CN2332097Y - Overvoltage circuit breaker - Google Patents
Overvoltage circuit breaker Download PDFInfo
- Publication number
- CN2332097Y CN2332097Y CN 98230929 CN98230929U CN2332097Y CN 2332097 Y CN2332097 Y CN 2332097Y CN 98230929 CN98230929 CN 98230929 CN 98230929 U CN98230929 U CN 98230929U CN 2332097 Y CN2332097 Y CN 2332097Y
- Authority
- CN
- China
- Prior art keywords
- voltage
- thyristor
- circuit breaker
- resistance
- phase voltage
- 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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- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model relates to a phase voltage overvoltage circuit breaker, which is characterized in that a constant voltage diode or voltage-sensitive resistor is utilized to lead the very low voltage out from the 220V phase voltage to be served as the signal which is added to the control pole of a thyristor to control an electronic switch composed of the thyristor and a relay. The breaker has the advantages of simple structure design, and stable and reliable performance.
Description
The utility model relates to a kind of phase voltage superpressure circuit breaker.
The three-phase four-wire system transmission line falls or reason such as zero line dislocation owing to total zero line breaks, and can cause that the 220V voltage of certain phase rises, and when 220V voltage rises to a certain numerical value, household electrical appliance and distribution facility phenomenon will occur burning out.
The purpose of this utility model just provides a kind of superpressure circuit breaker that can prevent that above-mentioned phenomenon from taking place.
The scheme that achieves this end is: utilize voltage stabilizing didoe or piezo-resistance, from the alternating voltage of 220V, draw minimum half-wave or all-wave voltage as signal, be added to the control utmost point of a unidirectional thyristor or a two-way thyristor, remove to control the electronic switch of forming by this thyristor series relay, under the phase voltage of safety, voltage stabilizing didoe or piezo-resistance are in cut-off state, has only minimum leakage current, thyristor is in cut-off state owing to can not get trigger voltage, when the 220V phase voltage rises to a certain numerical value, voltage stabilizing didoe or piezo-resistance conducting, thyristor is because of obtaining the trigger voltage conducting, the actuating of relay, its normally-closed contact disconnects, and send electricity to stop.
Superpressure circuit breaker of the present utility model, simplicity of design, stable and reliable for performance.
Now be described further according to two embodiment.
Embodiment one:
Accompanying drawing 1 is the circuit theory diagrams of embodiment 1.
As shown in Figure 1: the 220V phase voltage is through diode VD
1Ballast, resistance R
1Be added to the negative terminal of voltage stabilizing didoe Vs after the step-down.Usually, voltage stabilizing didoe Vs is in cut-off state, thyristor VT (H) ends because of can not get trigger voltage, and relay K is failure to actuate, when the 220V phase voltage rises to a certain numerical value, the voltage stabilizing didoe conducting, the control utmost point of brilliant lock VT (H) obtains trigger voltage, thyristor VT (H) conducting, relay K action, its normally-closed contact disconnects, and send electricity to stop.SB presses the SB relay K to be failure to actuate for the experiment button, shows that the superpressure circuit breaker breaks down.Resistance R
2, R
3, capacitor C
1Effect be to prevent that relay from producing misoperation, diode VD
3, VD
4Be to prevent that pole tension is too high to burn out diode VD to thyristor VT (H) because of controlling
2Participate in VD
1Ballast.
Embodiment two
Accompanying drawing 2 is circuit theory diagrams of embodiment two.
Shown in figure two, the 220V phase voltage is through resistance R
1Be added to piezo-resistance R after the step-down
2On.Common piezo-resistance R
2Be high-impedance state, have only minimum leakage current to pass through, thyristor VT (H) ends because of can not get trigger voltage.When the 220V phase voltage rises to a certain numerical value, piezo-resistance R
2In electric current sharply increase, thyristor VT (H) is because of obtaining the trigger voltage conducting, the relay K action, its normally-closed contact disconnects, and send electricity to stop, SB is check peace knob, function is the same with embodiment one, resistance R
3, R
4, capacitor C
1Effect be to prevent that relay K from producing misoperation diode VD
1, VD
2, VD
3, VD
4Effect be to prevent that thyristor control pole tension is too high and burn out.
Claims (2)
1. phase voltage superpressure circuit breaker, feature of the present utility model is: utilize voltage stabilizing didoe Vs or piezo-resistance R
2, from the 220V phase voltage, draw minimum half-wave or all-wave voltage as signal, be added to the control utmost point of thyristor VT (H), the electronic switch that goes control to form by this thyristor VT (H) series relay K.
2. superpressure circuit breaker according to claim 1 is characterized in that: voltage stabilizing didoe or piezo-resistance R
2On, button switch SB all in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98230929 CN2332097Y (en) | 1998-06-15 | 1998-06-15 | Overvoltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98230929 CN2332097Y (en) | 1998-06-15 | 1998-06-15 | Overvoltage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2332097Y true CN2332097Y (en) | 1999-08-04 |
Family
ID=33980439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98230929 Expired - Fee Related CN2332097Y (en) | 1998-06-15 | 1998-06-15 | Overvoltage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2332097Y (en) |
-
1998
- 1998-06-15 CN CN 98230929 patent/CN2332097Y/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 | ||
| 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 |