Siemens SIPROTEC 7UM62, Manual

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Rate-of-Frequency-Change Protection df/dt (ANSI 81R)
171
7UM62 Manual
C53000-G1176-C149-3
2.24.2.2 Information for the Rate-of-Frequency-Change Protection
4509 df2/dt & f2 OFF
ON OFF AND logic with pickup of stage f2
4510 df3/dt >/< -df/dt< negative rate of freq.
change
+df/dt> positive rate of freq.
change
-df/dt< negative
rate of freq.
change Mode of Threshold (df3/dt >/<)
4511 STAGE df3/dt 0.1..10.0 Hz/s;
∞
4.0 Hz/s Pickup Value of df3/dt Stage
4512 T df3/dt 0.00..60.00 sec;
∞
0.00 sec Time Delay of df3/dt Stage
4513 df3/dt & f3 OFF
ON OFF AND logic with pickup of stage f3
4514 df4/dt >/< -df/dt< negative rate of freq.
change
+df/dt> positive rate of freq.
change
-df/dt< negative
rate of freq.
change Mode of Threshold (df4/dt >/<)
4515 STAGE df4/dt 0.1..10.0 Hz/s;
∞
4.0 Hz/s Pickup Value of df4/dt Stage
4516 T df4/dt 0.00..60.00 sec;
∞
0.00 sec Time Delay of df4/dt Stage
4517 df4/dt & f4 OFF
ON OFF AND logic with pickup of stage f4
F.No. Alarm Comments
05503 >df/dt block >BLOCK Rate-of-frequency-change prot.
05504 >df1/dt block >BLOCK df1/dt stage
05505 >df2/dt block >BLOCK df2/dt stage
05506 >df3/dt block >BLOCK df3/dt stage
05507 >df4/dt block >BLOCK df4/dt stage
05511 df/dt OFF df/dt is switched OFF
05512 df/dt BLOCKED df/dt is BLOCKED
05513 df/dt ACTIVE df/dt is ACTIVE
05514 df/dt U< block df/dt is blocked by undervoltage
05516 df1/dt pickup Stage df1/dt picked up
05517 df2/dt pickup Stage df2/dt picked up
05518 df3/dt pickup Stage df3/dt picked up
05519 df4/dt pickup Stage df4/dt picked up
05520 df1/dt TRIP Stage df1/dt TRIP
05521 df2/dt TRIP Stage df2/dt TRIP
05522 df3/dt TRIP Stage df3/dt TRIP
05523 df4/dt TRIP Stage df4/dt TRIP
Addr. Setting Title Setting Options Default Setting Comments