CN203289076U - Default phase protection device - Google Patents
Default phase protection device Download PDFInfo
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- CN203289076U CN203289076U CN2013201881958U CN201320188195U CN203289076U CN 203289076 U CN203289076 U CN 203289076U CN 2013201881958 U CN2013201881958 U CN 2013201881958U CN 201320188195 U CN201320188195 U CN 201320188195U CN 203289076 U CN203289076 U CN 203289076U
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Abstract
The utility model relates to the field of three-phase protection devices, and especially relates to a default phase protection device. The input terminal of a coil which is arranged in a first intermediate relay comprised in the default phase protection device is connected with a U phase, and the output terminal of the coil is connected with a null line. The input point of the first intermediate relay is connected with the U phase, and the output point thereof is connected with the input point of a second intermediate relay. The input terminal of a coil which is arranged in the second intermediate relay is connected with a V phase, and the output terminal is connected with the null line. The output point of the second intermediate relay is connected with the input point of a third intermediate relay. The input terminal of a coil which is arranged in the third intermediate relay is connected with a W phase, and the output terminal is connected with the null line. The output point of the third intermediate relay is connected with a first control point arranged in an alternating-current contactor. The three input points of the alternating-current contactor are connected with the U phase, the V phase and the W phase respectively. The default phase protection device is capable of detecting the default phase in time and breaking power supply of electric equipment, so that safety of the electric equipment is improved.
Description
Technical field
The utility model relates to three-phase protective device field, relates in particular to a kind of phase-lacking protective device.
Background technology
Residual current circuit breaker and A.C. contactor are adopted in the Electrical Well of most areas, timber processing stand, rice and flour processing etc. at present.And these electric devices can only play a protective role to overload operation, and for phase shortage, do not shield.When any phase phase shortage in three-phase, existing protective device can't disconnect the power supply of power consumption equipment, and the three-phase electricity of phase shortage can cause damage to power consumption equipment.
The utility model content
The purpose of this utility model is to provide a kind of phase-lacking protective device, to address the above problem.
A kind of phase-lacking protective device, comprise the first auxiliary relay, the second auxiliary relay, the 3rd auxiliary relay, A.C. contactor; The input of the coil that arranges in described the first auxiliary relay is connected with U, and output is connected with zero line; The input point of described the first auxiliary relay is connected with U, and output point is connected with the input point of described the second auxiliary relay; The input of the coil that arranges in described the second auxiliary relay is connected with V, and output is connected with zero line; The output point of described the second auxiliary relay is connected with the input point of the 3rd auxiliary relay; The input of the coil that arranges in described the 3rd auxiliary relay is connected with W, and output is connected with zero line; The output point of described the 3rd auxiliary relay is connected with the first control point that described A.C. contactor arranges; Three input points of described A.C. contactor are connected with U phase, V phase, W respectively.
Compared with prior art; the advantage of the utility model embodiment is: when any one lacks mutually; for example U lacks mutually; because the input of the coil that arranges in the first auxiliary relay is connected with U; output is connected with zero line; the coil blackout in the first auxiliary relay; in the time of coil blackout; input point in the first auxiliary relay and output point disconnect; thereby the first control point that makes A.C. contactor does not have signal of telecommunication input; A.C. contactor disconnects output circuit, thereby disconnects the way circuit of power consumption equipment, and power consumption equipment is played a protective role.
Description of drawings
Fig. 1 is the electrical schematic diagram of the phase-lacking protective device of the utility model embodiment;
Fig. 2 is the circuit theory diagrams of the phase-lacking protective device of the utility model embodiment.
Embodiment
Also by reference to the accompanying drawings the utility model is described in further detail below by specific embodiment.
A kind of phase-lacking protective device, comprise the first auxiliary relay 105, the second auxiliary relay 106, the 3rd auxiliary relay 107, A.C. contactor 109 as shown in Figure 1; The input of the coil of described the first auxiliary relay 105 interior settings is connected with U phase 103, and output is connected with zero line 104; The input point of described the first auxiliary relay 105 is connected with U phase 103, and output point is connected with the input point of described the second auxiliary relay 106.
