CN2335258Y - Three-phase power source voltage type phase loss protector - Google Patents
Three-phase power source voltage type phase loss protector Download PDFInfo
- Publication number
- CN2335258Y CN2335258Y CN 97246418 CN97246418U CN2335258Y CN 2335258 Y CN2335258 Y CN 2335258Y CN 97246418 CN97246418 CN 97246418 CN 97246418 U CN97246418 U CN 97246418U CN 2335258 Y CN2335258 Y CN 2335258Y
- Authority
- CN
- China
- Prior art keywords
- phase
- work mechanism
- procuratorial work
- actuator
- iii
- 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
Links
Images
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model relates to a three-phase power supply voltage type open-phase protector. The utility model is provided with a three-phase load power supply input part, a detection mechanism, an actuating mechanism, an open-phase indicating part and an input and output part, the detection mechanism is respectively connected with the three-phase load power supply input part and the actuating mechanism, and the actuating mechanism is connected with the input and output part and the open-phase indicating part. Therefore, when a three-phase power supply generates an open-phase accident, the utility model can cut off timely the power supply and can not damage electric appliances, and besides, the utility model has a wide protective range, etc.
Description
The utility model relates to a kind of power consumption equipment protector, particularly a kind of three-phase mains voltage formula open phase protector, and it mainly is applicable to the three-phase power consumption equipment, is particularly useful for the open-phase protection of motor, electric heater, distribution box, switchboard, power distribution station etc.
What the open-phase protection of three phase mains of the prior art mainly adopted is the protection structure of bimetal thermal relay; its circuit theory as shown in Figure 1 and Figure 2; when three phase mains input terminal 1 ', 2 ', 3 ' time; press knob 10 '; as a result main line contactor 9 '; be used for the normally opened contact 8 of self-insurance ' and coil 6 ' action, power supply through bimetal leaf 4 ', make motor 7 ' must electric work.And when three phase mains phase shortage input terminal go into 1 ', 2 ', 3 ' time, press knob 10 ', as a result contactor 9 ', normally opened contact 8 ' and coil 6 ' action, power supply process bimetal leaf 4 ', make motor 7 ' electric work, since the phase shortage electric current greater than bimetal leaf 4 ' rated current, through certain hour, bimetal leaf 4 ' heating, distortion promote thermal relay 5 ' action, and the result makes contactor 9 ' dead electricity, normally opened contact 8 ' and coil 6 ' action, motor 7 ' dead electricity is quit work.Because the structure that this protection is adopted is the current mode open-phase protection, so it remains in actual use in following shortcoming: 1, when the three phase mains phase shortage, can not cut off the electricity supply rapidly, but will pass through certain hour, could cut off the power supply; 2, when the user when selecting this kind protected mode, if select for use improperly, can damage electric equipment, weight person can cause fire; 3, its protection range is narrower, can only make single electric motor protecting, can't protect phase shortages such as electric heater, distribution box, switchboard and power distribution stations, simultaneously, will consider the rated current of this protector when selecting for use; 4, production technology is complicated.
The purpose of this utility model is to overcome existing above-mentioned deficiency in the prior art, and the three-phase mains voltage formula open phase protector that can cut off the electricity supply in time rapidly when a kind of reasonable in design, applied widely, three phase mains phase shortage are provided.
The purpose that the utility model proposed can be achieved through the following technical solutions: this three-phase mains voltage formula open phase protector; comprise shell; binding post; switch; threephase load power input part branch; input and phase shortage indicating section; its design feature is also to have designed procuratorial work mechanism and actuator; procuratorial work mechanism divides with the threephase load power input part respectively and actuator links to each other; actuator links to each other with input and phase shortage indicating section again; procuratorial work mechanism is made up of by starwise disposition procuratorial work mechanism electric capacity and procuratorial work mechanism resistance; actuator mainly comprises resistance; transformer; the ballast diode; low-voltage relay coil and relay coil and switch, and by resistance actuator is linked to each other with procuratorial work mechanism.
Procuratorial work of the present utility model mechanism also can only be made up of by starwise disposition procuratorial work mechanism resistance.
Also available triode of low-voltage relay coil in the utility model actuator or integrated package are replaced.
