CN2195149Y - Solid phase failure protector - Google Patents
Solid phase failure protector Download PDFInfo
- Publication number
- CN2195149Y CN2195149Y CN 94241859 CN94241859U CN2195149Y CN 2195149 Y CN2195149 Y CN 2195149Y CN 94241859 CN94241859 CN 94241859 CN 94241859 U CN94241859 U CN 94241859U CN 2195149 Y CN2195149 Y CN 2195149Y
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- Prior art keywords
- circuit
- utility
- model
- voltage
- solid phase
- Prior art date
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- Expired - Fee Related
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- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model relates to a solid phase failure protector, which belongs to the emergency protective circuit device and comprises a casing and a working circuit arranged in the casing. The utility model is characterized in that the casing is provided with five connecting poles, the working circuit comprises a signal detection circuit, a signal analysis circuit and an executive control circuit connected by a resistor, a capacitor, a diode, a voltage-stabilizing diode, an indicator, an integrated circuit and a bidirectional controllable silicon. The utility model has the advantages of wide voltage range in use, no contact spark or jitter, high response speed, low power consumption, small size, simple installation and favorable application.
Description
The novel solid phase failure protector belongs to the emergency protective circuit device.
Now, the application that exchanges three-phase power is very general, and three-phase power load (as three phase electric machine, three-phase rectifier transformer etc.) is omnipresent especially.Especially the use of three-phase low-tension motor is very extensive especially.Since voltage transformer high and low pressure side fuse melting, switch and contactor loose contact, and the disconnecting link that motor uses, contacts of contactor corrosion or the like can both cause phase shortage.At present, the thermal relay of use can reflect phase-deficient operation indirectly, but the operate time of itself is oversize and centrifugal pump is too big.Existing phase failure protector also adopts the induction by current formula mostly, and wiring is comparatively complicated, and volume is big, the cost height, and power consumption is also high, and is simultaneously very unstable, uses extremely inconvenient.
The utility model is a kind of novel solid phase failure protector that overcomes above-mentioned defective and design.
The utility model is achieved like this: it mainly comprises housing and the operating circuit that is fixed in the housing.5 binding posts are arranged on the housing, and operating circuit comprises signal deteching circuit, signal evaluation circuit and the execution control circuit that is connected into by corresponding resistance, electric capacity, diode, voltage-stabiliser tube, indicator light, integrated circuit, bidirectional triode thyristor.Its operation principle is: when three-phase input just often, the output no signal voltage of signal deteching circuit, signal evaluation circuit output high potential was carried out control circuit and was connected this moment; When the arbitrary phase phase failure of three-phase input end, the output of signal deteching circuit has signal voltage, and this moment, the output of signal evaluation circuit was an electronegative potential, carries out control circuit and disconnects.
1 couple of embodiment of the present utility model is described in detail below in conjunction with accompanying drawing:
Figure one is an operating circuit schematic diagram of the present utility model.
By corresponding resistor R
2, R
3, R
4, R
5, diode D
2, capacitor C
1, voltage-stabiliser tube DW
1Connect into signal deteching circuit 1; By corresponding resistor R
1, R
6, diode D
1, capacitor C
2, voltage-stabiliser tube DW
2, capacitor C
3, beacon lamp LED and IC integrated package (present embodiment use be import CMOS integrated circuit) connect into signal evaluation circuit 2; By bidirectional triode thyristor BG connect into carry out control circuit 3 with above-mentioned signal deteching circuit 1, signal evaluation circuit 2, carry out control circuit 3 and be linked in sequence as figure, be fixed in the housing, 5 binding posts are set on housing, promptly become the solid phase failure protector.When three phase mains input just often, the output no signal voltage of signal deteching circuit 1, the negative terminal current potential of IC is zero in the signal evaluation circuit 2, the positive terminal voltage of IC is higher than negative terminal, this moment, IC output ended, and carried out bidirectional triode thyristor BG conducting in the control circuit 3; When the three phase mains phase failure, output at signal deteching circuit 1 produces the unbalance voltage signal, IC negative terminal current potential is higher than positive terminal potential in the signal evaluation circuit 2 at this moment, and the IC output is " 0 " state over the ground, and the bidirectional triode thyristor BG that carries out in the control circuit 3 disconnects.
The Specifeca tion speeification of present embodiment is as follows:
1, specified nominal voltage 380V, output end voltage 220V.
2, output-current rating 1A(2A, 3A), conduction voltage drop≤1V.
3, phase failure control action time＜30ms.
4, the output Control current amounts to input＜1mA, total power consumption＜0.2w.
5, operating voltage range: 380V ± 20% all can operate as normal.
6, output and input insulation＞10M Ω are alternate＞1M Ω.
7, volume: less than 35 * 30 * 15mm
The utility model can be when phase shortage or the serious imbalance of three-phase voltage, the protected equipment of fast shut-off.Wiring is simple, need not change the control circuit of original equipment, and the working voltage wide ranges adopts noncontacting switch, and all elements are curable, do not have contact spark and shake, and volume is little, can use in various environment.Adopt integrated circuit, the reliability height, power consumption is extremely low, stable performance.Components and parts are simple, with low cost should promoting the use of.
Claims (1)
1, a kind of novel solid phase failure protector; comprise housing and be fixed in the interior operating circuit of housing; it is characterized in that having on the housing 5 binding posts, operating circuit comprises signal deteching circuit, signal evaluation circuit and the execution control circuit that is connected into by corresponding resistor, electric capacity, diode, voltage-stabiliser tube, indicator light, integrated circuit and bidirectional triode thyristor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94241859 CN2195149Y (en) | 1994-05-21 | 1994-05-21 | Solid phase failure protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94241859 CN2195149Y (en) | 1994-05-21 | 1994-05-21 | Solid phase failure protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2195149Y true CN2195149Y (en) | 1995-04-19 |
Family
ID=33848548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94241859 Expired - Fee Related CN2195149Y (en) | 1994-05-21 | 1994-05-21 | Solid phase failure protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2195149Y (en) |
-
1994
- 1994-05-21 CN CN 94241859 patent/CN2195149Y/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 |