FIELD: electricity.
SUBSTANCE: device comprises an intermediate current transformer, input of which is an information input of the current relay, a rectifier, an actuating element, five threshold units, two AND elements, a reversible counter, a gate multivibrator, a clock pulse generator, a frequency divider, a subtraction unit, a delay element and an averaging filter.
EFFECT: expansion of functional capabilities.
2 dwg
Title | Year | Author | Number |
---|---|---|---|
CURRENT RELAY | 2014 |
|
RU2563959C1 |
CURRENT RELAY | 2003 |
|
RU2231884C1 |
CURRENT RELAY | 2003 |
|
RU2248653C2 |
PHASE-FREQUENCY RELAY | 2003 |
|
RU2239904C1 |
FREQUENCY-PHASE RELAY | 2016 |
|
RU2641096C2 |
CURRENT RELAY | 2003 |
|
RU2234782C1 |
CURRENT RELAY | 2016 |
|
RU2628090C1 |
CURRENT RELAY | 2003 |
|
RU2244991C1 |
CURRENT RELAY | 2001 |
|
RU2192084C1 |
PHASE-DIFFERENCE RELAY | 2003 |
|
RU2248640C2 |
Authors
Dates
2011-04-27—Published
2010-01-22—Filed