FIELD: electrical engineering. SUBSTANCE: phase-frequency relay designed to check generator phase and frequency for deviation from those of supply mains has two final elements, five comparators, five AND gates, pulse counter, clock generator, two short-pulse shapers, two registers, two delay circuits, and flip-flop. EFFECT: enlarged functional capabilities. 1 cl 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| RESISTANCE RELAY | 2002 |
|
RU2224322C1 |
| RELAY | 2002 |
|
RU2216810C1 |
| FREQUENCY DIFFERENCE RELAY | 2002 |
|
RU2210131C1 |
| RESISTANCE RELAY | 2002 |
|
RU2227942C1 |
| DIFFERENTIAL-PHASE RELAY | 2002 |
|
RU2231156C1 |
| STATIC POWER RELAY | 2002 |
|
RU2216813C1 |
| PHASE MISMATCH SPEED RELAY | 2002 |
|
RU2222085C1 |
| FREQUENCY ADJUSTMENT RELAY | 2002 |
|
RU2210133C1 |
| DIFFERENTIAL RELAY | 2002 |
|
RU2223569C1 |
| RATE-OF-PHASE-ERROR RELAY | 2002 |
|
RU2208282C1 |
