FIELD: electrical engineering.
SUBSTANCE: proposed device that has resistor-capacitor reverse-sequence voltage filter, three-phase power supply, two current transformers, two reed relays, rectifier bridge, storage capacitor with discharge resistor, capacitor, final element, phase-meter, two different-structure bipolar transistors, and two optocouplers is provided with newly introduced push-buttons inserted in reverse-sequence voltage filter arms and connected in parallel with one of resistors.
EFFECT: enhanced reliability of three-phase motor protection against unbalanced operation.
1 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DEVICE FOR PROTECTION OF THREE-PHASE ELECTRIC MOTOR AGAINST NON-SYMMETRIC MODES OF OPERATION | 0 |
|
SU1274062A1 |
| DEVICE FOR PROTECTION OF THREE-PHASE ELECTRIC MOTOR AGAINST OPEN-PHASE MODE | 2009 |
|
RU2400004C1 |
| APPLIANCE FOR CONTROL SIGNALS TRANSMISSION IN ELECTRICAL SYSTEM | 0 |
|
SU1835553A1 |
| DEVICE FOR PROTECTION OF THREE-PHASE ELECTRIC MOTOR AGAINST ABNORMAL OPERATING CONDITIONS | 0 |
|
SU1800548A1 |
| DEVICE FOR PHASE-FAILURE PROTECTION OF THREE-PHASE MOTOR | 0 |
|
SU1053209A1 |
| DEVICE FOR CONNECTING CAPACITOR BANK | 0 |
|
SU1317559A1 |
| DEVICE FOR PROTECTION OF THREE-PHASE MOTOR AGAINST OPERATION IN EMERGENCY MODE | 0 |
|
SU1182598A1 |
| DEVICE FOR PROTECTING THREE-PHASE ELECTRIC MOTOR FROM INCOMPLETE PHASE MODE | 0 |
|
SU936181A1 |
| DEVICE FOR PROTECTION OF THREE-PHASE ELECTRIC MOTOR AGAINST ABNORMAL OPERATING CONDITIONS | 0 |
|
SU1721696A1 |
| DEVICE FOR PROTECTING THREE-PHASE ELECTRIC MOTOR FROM ASYMMETRIC MODE | 0 |
|
SU936190A1 |
