CN2329109Y - Intelligent protective switch for transformer - Google Patents
Intelligent protective switch for transformer Download PDFInfo
- Publication number
- CN2329109Y CN2329109Y CN 98227079 CN98227079U CN2329109Y CN 2329109 Y CN2329109 Y CN 2329109Y CN 98227079 CN98227079 CN 98227079 CN 98227079 U CN98227079 U CN 98227079U CN 2329109 Y CN2329109 Y CN 2329109Y
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- CN
- China
- Prior art keywords
- circuit
- switch
- transformer
- remote
- control
- 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 intelligent protective switch for a transformer and belonging to the field of electric supply, which is suitable for a distribution transformer whose power supply is 6000V to 10000V. The utility model is characterized in that an electric air switch, a current mutual inductor, a control circuit, a reclosing circuit, an actuating mechanism and a remote control receiving circuit; a remote control is arranged outside; the electric air switch, the current mutual inductor, the control circuit, the reclosing circuit, the actuating mechanism, the remote control receiving circuit and the remote control are connected in series between a power supply transformer and a circuit;. The load is tested by the mutual inductor; the closing and the opening actions of a switch can be manually controlled or remotely controlled; the transformer for power supply can be effectively protected without damaged when short circuit or overload can be generated in a circuit for power supply.
Description
The utility model relates to the power supply field and is suitable for 6000 volts of a kind of intelligent tranformer protection switches to 10000 volts of distribution transformers of power supply.
Distribution transformer often runs into short circuit and long term overloading in running; and cause supply transformer to damage; thereby bring loss and inconvenience for industrial and agricultural production and people's lives; the distribution transformer low-voltage output is to general employing fuse protection between the supply line at present; in case blown fuse, people are difficult to restore electricity at short notice.
The purpose of this utility model provides a kind of when low-voltage circuit is short-circuited or transship, and can effectively protect the intelligent tranformer protection switch with inverse-time overcurrent protection, quick-break, reclosing and remote control deciliter switch of distribution transformer.
The purpose of this utility model is achieved through the following technical solutions, a kind of intelligent tranformer protection switch, it is characterized in that being provided with in the metal housing box electronic sky opens, current transformer, control circuit, actuator, the remote controlled transmitting circuit of reclosing circuit and remote-control receiving circuit and peripheral hardware, the end of incoming cables that electronic sky is opened the top is fixed on the casing top, the leading-out terminal that rolls off the production line of current transformer is fixed on the casing below, the reaching the standard grade of current transformer connects electronic sky and opens, comparative analysis circuit input end in the secondary output connection control circuit of current transformer, the input of the amplification driving circuit in the output connection control circuit of remote-control receiving circuit, the output of the amplification driving circuit in the control circuit and reclosing circuit connect the motor in the actuator, the reclosing circuit be attempted by electronic sky for the transformer of control circuit working power elementary and drive into after the fuse of line end; The reclosing circuit is by limit switch S, on/off switch switch S B1, SB2, and on/off switch relay K 1, K2 and diode V1, V2 constitute; Control circuit is by integrated circuit (IC) I (LM391), IC2～6 (NE555), IC7-9 (TWH8751), IC10 (CC4069), IC11 (CC4081), diode V3-31, and potentiometer W1-4, resistance R 1-13, capacitor C 1-17, relay J 1-2 constitutes; Remote-control receiving circuit is by integrated circuit (IC) 12 (LM321), IC13 (VD5029), crystal H1, and triode VT1-3, diode V32, resistance R 14-23, capacitor C 18-26, switch ZK1-8 and inductance L 1 constitute; Remote control transmitter is by housing and integrated circuit (IC) 14 (VD5026), crystal H2, and triode VT4-5, resistance R 24-27, capacitor C 27-33, switch ZK9-21, inductance L 2 and battery pack E constitute.
After the utility model is serially connected between supply transformer and the circuit; when low-voltage circuit is short-circuited or transship; through current transformer signal is sent into control circuit; after dividing relatively analysis; provide drive signal; amplifying rear drive break/starts and does connecting of servomechanism disconnection supply transformer output and circuit; break/start after short circuit or the elimination of overload phenomenon and make servomechanism with the connection between automatic recovery of power supply transformer and the circuit, the utility model effectively protects supply transformer can not damage when supply line is short-circuited or transship.
Accompanying drawing 1 is the utility model structure chart;
Accompanying drawing 3 is the utility model control circuit circuit diagram;
In the accompanying drawing: the 1st, casing, the 2nd, end of incoming cables, the 3rd, leading-out terminal, the 4th, servomechanism, the 5th, electronic sky is opened, and the 6th, instrument transformer, the 7th, control circuit, the 8th, relay K l, K2, limit switch S, close-separating brake switch S Bl, SB2, integrated circuit (IC) 1 (LM391), IC2-6 (NE555), IC7-9 (TWH8751), IC10 (CC4069), IC11 (CC4081), IC12 (LM321), IC13 (VD5029), IC14 (VD5026), diode V1-32, triode VT1-5, resistance R 1-27, capacitor C 1-33, relay J 1-2, potentiometer W1-4, crystal H1-2, inductance L 1-2, switch ZK1-21, battery pack E, transformer T.
Further specify the utility model in conjunction with the accompanying drawings and embodiments, in the rainproof metal cabinet 1 of plastic-blasting, electronic sky is set and opens 5, current transformer 6, control circuit 7, servo actuator 4, the remote control transmitter of reclosing circuit and remote-control receiving circuit and peripheral hardware, end of incoming cables 2 is fixed on the top of casing 1, and open 5 and connect with the electronic sky in the casing 1, leading-out terminal 3 is fixed on the below of casing 1, and connect with instrument transformer 6 in the casing 1, during work, the size of load reflects in the secondary output of current transformer 6, by the testing circuit check and analysis in the control circuit 7.As transformer overloading free situation; the utility model operate as normal; if overload; testing circuit carries out the inverse time lag according to the overload situation and cuts off switch, and overload capacity is fast more big more break time, and switch disconnects about 10 seconds kinds of back time-delay; the switch automatic reclosing; if transformer continues overload, protection switch cuts off once more, guarantees the transformer safe operation.The utility model can carry out manual on/off switch operation and the operation of remote control on/off switch.When manually on/off switch is operated, limit switch S normally closed (often opening) contact, pressing combined floodgate (separating brake) switch S B1 (SB2) normally closed interlock cut-offs earlier, thereby disconnected the remote control power switch, and (separating brake) switch S B1 (SB2) normally open contact closure of closing a floodgate, remote control combined floodgate (separating brake) relay K 1 (K2) is normally closed, electrical servo motor, the coil total head running of anchor ear mechanism, the motion of servounit drive circuit breaker handle, breaker closing, combined floodgate put in place, and S is normally closed for back machinery disconnection limit switch.The operation of remote control on/off switch, after pressing remote control on/off switch button, remote controller is encoded and is launched through the integrated RF reflector, when remote-control receiving circuit receives after reflector sends combined floodgate (separating brake) coding, after the identification of decoding circuit AND circuit, send combined floodgate (separating brake) electronic switch, connect close a floodgate (separating brake) relay K 1, K2 coil, (separating brake) relay that closes a floodgate gets the action of electric back, cut off closing by hand (separating brake) power supply earlier, remote control combined floodgate (separating brake) power supply is connected in the back, servomotor and the coil total head running of anchor ear mechanism.
Claims (5)
1; a kind of intelligent tranformer protection switch; it is characterized in that being provided with in the metal housing box electronic sky opens; current transformer; control circuit; actuator; the remote control transmitter of reclosing circuit and remote-control receiving circuit and peripheral hardware; the end of incoming cables that electronic sky is opened the top is fixed on the casing top; the leading-out terminal that rolls off the production line of current transformer is fixed on the casing below; the reaching the standard grade of current transformer connects electronic sky and opens; the input of the comparative analysis circuit in the secondary output connection control circuit of current transformer; the input of the amplification driving circuit in the output connection control circuit of remote-control receiving circuit; the output of the amplification driving circuit in the control circuit and reclosing circuit connect the motor in the actuator, the reclosing circuit be attempted by electronic sky for the transformer of control circuit working power elementary and drive into after the fuse of line end.
2, intelligent tranformer protection switch according to claim 1 is characterized in that the reclosing circuit by limit switch S, closes, separating brake switch S B1, SB2, closes, separating brake relay K 1, K2 and diode V1, V2 constitute.
3, intelligent tranformer protection switch according to claim 1; it is characterized in that control circuit is by integrated circuit (IC) 1 (LM391), IC2-6 (NE555), IC7-9 (TWH8751), IC10 (CC4069), IC11 (CC4081) diode V3-31; potentiometer W1-4; resistance R 1-13; capacitor C 1-17, relay J 1-2 constitutes.
4, intelligent tranformer protection switch according to claim 1 is characterized in that remote-control receiving circuit is by integrated circuit (IC) 12 (LM321), IC13 (VD5029), crystal H1; triode VT1-3, diode V32, resistance R 14-23; capacitor C 18-26 switch, ZK1-8 and inductance L 1 constitute.
5, intelligent tranformer protection switch according to claim 1 is characterized in that remote control transmitter is by housing and integrated circuit (IC) 14 (VD5026), crystal H2; triode VT4-5, resistance R 24-27, capacitor C 27-33; switch ZK9-21, inductance L 2 and battery pack E constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98227079 CN2329109Y (en) | 1998-06-12 | 1998-06-12 | Intelligent protective switch for transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98227079 CN2329109Y (en) | 1998-06-12 | 1998-06-12 | Intelligent protective switch for transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2329109Y true CN2329109Y (en) | 1999-07-14 |
Family
ID=33977467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98227079 Expired - Fee Related CN2329109Y (en) | 1998-06-12 | 1998-06-12 | Intelligent protective switch for transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2329109Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102487190A (en) * | 2010-12-01 | 2012-06-06 | 河南省电力公司南阳供电公司 | High-voltage side protection device of transformer |
| CN101895085B (en) * | 2009-05-18 | 2013-03-27 | 许昌永新电气股份有限公司 | Power supply circuit protective device and protective control method |
-
1998
- 1998-06-12 CN CN 98227079 patent/CN2329109Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101895085B (en) * | 2009-05-18 | 2013-03-27 | 许昌永新电气股份有限公司 | Power supply circuit protective device and protective control method |
| CN102487190A (en) * | 2010-12-01 | 2012-06-06 | 河南省电力公司南阳供电公司 | High-voltage side protection device of transformer |
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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 |