FIELD: electrical engineering; protection of automatically controlled three-phase motors used in industry and agriculture.
SUBSTANCE: emergency operation signal picked off output of respective protective gear unit arrives at input of final element built around transistor. Such design rules out unwanted operation of protective gear in response to supply voltage fluctuations. Emergency condition pilot lights facilitate detection of motor disconnection cause and warning signal makes it possible to take all necessary measured before onset of emergency situation.
EFFECT: enhanced reliability and enlarged functional capabilities of protective gear.
1 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DEVICE FOR PROTECTING THREE-PHASE ELECTRIC MOTOR AGAINST EMERGENCY CONDITIONS | 0 |
|
SU1817184A1 |
| EMERGENCY PROTECTIVE GEAR OF THREE-PHASE MOTOR | 1999 |
|
RU2182395C2 |
| SYNCHRONOUS MOTOR EMERGENCY PROTECTIVE GEAR | 2004 |
|
RU2285993C2 |
| DEVICE FOR PROTECTION OF THREE-PHASE ELECTRIC MOTOR AGAINST OPERATION WITH OPEN AND NON-SYMMETRICAL PHASES IN POWER SUPPLY NETWORK | 0 |
|
SU1277292A1 |
| DEVICE FOR PROTECTION OF SYNCHRONOUS ELECTRIC MOTORS FROM EMERGENCY OPERATING CONDITIONS | 2004 |
|
RU2286638C2 |
| DEVICE FOR THREE-PHASE ELECTRIC MOTOR PROTECTION AGAINST OPERATING EMERGENCY CONDITIONS | 2021 |
|
RU2761393C1 |
| DEVICE FOR PROTECTING ELECTRIC MOTOR AGAINST OVERLOAD AND TWO-PHASE OPERATION | 0 |
|
SU1621116A1 |
| DEVICE FOR TEMPERATURE PROTECTING OF ELECTRIC MOTOR | 0 |
|
SU1128329A1 |
| ARRANGEMENT FOR CONTROL EMERGENCY PROTECTION OF SUBMERSIBLE MOTOR OF WELL PUMP | 0 |
|
SU1348939A1 |
| OUT-REGIME PROTECTING DEVICE FOR THREE-PHASE INDUCTION ELECTRIC MOTOR | 0 |
|
SU1764118A1 |