The utility model compared with prior art has the following advantages and effect: 1, owing to adopted voltage-type protection structure, when the three phase mains phase shortage, can cut off the electricity supply in time rapidly, can not damage electric equipment during use, but break off the factor of all fire hazards; 2, protection range is wide: can both protect for any three-phase power consumption equipment, simultaneously, not need to consider factors such as power and rated current when selecting for use; 3, production technology is simple.
Description of drawings is as follows:
Fig. 1 is the major loop schematic diagram of bimetal thermal relay structure in the prior art.
Fig. 2 is the control loop schematic diagram of bimetal thermal relay structure in the prior art.
Fig. 3 is a product schematic perspective view of the present utility model.
Fig. 4 is a structure block diagram of the present utility model.
Fig. 5 is an electric wiring schematic diagram of the present utility model.
Following the utility model will be described in further detail in conjunction with the accompanying drawings and by embodiment.
Referring to Fig. 3, the utility model mainly is made up of binding post 11, shell 12, fixed head 13, switch 15, light-emitting diode 14 and inner electric wiring, binding post 11 is installed on the shell 12, and be connected with the electric wiring of inside, have fixing hole 13-1 on the fixed head 13, so that can fixedly mount in use; When the three phase mains phase shortage, can show by luminous tube 14.
Referring to Fig. 4, Fig. 5, electric wiring of the present utility model comprises threephase load power input part branch I, procuratorial work mechanism II, actuator's III, input IV and phase shortage indicating section V; Threephase load power input part branch I comprises terminals 1,2,3; Procuratorial work mechanism II is made up of by starwise disposition procuratorial work mechanism electric capacity 16,17,18 and procuratorial work mechanism resistance 19,20,21, procuratorial work mechanism II also can be made up of by starwise disposition procuratorial work mechanism resistance 19,20,21, actuator's III comprises resistance 22, transformer 23, ballast diode 24, low-voltage relay coil 25, low-voltage relay normally opened contact 26, relay coil 27, relay normally open contact 28 and switch 15, and actuator's III is linked to each other with procuratorial work mechanism II, but wherein also triode or integrated package replacement of low-voltage relay coil 25 by resistance 22; The input IV is made up of relay normally-closed contact 29, signal input part 30 and output 31; Phase shortage indicating section V is made up of phase shortage resistance 34 and light-emitting diode 14.
When threephase load power supply input terminal 1,2,3, the time, the three phase mains balance of procuratorial work mechanism II, power supply does not produce voltage drop when importing power supply 23 through resistance 22, transformer input 23-1 and actuator, transformer output 32-2 does not produce induced voltage, ballast diode 24 no direct voltages, actuator's III must not, low-voltage relay normally opened contact 26 is failure to actuate, relay coil 27 must not as a result, relay normally open contact 28 and normally-closed contact 29 are failure to actuate, light-emitting diode 14 must not be electric, and light-emitting diode 14 does not work; When signal of signal input part 30 inputs, signal output part 31 just has an output signal, makes threephase load get electric operate as normal.
When threephase load power supply phase shortage input terminal 1,2,3, the three phase mains imbalance of procuratorial work mechanism II, power supply produces a voltage drop when importing power supply 32 through resistance 22, transformer input 23-1 and actuator, transformer 23 produces an induced voltage at output 23-2, make ballast diode 24 that a direct current voltage be arranged, actuator's III gets, 26 actions of low-voltage relay normally opened contact, the result gets relay coil 27, relay normally open contact 28 and normally-closed contact 29 actions, light-emitting diode 14 gets electric, and light-emitting diode 14 is shinny; When signal of signal input part 30 inputs, signal output part 31 non-output signals, threephase load must not be electric, quits work.
In addition, when relay coil 27 when electric, relay normally open contact 28 actions make relay coil 27 self-insurances, Push switch 15 zero clearings of maintenance back make relay coil 27 return to original state again.
When signal input part 31 no signals were imported, threephase load must not be electric, do not work all the time.
