Schweitzer Engineering Laboratories SEL-701 - Figure B.20 Reactive Power Elements Logic; Figure B.21 Speed Switch Tripping Logic

701 Motor Protection Relay Date Code 20010719
SEL
OGIC
®
Control Equations & Relay Logic
Selected Relay Logic Diagrams
B.42
Figure B.20 Reactive Power Elements Logic.
Figure B.21 Speed Switch Tripping Logic.
VARA
PVARAP
RUNNING
Relay
Word
Bits
VARAD
NVARAP
+Q
–P+P
–Q
PVARTP
PVARAP
NVARAP
NVARTP
VARDLY
VART
PVARTP
VARTD
NVARTP
Measured
Reactive Power
0
0
Relay
Word
Bit
Settings
0
TRIP
ALARM
STARTING
SPEEDSW
SPDSTR
Relay
Word
Bits
Relay
Word
Bits
0 s
SPDSDLY
STARTING =
SPEEDSW =
Motor is Starting
Speed Switch Input
SPDSDLY =
SPDSTR =
Speed Switch Delay
Speed Switch Trip