FIELD: electrical engineering. SUBSTANCE: device has current pickups built on transistor optrons, resistors and stabilizer diodes, phase-sensitive unit built on thyristor optrons, variable resistors and integrating circuits, voltage divider, diodes assembly, voltage comparators, logic OR gate and final-control element. Salient feature of invention lies in use of transistor optocouplers in the capacity of current pickup and in couplings with other elements of circuit. EFFECT: reduced mass and size characteristics, expanded functional capabilities of device. 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DEVICE FOR COMPLEX PROTECTION OF ELECTRIC SYSTEM | 1995 |
|
RU2115986C1 |
| DEVICE FOR CURRENT PROTECTION OF ELECTRIC MOTOR WITH INVERSE TIME DELAY | 0 |
|
SU1153373A1 |
| RELAY DEVICE | 1991 |
|
RU2022436C1 |
| A.C. TO D.C.VOLTAGE CONVERTER | 0 |
|
SU1345297A1 |
| DEVICE FOR PROTECTION OF THREE-PHASE ELECTRIC MOTOR AGAINST ABNORMAL OPERATING CONDITIONS | 0 |
|
SU1721696A1 |
| SINGLE-PHASE ELECTRIC CURRENT STABILIZER FOR WELDING | 2005 |
|
RU2299794C1 |
| DEVICE FOR PROTECTING THREE-PHASE MOTOR AGAINST PHASE BREAK AND WRONG PHASE SEQUENCE | 0 |
|
SU1617524A1 |
| THREE-PHASE LOAD CONTROL APPARATUS INCORPORATING PHASE-FAILURE PROTECTIVE GEAR AND WARNING DEVICE | 2005 |
|
RU2291539C2 |
| A.C.SWITCH | 0 |
|
SU1140243A1 |
| THYRISTOR SELECTOR SWITCH FOR THREE-PHASE CIRCUITS | 0 |
|
SU1274144A1 |
