CN2299412Y - Energy saving overcurrent protecting device - Google Patents
Energy saving overcurrent protecting device Download PDFInfo
- Publication number
- CN2299412Y CN2299412Y CN 97201169 CN97201169U CN2299412Y CN 2299412 Y CN2299412 Y CN 2299412Y CN 97201169 CN97201169 CN 97201169 CN 97201169 U CN97201169 U CN 97201169U CN 2299412 Y CN2299412 Y CN 2299412Y
- Authority
- CN
- China
- Prior art keywords
- relay
- power supply
- contactor
- secondary coil
- energy saving
- 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 relates to an energy saving over-current protecting device which is composed of a mutual inductance coil L, relays J1 and J2, an alternating current contactor AN and capacitors C1 and C2, wherein, the mutual inductance coil of the utility model is used as a current inductor of a power supply circuit to control the alternating current contactor to shut off a power supply when a circuit overloads, so that the purpose of over-current protection is achieved. The utility model also utilizes the method that both ends of a load are in parallel connected with the capacitors to improve the load characteristic and achieve the function of energy saving.
Description
The utility model relates to a kind of circuit over-current protection device.
At present, in the mains-supplied net, various overcurrent protective device kinds are more, but cost is low, and the electricity of application is general should belong to traditional heat of manufacturing with lead material and melt fuse.When occur in the circuit because of short circuit or load excessive when causing the electric current off-rating, melt silk just can melt disconnected, thereby cut off the electricity supply, to reach the purpose of protection power consumption equipment and supply network.In use,, and replace heat to melt fuse, cause supply network or power consumption equipment when overcurrent occurring, cause the damageability accident with other wire usually owing to the basic general knowledge of understanding electricity under the electric consumer or the big electrical equipment of loading of use.
The purpose of this utility model is to provide a kind of economy, energy-saving overcurrent protective device.
The utility model is made up of mutual inductor L, relay J 1, J2, A.C. contactor AN and capacitor C 1, C2; The elementary L1 of mutual inductor is serially connected on the phase line of power supply; Secondary coil L3 two ends are connected to relay J 1, and 1 end of secondary coil L3 is connected with the normally closed fixed contact 4 of relay J 1-1, and 2 ends of secondary coil L3 are connected with the above-mentioned phase line of power supply; The fixed contact 5 of relay J 1-1 is connected with another phase line of power supply; The moving contact 3 of relay J 1-1 is connected with 2 ends of secondary coil L3 by capacitor C 2; The two ends of secondary coil L2 also are connected to capacitor C 1 and relay J 2, the normally-closed contact J2-1 of relay J 2 is with after A.C. contactor AN is connected in series, be connected between two phase lines of power supply, two contact A N1-1, the AN1-2 of A.C. contactor AN are serially connected in respectively on two phase lines of power supply, above-mentioned mutual inductor L is as the electric current perceptron of supply line, when electric current in the supply line during greater than a certain rated value, relay J 2 work, normally-closed contact J2-1 discharges, and A.C. contactor AN discharges its contact A N1-1, AN1-2 and cuts off power supply; When having electric current to flow through in the supply line, relay J 1 work, the J1-1 action makes capacitor C 2 be attempted by the load two ends, to improve the characteristic of load.
The utility model adopts instrument transformer and contactor to form overcurrent protective device, can avoid in the traditional overcurrent protective device, and the accident that causes because of the fuse improper use, and can prevent the high-power electric appliance that uses violating the regulations effectively.
The drawing explanation:
Accompanying drawing is circuit theory diagrams of the present utility model.
The number of primary turns of instrument transformer is adjustable in the utility model, can determine the load current value of overcurrent protection by the adjustment of the number of turn.When occurring surpassing rated current in the supply line, relay J 2 work discharge its normally opened contact J2-1, make A.C. contactor AN dead electricity, and its contact A N1-1, AN1-2 disconnect, and play the purpose of protection power consumption equipment.When relay J 1 has electric current in supply line, electric work, make 3,5 terminations of its contact J1-1 logical, with capacitor C 2 and at the load two ends,, reach the purpose of economize on electricity to improve load characteristic.
Claims (1)
- A kind of energy-saving overcurrent protective device of being made up of mutual inductor L, relay J 1, J2, A.C. contactor AN and capacitor C 1, C2 is characterized in that: the elementary L1 of mutual inductor is serially connected on the phase line of power supply; Secondary coil L3 two ends are connected to relay J 1, and 1 end of secondary coil L3 is connected with the normally closed fixed contact 4 of relay J 1-1, and 2 ends of secondary coil L3 are connected with the above-mentioned phase line of power supply; The fixed contact 5 of relay J 1-1 is connected with another phase line of power supply; The moving contact 3 of relay J 1-1 is connected with 2 ends of secondary coil L3 by capacitor C 2; The two ends of secondary coil L2 also are connected to capacitor C 1 and relay J 2, the normally-closed contact J2-1 of relay J 2 is with after A.C. contactor AN is connected in series, be connected between two phase lines of power supply, after the A.C. contactor AN serial connection, be connected between two phase lines of power supply, two contact A N1-1, the AN1-2 of A.C. contactor AN are serially connected in respectively on two phase lines of power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97201169 CN2299412Y (en) | 1997-02-04 | 1997-02-04 | Energy saving overcurrent protecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97201169 CN2299412Y (en) | 1997-02-04 | 1997-02-04 | Energy saving overcurrent protecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2299412Y true CN2299412Y (en) | 1998-12-02 |
Family
ID=33922647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97201169 Expired - Fee Related CN2299412Y (en) | 1997-02-04 | 1997-02-04 | Energy saving overcurrent protecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2299412Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101724824B (en) * | 2008-10-31 | 2012-03-21 | 中国科学院沈阳科学仪器研制中心有限公司 | Over-current protection device for physical vapor deposition heating system |
-
1997
- 1997-02-04 CN CN 97201169 patent/CN2299412Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101724824B (en) * | 2008-10-31 | 2012-03-21 | 中国科学院沈阳科学仪器研制中心有限公司 | Over-current protection device for physical vapor deposition heating system |
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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 |