ic chip of controllable silicon VT, bridge rectifier VD is through resistance R
4Connect 3 pin of ic chip, 4 pin and 5 foot meridian capacitor C with 8 pin of ic chip
3, 6 foot meridian capacitor C
4, 7 foot meridian capacitor C
5, 8 foot meridian capacitor C
6All receive the negative pole of controllable silicon VT.Between the positive and negative end of input of the bridge rectifier VD between release KM and the bridge rectifier VD, connect and establish piezo-resistance RMY.The two ends parallel resistance R of the secondary coil of instrument transformer TA
2, capacitor C
1
During work, source current is given load behind release KM contact and overload protection thermal element bimetal leaf FR, and when leakage current generating, the secondary coil of instrument transformer TA induces electric current, through resistance R
2Be converted to voltage signal, this signal is through capacitor C
1Filtering, resistance R
3Give ic chip 2 pin after the current limliting, signal of 7 pin output of ic chip is given the control end of controllable silicon VT, makes controllable silicon VT conducting, and trip coil gets electric current, and its contact KM disconnects rapidly, cuts off the electricity supply, and reaches earth leakage protective.Bridge rectifier VD is converted to direct current to alternating current, supplies with controllable silicon VT operating voltage, simultaneously through resistance R
4Current limliting, capacitor C
6Supply with the ic chip working power after the filtering.Present embodiment also is provided with by being positioned at bimetal spring FR live wire, button SB, resistance R before
1, be positioned at the testing circuit that the zero line after the instrument transformer TA constitutes, during detection, button SB presses, resistance R
1On flow through one the simulation leakage current, with in like manner above-mentioned, the contact of release KM can disconnect rapidly, whether this testing circuit is used to check creepage protection function normal.
When the electric current that flows to load was too big, bimetal spring FR can make it to disconnect in the crooked contact that directly promotes release KM, cuts off the electricity supply.
In when, overvoltage taking place or being struck by lightning when, piezo-resistance RMY conducting, have electric current to flow to zero line through release KM coil, piezo-resistance RMY from live wire this moment, and the contact of release KM also disconnects.
The utility model not only has electric leakage, overload protection function, also has overvoltage and anti-lightning strike defencive function, and it is reliable to be swift in motion, and piezo-resistance RMY can repeatedly use not fragile, the useful life of having improved product, and use more safe and reliable.
Claims (1)
1, a kind of multifunctional electric leakage breaker protector, the instrument transformer TA that comprises the bimetal spring FR that is connected on live wire and the zero line, forms by the magnet ring of walking around live wire and zero line and secondary coil, ic chip, by diode D
1～D
4The bridge rectifier VD, the release KM that form, instrument transformer TA secondary coil connects 2 pin and 3 pin of ic chip respectively, bridge rectifier VD input anode is through the coil of release KM start to exchange fire line, input negative terminal connecting to neutral line, the contact of release KM is inserted live wire and zero line respectively, bridge rectifier VD controllable silicon VT in parallel, 7 pin of the control termination ic chip of controllable silicon VT, bridge rectifier VD is through resistance R
4Connect of the present utility model being characterised in that with 8 pin of ic chip: between the positive and negative end of input of the bridge rectifier VD between release KM and the bridge rectifier VD, connect and establish piezo-resistance RMY.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92222189 CN2159076Y (en) | 1992-05-14 | 1992-05-14 | Multifunction leakage break protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92222189 CN2159076Y (en) | 1992-05-14 | 1992-05-14 | Multifunction leakage break protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2159076Y true CN2159076Y (en) | 1994-03-16 |
Family
ID=33768743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92222189 Expired - Fee Related CN2159076Y (en) | 1992-05-14 | 1992-05-14 | Multifunction leakage break protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2159076Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102142671A (en) * | 2010-01-28 | 2011-08-03 | 黄华道 | Novel leakage protection circuit |
| CN104934932A (en) * | 2015-06-17 | 2015-09-23 | 广东融捷光电科技有限公司 | Intelligent direct current electricity leakage detection and surge protection device |
| CN111327019A (en) * | 2020-03-10 | 2020-06-23 | 郑州航空工业管理学院 | Electronic automatic switch |
-
1992
- 1992-05-14 CN CN 92222189 patent/CN2159076Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102142671A (en) * | 2010-01-28 | 2011-08-03 | 黄华道 | Novel leakage protection circuit |
| CN104934932A (en) * | 2015-06-17 | 2015-09-23 | 广东融捷光电科技有限公司 | Intelligent direct current electricity leakage detection and surge protection device |
| CN104934932B (en) * | 2015-06-17 | 2017-10-31 | 广东融捷光电科技有限公司 | A kind of intelligent DC detection of electrical leakage and surge protective device |
| CN111327019A (en) * | 2020-03-10 | 2020-06-23 | 郑州航空工业管理学院 | Electronic automatic switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |