CN2284449Y - Fusing protector - Google Patents
Fusing protector Download PDFInfo
- Publication number
- CN2284449Y CN2284449Y CN 96220007 CN96220007U CN2284449Y CN 2284449 Y CN2284449 Y CN 2284449Y CN 96220007 CN96220007 CN 96220007 CN 96220007 U CN96220007 U CN 96220007U CN 2284449 Y CN2284449 Y CN 2284449Y
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- Prior art keywords
- circuit
- voltage
- fuse
- resistance
- connects
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- Expired - Fee Related
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Abstract
The utility model relates to a fusing protector, which relates to a device for monitoring and controlling the running state of a fuse used in a three phase or multiphase electric line, wherein, two joints in each phase circuit are respectively connected with the wire feeding end and the load end of power supply of a triple pole fuse and are combined into two output ends through a photoelectric coupler, and two output ends are respectively connected with a signal amplifier, regulated power supply and a luminous signal circuit. When a fuse breaks, a relay connected with the luminous signal circuit acts after the fuse break is identified by voltage, and the relay sends out light to send out an alarm, relay contacts act, a control circuit which controls the electromagnetic switch of a main circuit is switched to cut off the electromagnetic switch of the main circuit, three-phase load is protected from the damage of phase failure running, and electric equipment can be protected to operate safely. The utility model has the advantages of simple structure and reliability.
Description
The utility model relates to the device that a kind of running status to employed fuse in the electric wiring is monitored and controlled, fuse protection device.
With fuse; fuse switch or fuse combined electric apparatus as in protection three-phase of electrical equipment or the multiphase load circuit when the line failure, should send signal after the fuse blows, so that in time change at once; prevent the phase-deficient operation fault of multiphase load, the safe operation of protection power consumption equipment.
The patent No. 93233147.5 " fuse blows alarm " just provides a kind of fault alarm indication that is applicable to as low-tension fuse, but its structure is simple not enough, also is not suitable for being used for the circuit of polyphase system.
The purpose of this utility model is to provide a kind of fuse protection device, and its simple in structure can be used for monitors and controls the running status of employed fuse in three-phase or the multiphase electrical circuit.
The utility model is achieved in that two joints in its every circuitry phase of fuse protection device connect the power inleting terminal and the load end of three utmost point fuses respectively; two outputs are merged in every coupling and isolation its output of back by photoelectrical coupler; respectively with by resistance; electric capacity; the signal amplification circuit that triode is formed reaches by resistance; electric capacity; bridge rectifier; the voltage-stabilized power supply circuit that voltage-stabiliser tube is formed and by light-emitting diode; the luminous signal circuit that resistance is formed connects; if there is fuse blows after voltage is differentiated, to make the actuating of relay that is connected with the luminous signal circuit; and make the luminous alarm of luminous signal circuit; the relay contact action; the control circuit of conversion and control main circuit electromagnetic switch; the main circuit electromagnetic switch is disconnected, and the infringement of phase-deficient operation is avoided in the protection threephase load.
Fig. 1. three-phase circuit uses electrical block diagram of the present utility model.
Fig. 2. line map of the present utility model.
Below in conjunction with accompanying drawing embodiment of the present utility model is further described.
Resistance R 1, R2, R3 are that current-limiting resistance is isolated and the signal coupling as circuit.
Four end photoelectrical coupler V4, V5, V6 have suitable operating current under regulation control voltage.
One end of capacitor C 1, resistance R 4 parallel connections is connected with capacitor C 2, voltage-stabiliser tube V8 in parallel through bridge rectifier V7, and termination contact in addition 31 in parallel constitutes capacitance decompression and voltage-stabilized power supply circuit.(also can adopt the transformer step-down to replace capacitance decompression figure to omit)
Resistance R 5 is connected with the base stage of capacitor C 3, triode V9, the emitter of V9 is connected with the base stage of triode V10, the emitter of V10 is connected with the end in addition of capacitor C 3 and the end of voltage-stabiliser tube V8, and the collector electrode of V9, V10 connects, and connects and composes signal amplification circuit with relay one end again.
Resistance R 6 is connected with light-emitting diode V12 and diode V11 formation in parallel luminous signal circuit again.
J is the output circuit relay.
Contact 11; 21; 31 meet the power inleting terminal and the diode V1 of three utmost point fuses respectively; V2; V3; four end photoelectrical coupler V4; V5; the end of V6; contact 13; 23; 33 connect the load end of corresponding each utmost point fuse; to detect the voltage at each utmost point fuse two ends; and respectively by resistance R 1; R2; R3 and diode V1; V2; V3 and four end photoelectrical coupler V4; V5; the end in addition of V6 connects; four end photoelectrical coupler V4; V5; the output of V6 be merged into two outputs respectively with the R5 of signal amplification circuit and the V8 of voltage-stabilized power supply circuit, the R6 of luminous signal circuit connects and carries out voltage and differentiate and constitute the fuse protection device.
During use; the circuit fault-free; fuse is intact; the voltage drop at two ends is generally only tens to hundreds of millivolt; not enough so that four end photoelectrical coupler V4; V5; V6 enters operating state; triode V9 then; not conducting of V10; relay is failure to actuate; if after a utmost point fuse hinders fusing for some reason, as contact 11; 13 detect this utmost point fuse recovery voltage at two ends being disconnected (via load circuit), make the light-emitting component on the former limit of V4 flow through operating current; the light-sensitive element resistance of secondary reduces; thereby make V9 by the voltage discriminating; V10 has suitable base current, makes V9; relay J energising after the V10 conducting, the luminous warning of light-emitting diode V12; the contact action; the control circuit of conversion and control main circuit electromagnetic switch disconnects the main circuit electromagnetic switch, and the infringement of phase-deficient operation is avoided in the protection threephase load.After the transposing of the fuse after the fusing, can work on again.
If this protector will be applied in the polyphase circuit, only need to increase the number in parallel of photoelectrical coupler this moment, as six-phase rectifier circuit, just needs six four end photoelectrical couplers in parallel, and all the other circuits are constant just can be used.
The utility model is compared with prior art: the electronic structure that adopts four end photoelectrical couplers because of this protector Realize the potential isolation of three-phase system main circuit and control circuit, its circuit is simple, easy to be installed, also can lead to Cross the scope of application that the number in parallel that increases photoelectrical coupler enlarges it, such as six four end photoelectrical couplers in parallel Just can apply in the Six phase Rectifier System and use.
Claims (3)
1. fuse protection device; two joints in its every circuitry phase connect the power inleting terminal and the load end of three utmost point fuses respectively; it is characterized in that every by photoelectrical coupler coupling and isolate its output of back and merge into two outputs, reach the voltage-stabilized power supply circuit of forming by resistance, electric capacity, bridge rectifier, voltage-stabiliser tube with the signal amplification circuit of forming by resistance, electric capacity, triode respectively and be connected with the luminous signal circuit of forming by light-emitting diode, resistance.
2. protector according to claim 1; it is characterized in that capacitor C 1; one end of resistance R 4 parallel connections is through bridge rectifier V7 and capacitor C 2 in parallel; voltage-stabiliser tube V8 connects; termination contact in addition 31 in parallel constitutes voltage-stabilized power supply circuit; resistance R 5 and capacitor C 3; the base stage of triode V9 connects; the emitter of V9 is connected with the base stage of triode V10; the emitter of V10 is connected with the end in addition of capacitor C 3 and the end of voltage-stabiliser tube V8; V9; the collector electrode of V10 connects; connect and compose signal amplification circuit with relay one end again, resistance R 6 is connected with light-emitting diode V12 and diode V11 formation in parallel luminous signal circuit again.
3. protector according to claim 1; it is characterized in that contact 11; 21; 31 meet the power inleting terminal and the diode V1 of three utmost point fuses respectively; V2; V3; four end photoelectrical coupler V4; V5; the end of V6; contact 13; 23; 33 connect the load end of corresponding each utmost point fuse; to detect the voltage at each utmost point fuse two ends; and respectively by resistance R 1; R2; R3 and diode V1; V2; V3 and four end photoelectrical coupler V4; V5; the end in addition of V6 connects; four end photoelectrical coupler V4; V5; the output of V6 be merged into two outputs respectively with the R5 of signal amplification circuit and the V8 of voltage-stabilized power supply circuit, the R6 of luminous signal circuit connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96220007 CN2284449Y (en) | 1996-07-30 | 1996-07-30 | Fusing protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96220007 CN2284449Y (en) | 1996-07-30 | 1996-07-30 | Fusing protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2284449Y true CN2284449Y (en) | 1998-06-17 |
Family
ID=33900448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96220007 Expired - Fee Related CN2284449Y (en) | 1996-07-30 | 1996-07-30 | Fusing protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2284449Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100507757C (en) * | 2004-06-03 | 2009-07-01 | 三星电子株式会社 | Fuser-controlling apparatus for generating a power synchronization signal and detecting power voltage |
| CN102097261A (en) * | 2010-12-30 | 2011-06-15 | 易事特电力***技术有限公司 | Fuse detection circuit |
-
1996
- 1996-07-30 CN CN 96220007 patent/CN2284449Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100507757C (en) * | 2004-06-03 | 2009-07-01 | 三星电子株式会社 | Fuser-controlling apparatus for generating a power synchronization signal and detecting power voltage |
| CN102097261A (en) * | 2010-12-30 | 2011-06-15 | 易事特电力***技术有限公司 | Fuse detection circuit |
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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 |