In the present embodiment, procuratorial work mechanism electric capacity 16,17,18 is 0.01 microfarad/630 volt; Procuratorial work mechanism resistance 19,20,21 is 630,000 bowls, 1/8 watt; Resistance 22 is 51 ohm, 1/8 watt; Transformer input 23-1 is 220 volts, and transformer output 23-2 is 15 volts; Low-voltage relay coil 25 is 12 volts of direct currents; Relay coil 27 is a midget relay; Relay normally open contact 28 is for exchanging 220 volts; Phase shortage resistance 34 is 100 kilo-ohms, 3 watts; Actuator's input power supply 32 and actuator's out-put supply 33 are for exchanging 220 volts.
Claims (3)
1; a kind of three-phase mains voltage formula open phase protector; comprise shell; binding post; switch; threephase load power input part branch; input and phase shortage indicating section; it is characterized in that: also design has procuratorial work mechanism (II) and actuator's (III); procuratorial work mechanism (II) links to each other with threephase load power input part branch (I) and actuator's (III) respectively; actuator's (III) links to each other with input (IV) and phase shortage indicating section (V) again; procuratorial work mechanism (II) is by procuratorial work mechanism electric capacity (16); (17); (18) and procuratorial work mechanism resistance (19); (20); (21) form by starwise disposition; actuator's (III) mainly comprises resistance (22); transformer (23); ballast diode (24); low-voltage relay coil (25); and relay coil (27) and switch (15), and actuator's (III) is linked to each other with procuratorial work mechanism (II) by resistance (22).
2, three-phase mains voltage formula open phase protector as claimed in claim 1 is characterized in that: procuratorial work mechanism (II) also can only be made up of by starwise disposition procuratorial work mechanism resistance (19), (20), (21).
3, three-phase mains voltage formula open phase protector as claimed in claim 1 is characterized in that: also available triode of low-voltage relay coil (25) or integrated package are replaced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97246418 CN2335258Y (en) | 1997-12-02 | 1997-12-02 | Three-phase power source voltage type phase loss protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97246418 CN2335258Y (en) | 1997-12-02 | 1997-12-02 | Three-phase power source voltage type phase loss protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2335258Y true CN2335258Y (en) | 1999-08-25 |
Family
ID=33954615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97246418 Expired - Fee Related CN2335258Y (en) | 1997-12-02 | 1997-12-02 | Three-phase power source voltage type phase loss protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2335258Y (en) |
-
1997
- 1997-12-02 CN CN 97246418 patent/CN2335258Y/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202631598U (en) | Distribution transforming monitoring metering box | |
| CN203242926U (en) | Low-voltage power distribution cabinet with residual current protection function | |
| CN2335258Y (en) | Three-phase power source voltage type phase loss protector | |
| CN217332690U (en) | Power distribution equipment power-on test device and power-on test equipment | |
| CN104883122B (en) | There is the grid-connected intellective protector of distributed photovoltaic of pressure automatic switching-in function with inspection | |
| CN203039358U (en) | An AC brake opening and closing self-holding circuit | |
| CN2110914U (en) | Dual-power auto-interlocking switching device | |
| CN219142983U (en) | Power consumption information acquisition terminal joint debugging device | |
| CN2200248Y (en) | Automatic protector of low voltage electrifield wire netting controlled by computer | |
| CN2200185Y (en) | Terminal box for single phase electric energy meter | |
| CN87214207U (en) | Domestic acoustooptic alarm distribution box with automatic power-limiting protective apparatus | |
| CN211655746U (en) | Terminal intelligent power saving device of distribution network | |
| CN212811296U (en) | Electric operation control device | |
| CN2135194Y (en) | Voltage-loss tripping device for high-voltage electrical appliance | |
| CN201854040U (en) | Intelligent low-voltage power capacitor | |
| CN2350897Y (en) | Quick cut-out small cut-out - leakage protection socket | |
| CN2304997Y (en) | Automatic phase-off protective knife-blade switch | |
| CN2231830Y (en) | Double-magnetic starter | |
| CN2189783Y (en) | Three-phase protecting AC contactor | |
| CN2311853Y (en) | Phase-defect protective connecting device | |
| CN2162731Y (en) | Protector for motor | |
| CN2565183Y (en) | Under-voltage open-phase monitor | |
| CN2383261Y (en) | Power-off protector for three phase asynchronous motor | |
| CN206849760U (en) | A kind of vacuum circuit breaker | |
| CN205428824U (en) | Outdoor interchange high pressure permanent magnet vacuum circuit breaker |
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 |