CN2631091Y - Capacitor short-circuit automatic protecting device - Google Patents
Capacitor short-circuit automatic protecting device Download PDFInfo
- Publication number
- CN2631091Y CN2631091Y CN 03259807 CN03259807U CN2631091Y CN 2631091 Y CN2631091 Y CN 2631091Y CN 03259807 CN03259807 CN 03259807 CN 03259807 U CN03259807 U CN 03259807U CN 2631091 Y CN2631091 Y CN 2631091Y
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- CN
- China
- Prior art keywords
- relay
- closed contact
- protector
- normally
- capacitor
- 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
An automatic protection device of a capacitance short circuit belongs to the circuit automatic protection device. The protection device is provided with a protector, AC power supply is simultaneously connected with a capacitor (C1)and an input terminal of the protector, an output terminal of the protector is simultaneously connected with a normally closed contact (A2) of a relay and a normally closed contact (A4) of a relay, the other end of the normally closed contact (A4) of the relay is an output terminal of the protection device, the other end of the normally closed contact (A2) of the relay is simultaneously connected with a line packet of the relay(J1) and AC power supply, the other end of the line packet of the relay (J1) is simultaneously connected with the other end of the capacitor (C1) and the normally closed contact (A1) of the relay, the normally closed contact (A1) of the relay is the other output terminal of the protection device through a normally closed contact (A3). After using the device, when the capacitor has short circuit, the relay closes, the contact moving with the relay breaks, the device can cut off the power supply automatically, and plays a very good automatic protecting function for low-voltage electricity used circuit.
Description
Technical field
The utility model relates to a kind of circuit automatic safety device, specifically a kind of capacitance short-circuit automatic safety device.
Background technology
The voltage that uses in the life much is to the voltage after the 220V voltage step-down at present, mainly be civil power to be carried out step-down during step-down by transformer or capacitor, when capacitor step-down be with capacitors in series in circuit, when capacitor is short-circuited, capacitor has promptly lost hypotensive effect, as the untimely power supply of turning off, 220V voltage will act directly on the low pressure power circuit, and low pressure is caused very big destruction and danger with circuit.When electric capacity was short-circuited, entire circuit can not self-protection, does not also have good solution at this problem at present.
Summary of the invention
To be solved in the utility model is exactly available technology adopting capacitor when 220V voltage is carried out step-down, when capacitor is short-circuited, and the technical problem that whole low pressure power circuit can not self-protection.
Solve the technical scheme that its technical problem adopts: this protective device has a protector; AC power while and capacitor (C1); the input of protector connects; the output while of protector and the normally-closed contact (A2) of relay; the normally-closed contact of relay (A4) connects; the other end of relay normally-closed contact (A4) is the output of protective device; the other end while of relay normally-closed contact (A2) and the line bag of relay (J1); AC power connects; the other end while of the line bag of relay (J1) and the other end of capacitor (C1); relay normally-closed contact (A1) connects; relay normally-closed contact (A1) is another output of protective device by relay normally-closed contact (A3); relay normally-closed contact (A1); (A2) be the contact of relay (J1), relay normally-closed contact (A3); (A4) be the contact of relay (J2).
Protector has rectifier bridge (W1); one input of rectifier bridge (W1) is the input of protector; another input while and resistance (R1) of rectifier bridge (W1); one input of rectifier bridge (W2) connects; rectifier bridge (W1) just; be connected with fluorescence lamp starter (B) between the negative output terminal; rectifier bridge (W2) just; be connected with relay (J2) and capacitor (C2) in parallel between the negative output terminal; another input while of rectifier bridge (W2) and the other end of resistance (R1); the negative pole of diode (D1) connects, the output of the just very protector of diode (D1).
Beneficial effect: in the circuit of capacitance decompression; after this capacitance short-circuit automatic safety device is installed; when capacitor is short-circuited; relay in the circuit gets electric adhesive; after the relay adhesive with the contact deenergization of its interlock; can cut off the electricity supply automatically, the low pressure power circuit is played well protective effect automatically.
Description of drawings
Fig. 1 is the utility model first embodiment circuit diagram.
Fig. 2 is the utility model second embodiment circuit diagram.