The input of the coil of described the second auxiliary relay 106 interior settings is connected with V phase 102, and output is connected with zero line 104; The output point of described the second auxiliary relay 106 is connected with the input point of the 3rd auxiliary relay 107.
The input of the coil of described the 3rd auxiliary relay 107 interior settings is connected with W phase 101, and output is connected with zero line 104; The output point of described the 3rd auxiliary relay 107 is connected with the first control point 108 that described A.C. contactor 109 arranges; Three input points of described A.C. contactor 109 are connected with U phase 103, V phase 102, W phase 101 respectively.
When any one lacks mutually; for example U 103 lacks mutually; because the input of the coil of the first auxiliary relay 105 interior settings is connected with U; output is connected with zero line; the coil blackout in the first auxiliary relay; in the time of coil blackout; input point and output point in the first auxiliary relay 105 disconnect; thereby the first control point 108 that makes A.C. contactor 109 does not have signal of telecommunication input; A.C. contactor disconnects output circuit; thereby disconnect the way circuit of power consumption equipment, power consumption equipment is played a protective role.Wherein, be connected with solenoid in described the first control point 108, when there was signal of telecommunication input at the first control point, the solenoid energising, be communicated with respectively three input points of A.C. contactor with three output points of A.C. contactor, A.C. contactor output electric energy.
As shown in Figure 2, on the basis of above-mentioned phase-lacking protective device, this phase-lacking protective device also comprises and changes a switch and start stop switch; Described change a switch be provided with double-throw contact 214, hand start and stop contact 216, press start and stop contact 219, the time start and stop contact 220, shake start and stop contact 218; Described double-throw contact 214 is connected with the output point of described the 3rd auxiliary relay 107; Described hand start and stop contact 216 is connected with an end of described start stop switch; The other end of described start stop switch is connected with the first control point of described A.C. contactor 109.
A described switch that changes can be adjusted the start stop mode of power consumption equipment as required.As start and stop manually, as according to the arbitrarily magnitude of voltage start and stop between two-phase, as according to the Preset Time start and stop and by the Remote start and stop.
While wherein using start and stop manually, the described switch rotary start and stop in one's hands position of changing, described double-throw contact 214 is connected with described hand start and stop contact 216.Described start stop switch comprises start button 215 and stop button 217, manually presses start button 215, and the circuit that with the first control point of A.C. contactor 109, is connected is connected, and A.C. contactor is exported electric energy to power consumption equipment.When manually pressing stop button 217, the circuit that is connected with the first control point of A.C. contactor disconnects, and A.C. contactor disconnects the input electric energy of power consumption equipment.
Further, this phase-lacking protective device also comprises time switch 209; The input point of described time switch 209 start and stop contact 220 when described is connected, and output point is connected with the first control point of described A.C. contactor 109; The earth point of described time switch 209 is connected with described zero line 104.
That is, during use during start and stop, the described then start and stop position of a switch rotary of changing, described double-throw contact 214 start and stop contact 220 when described is connected.Preset the start-stop time of described time switch, time switch is preset the start-stop time according to being somebody's turn to do, the break-make of the circuit at the first control point of control A.C. contactor, thereby the break-make of the circuit of control power consumption equipment.
Further, this phase-lacking protective device also comprises remote control switch 211; The input point of described remote control switch 211 is connected with U phase 103, and the output point of described remote control switch 211 is connected with the input point of described the first auxiliary relay 105; The earth point of described remote control switch 211 is connected with described zero line 104; Described remote control switch 211 also comprises signal receiver; The described start and stop contact 218 of shaking is connected with the first control point of described A.C. contactor 109.By the signal receiver transmission remote signal of remote manipulator to described remote control switch, described signal receiver sends to processor with this remote signal, processor is controlled the switching of remote control switch according to this remote signal, thus the circuit at the first control point of disconnection or closed described A.C. contactor.
Further, this phase-lacking protective device also comprises the 4th auxiliary relay 212, the 5th auxiliary relay 213, high contact 223, middle contact 222 and low contact 221; The input of the coil of described the 4th auxiliary relay 212 is connected with described high contact 223, and output is connected with described zero line 104; The output point of described the 4th auxiliary relay 212 is connected with the input point of described the 5th auxiliary relay 213; The input of the coil of described the 5th auxiliary relay 213 is connected with described low contact 221, and output is connected with described zero line 104; Described middle contact 222 is connected with described pressure start and stop contact 219.
