CN2364608Y - Overvoltage protection device for leakage protector - Google Patents
Overvoltage protection device for leakage protector Download PDFInfo
- Publication number
- CN2364608Y CN2364608Y CN 99202462 CN99202462U CN2364608Y CN 2364608 Y CN2364608 Y CN 2364608Y CN 99202462 CN99202462 CN 99202462 CN 99202462 U CN99202462 U CN 99202462U CN 2364608 Y CN2364608 Y CN 2364608Y
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- utility
- model
- constant voltage
- leakage protector
- electric capacity
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- 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 relates to an overvoltage protecting device for an electrical leakage protector, which is composed of two constant voltage diodes and a capacitor, wherein, one forward direction silicon constant voltage diode is connected in series with a reverse direction silicon constant voltage diode; one capacitor which is connected in parallel with a resistor is connected in series to the constant voltage diodes. The utility model can be used on any electrical leakage protectors. The utility model has the advantages of simple structure, low cost, and quick action. The utility model is especially suitable for protecting household appliances.
Description
The utility model belongs to the over-pressure safety device of the earth leakage protective device of household electrical appliance.
The over-pressure safety device of existing earth leakage protective device is that the itself power consumption is very big with large-scale voltage-stabiliser tube protection; the cost height, failure rate is big, when inserting supply voltage greater than 300V; could trip after must waiting until 30 seconds, the time is too slow, can not effectively protect household electrical appliance.
The purpose of this utility model be to provide a kind of simple in structure, cost is low, the over-pressure safety device of the earth leakage protective device that is used for household electrical appliance that is swift in motion.
The purpose of this utility model realizes by following technical scheme: the over-pressure safety device of earth leakage protective device is made up of two voltage stabilizing didoes and an electric capacity; be serially connected by a forward silicon voltage regulator diode and a reverse silicon voltage regulator diode before this; and then being serially connected in the voltage stabilizing didoe back after an electric capacity and a resistance parallel connection; the voltage stabilizing didoe effect is to reduce unloaded complete machine electric current; electric capacity and resistance are to make input voltage at 300V and when above, and zero sequence current mutual inductor induces an alternating voltage that makes the switching tube conducting in the electronic building brick.
The utility model over-pressure safety device does not directly connect with the electronic building brick of earth leakage protective device; so any earth leakage protective device all can adopt; during use, an end of voltage stabilizing didoe is walked around zero sequence current mutual inductor and is connected in the live wire outlet, and electric capacity and resistance one terminate on the ground wire.It has simple in structure, cost is low, be swift in motion, characteristics that protection range is big.
Below in conjunction with drawings and Examples the utility model is further described.
Fig. 1 is the utility model circuit diagram.
Fig. 2 is the circuit diagram of the utility model embodiment.
An embodiment of the present utility model is as shown in the figure: two voltage stabilizing didoe models are UPC-574, a forward silicon voltage regulator diode and a reverse silicon voltage regulator diode are serially connected, again a 10000PFKV electric capacity be serially connected in the voltage stabilizing didoe back after the resistance of 1M Ω is in parallel.During the work of the utility model over-pressure safety device, voltage stabilizing didoe one end is walked around zero sequence current mutual inductor and is connected in the live wire outlet, and electric capacity and resistance one terminate on the ground wire.When zero sequence current mutual inductor just produces an alternating voltage that the 0.3V left and right sides is faint behind inlet wire input 300V and above alternating voltage; make the switching tube conducting drive the actuating of relay; cut off electric current; and when this high voltage is not removed; the main switch of earth leakage protective device closes not brake application, and whole process was finished in 0.1 second.The utility model is simple in structure, cost is low, logical electricity once when removing action, and generally not power consumption, protection range is big, and failure rate is low, is swift in motion.
Claims (1)
1, a kind of over-pressure safety device of earth leakage protective device; it is characterized in that: form by two voltage stabilizing didoes and an electric capacity; a forward silicon voltage regulator diode and a reverse silicon voltage regulator diode are serially connected, and are serially connected on the voltage stabilizing didoe after an electric capacity and a resistance parallel connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99202462 CN2364608Y (en) | 1999-01-25 | 1999-01-25 | Overvoltage protection device for leakage protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99202462 CN2364608Y (en) | 1999-01-25 | 1999-01-25 | Overvoltage protection device for leakage protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2364608Y true CN2364608Y (en) | 2000-02-16 |
Family
ID=33997899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99202462 Expired - Fee Related CN2364608Y (en) | 1999-01-25 | 1999-01-25 | Overvoltage protection device for leakage protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2364608Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113890151A (en) * | 2021-10-08 | 2022-01-04 | 茂硕电源科技股份有限公司 | Energy-saving circuit, device and equipment |
-
1999
- 1999-01-25 CN CN 99202462 patent/CN2364608Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113890151A (en) * | 2021-10-08 | 2022-01-04 | 茂硕电源科技股份有限公司 | Energy-saving circuit, device and equipment |
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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 |