Embodiment
Embodiment 1: this protective device has a protector; AC power while and capacitor C1; the input of protector connects; the output while of protector and the normally-closed contact A2 of relay; the normally-closed contact A4 of relay connects; the other end of relay normally-closed contact A4 is the output of protective device; the other end while of relay normally-closed contact A2 and the line bag of relay J 1; AC power connects; the other end while of the line bag of relay J 1 and the other end of capacitor C1; relay normally-closed contact A1 connects; relay normally-closed contact A1 is another output of protective device by relay normally-closed contact A3; relay normally-closed contact A1; A2 is the contact of relay J 1, relay normally-closed contact A3; A4 is the contact of relay J 2.
Protector has rectifier bridge W1; the input of rectifier bridge W1 is the input of protector; another input of rectifier bridge W1 is connected with the input of resistance R 1, rectifier bridge W2 simultaneously; be connected with fluorescence lamp starter B between the positive and negative output of rectifier bridge W1; be connected with relay J 2 and capacitor C2 in parallel between the positive and negative output of rectifier bridge W2; another input of rectifier bridge W2 is connected the output of the just very protector of diode D1 with the other end of resistance R 1, the negative pole of diode D1 simultaneously.
Embodiment 2: this protective device has two protectors; two incoming lines of AC power each a capacitor C1, C4; the input of two protectors is connected with the incoming line of AC power respectively; the output of a protector is connected between relay normally-closed contact A1, the A2; the output of another protector is connected between relay normally-closed contact A1, the A3; relay normally-closed contact A1, A2 are the contact of relay J 1; relay normally-closed contact A3 is the normally-closed contact of the relay of a protector, and the normally closed A4 of relay is the normally-closed contact of the relay of another protector.
The output of protective device is connected with the rectifier bridge input of charger, and the rectifier bridge of charger is made up of diode D3, D4, D5, D6, and the positive and negative output of rectifier bridge provides DC power supply to charger.Other and embodiment 1 omit together.
Claims (2)
1; a kind of capacitance short-circuit auto-cutout device; it is characterized in that: this protective device has a protector; AC power while and capacitor (C1); the input of protector connects; the output while of protector and the normally-closed contact (A2) of relay; the normally-closed contact of relay (A4) connects; the other end of relay normally-closed contact (A4) is the output of protective device; the other end while of relay normally-closed contact (A2) and the line bag of relay (J1); AC power connects; the other end while of the line bag of relay (J1) and the other end of capacitor (C1); relay normally-closed contact (A1) connects; relay normally-closed contact (A1) is another output of protective device by relay normally-closed contact (A3); relay normally-closed contact (A1); (A2) be the contact of relay (J1), relay normally-closed contact (A3); (A4) be the contact of relay (J2).
2; capacitance short-circuit automatic safety device according to claim 1; it is characterized in that: protector has rectifier bridge (W1); one input of rectifier bridge (W1) is the input of protector; another input while and resistance (R1) of rectifier bridge (W1); one input of rectifier bridge (W2) connects; rectifier bridge (W1) just; be connected with fluorescence lamp starter (B) between the negative output terminal; rectifier bridge (W2) just; be connected with relay (J2) and capacitor (C2) in parallel between the negative output terminal; another input while of rectifier bridge (W2) and the other end of resistance (R1); the negative pole of diode (D1) connects, the output of the just very protector of diode (D1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03259807 CN2631091Y (en) | 2003-07-22 | 2003-07-22 | Capacitor short-circuit automatic protecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03259807 CN2631091Y (en) | 2003-07-22 | 2003-07-22 | Capacitor short-circuit automatic protecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2631091Y true CN2631091Y (en) | 2004-08-04 |
Family
ID=34296204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03259807 Expired - Fee Related CN2631091Y (en) | 2003-07-22 | 2003-07-22 | Capacitor short-circuit automatic protecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2631091Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100358208C (en) * | 2005-03-25 | 2007-12-26 | 刘树林 | Capacitance short-circuit spark energy releaser |
| CN103713255A (en) * | 2013-12-12 | 2014-04-09 | 华为技术有限公司 | Circuit fault detection method, circuit fault detection system and controller |
-
2003
- 2003-07-22 CN CN 03259807 patent/CN2631091Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100358208C (en) * | 2005-03-25 | 2007-12-26 | 刘树林 | Capacitance short-circuit spark energy releaser |
| CN103713255A (en) * | 2013-12-12 | 2014-04-09 | 华为技术有限公司 | Circuit fault detection method, circuit fault detection system and controller |
| CN103713255B (en) * | 2013-12-12 | 2016-08-24 | 华为技术有限公司 | A kind of fault detection method, system and controller |
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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 |