Voltmeter can be connected between described high contact 223 and described middle contact 222, voltmeter can be connected between described middle contact 222 and described low contact 221, for detection of the magnitude of voltage between two-phase.When the arbitrary phase time of disappearance, one of them voltmeter reading is zero.In addition, when the magnitude of voltage between any two-phase changed, the reading of voltmeter changed, when variation is larger, and the circuit communication of the alarm for high voltage device that is connected with described the 5th relay, the alarm for high voltage device is reported to the police.
Excessive in order to prevent electric current, this phase-lacking protective device also comprises thermal relay 208; Three input points of described thermal relay 208 are connected with three output points of described A.C. contactor 109 respectively; One end of the control circuit of described thermal relay 208 interior settings is connected with W, and the other end is connected with the second control point that A.C. contactor arranges.When electric current was excessive, the heat energy that the electric current of the thermal relay of flowing through produces disconnected thermal relay, thereby disconnected the circuit of power consumption equipment.
Further, this phase-lacking protective device also comprises running indicator and standby lamp; Described running indicator is with after described standby lamp is connected, and an end is connected with described zero line, and the other end is connected with the 3rd control point that described A.C. contactor arranges.When power consumption equipment normally moved, running indicator was bright, and during the power consumption equipment standby, the standby lamp is bright.
This phase-lacking protective device also comprises the first voltage transformer 201, the second voltage instrument transformer 202 that is connected on V phase 102 that is connected on U phase 103, tertiary voltage instrument transformer 203, the first direct current relay 206, the second direct current relay 205, the 3rd direct current relay 204, the electromagnetic air switch 207 that is connected on W phase 101.
The input point of described the 3rd direct current relay 204 is connected with U, and output point is connected with the input point of described the second direct current relay 205; The output point of described the second direct current relay 205 is connected with the input point of described the first direct current relay 206; The output point of described the first direct current relay 206 is connected with the input point of described electromagnetic air switch 207; Described the 3rd direct current relay 204 is electrically connected to described tertiary voltage instrument transformer 203; Described the second direct current relay 205 is electrically connected to described second voltage instrument transformer 202; Described the first direct current relay 206 is electrically connected to described the first voltage transformer 201.
One end of the coil of described electromagnetic air switch 207 is connected with zero line 104, and the other end is connected with an output point of described A.C. contactor 109; The output point of described electromagnetic air switch 207 is connected with the first control point of described A.C. contactor 109.
In addition, this phase-lacking protective device also comprises three indicator lights 210 that are connected on respectively U phase, V phase and W phase.When any one lacked mutually, the indicator light that is positioned at this phase extinguished, and was convenient to check the disappearance phase.
Further, this phase-lacking protective device also comprises short-circuit protection system.When electric leakage appearred in power consumption equipment, this short-circuit protection system was cut off the input power of power consumption equipment automatically, and operator's personal safety is played a protective role.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (9)
1. a phase-lacking protective device, is characterized in that, comprises the first auxiliary relay, the second auxiliary relay, the 3rd auxiliary relay, A.C. contactor;
The input of the coil that arranges in described the first auxiliary relay is connected with U, and output is connected with zero line; The input point of described the first auxiliary relay is connected with U, and output point is connected with the input point of described the second auxiliary relay;
The input of the coil that arranges in described the second auxiliary relay is connected with V, and output is connected with zero line; The output point of described the second auxiliary relay is connected with the input point of the 3rd auxiliary relay;
The input of the coil that arranges in described the 3rd auxiliary relay is connected with W, and output is connected with zero line; The output point of described the 3rd auxiliary relay is connected with the first control point that described A.C. contactor arranges;
Three input points of described A.C. contactor are connected with U phase, V phase, W respectively.
2. phase-lacking protective device as claimed in claim 1, is characterized in that, also comprises and change a switch and start stop switch;
Described change a switch be provided with double-throw contact, hand start and stop contact, press the start and stop contact, the time start and stop contact, shake the start and stop contact; Described double-throw contact is connected with the output point of described the 3rd auxiliary relay; Described hand start and stop contact is connected with an end of described start stop switch;
The other end of described start stop switch is connected with the first control point of described A.C. contactor.
3. phase-lacking protective device as claimed in claim 2, is characterized in that, also comprises time switch;
The input point of described time switch start and stop contact when described is connected, and output point is connected with the first control point of described A.C. contactor; The earth point of described time switch is connected with described zero line.
4. phase-lacking protective device as claimed in claim 3, is characterized in that, also comprises remote control switch;
The input point of described remote control switch is connected with U, and the output point of described remote control switch is connected with the input point of described the first auxiliary relay; The earth point of described remote control switch is connected with described zero line;
Described remote control switch also comprises signal receiver;
The described start and stop contact of shaking is connected with the first control point of described A.C. contactor.
5. phase-lacking protective device as claimed in claim 4, is characterized in that, also comprises the 4th auxiliary relay, the 5th auxiliary relay, high contact, middle contact and low contact;
The input of the coil of described the 4th auxiliary relay is connected with described high contact, and output is connected with described zero line; The output point of described the 4th auxiliary relay is connected with the input point of described the 5th auxiliary relay;
The input of the coil of described the 5th auxiliary relay is connected with described low contact, and output is connected with described zero line;
Described middle contact is connected with described pressure start and stop contact.
6. phase-lacking protective device as claimed in claim 5, is characterized in that, also comprises thermal relay;
Three input points of described thermal relay are connected with three output points of described A.C. contactor respectively; One end of the control circuit that arranges in described thermal relay is connected with W, and the other end is connected with the second control point that A.C. contactor arranges.
7. phase-lacking protective device as claimed in claim 6, is characterized in that, also comprises running indicator and standby lamp;
Described running indicator is with after described standby lamp is connected, and an end is connected with described zero line, and the other end is connected with the 3rd control point that described A.C. contactor arranges.
8. phase-lacking protective device as claimed in claim 7, it is characterized in that, also comprise the first voltage transformer that is connected on the U phase, the second voltage instrument transformer that is connected on the V phase, the tertiary voltage instrument transformer that is connected on the W phase, the first direct current relay, the second direct current relay, the 3rd direct current relay, electromagnetic air switch;
The input point of described the 3rd direct current relay is connected with U, and output point is connected with the input point of described the second direct current relay; The output point of described the second direct current relay is connected with the input point of described the first direct current relay; The output point of described the first direct current relay is connected with the input point of described electromagnetic air switch; Described the 3rd direct current relay is electrically connected to described tertiary voltage instrument transformer; Described the second direct current relay is electrically connected to described second voltage instrument transformer; Described the first direct current relay is electrically connected to described the first voltage transformer;
One end of the coil of described electromagnetic air switch is connected with zero line, and the other end is connected with an output point of described A.C. contactor; The output point of described electromagnetic air switch is connected with the first control point of described A.C. contactor.
9. phase-lacking protective device as claimed in claim 8, is characterized in that, also comprises three indicator lights that are connected on respectively U phase, V phase and W phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201881958U CN203289076U (en) | 2013-04-15 | 2013-04-15 | Default phase protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201881958U CN203289076U (en) | 2013-04-15 | 2013-04-15 | Default phase protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203289076U true CN203289076U (en) | 2013-11-13 |
Family
ID=49545420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201881958U Expired - Fee Related CN203289076U (en) | 2013-04-15 | 2013-04-15 | Default phase protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203289076U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105024341A (en) * | 2015-08-17 | 2015-11-04 | 佛山电力设计院有限公司 | Circuit breaker and circuit break system having zero-line disconnection and open-phase protection function |
-
2013
- 2013-04-15 CN CN2013201881958U patent/CN203289076U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105024341A (en) * | 2015-08-17 | 2015-11-04 | 佛山电力设计院有限公司 | Circuit breaker and circuit break system having zero-line disconnection and open-phase protection function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 024000 the Inner Mongolia Autonomous Region Chifeng City Zi Zhen Xi Zi Cun Xi Ning County six groups Patentee after: Liu Pinyi Address before: 6 groups of Ningcheng County town of sand sand village 024207 the Inner Mongolia Autonomous Region Chifeng City Patentee before: Liu Pinyi |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131113 Termination date: 20160415 |