Functions
2.31 100-%-Stator Earth Fault Protection with 20 Hz Voltage Injection (ANSI 64G - 100%)
SIPROTEC, 7UM62, Manual
C53000-G1176-C149-7, Release date 03.2010
230
Trip stage: primary 2 kΩ, secondary 66 Ω
Alarm stage: primary 5 kΩ, secondary 165 Ω
2.31.3 Settings
Addresses which have an appended "A" can only be changed with DIGSI, under Additional Settings.
2.31.4 Information List
Addr. Parameter Setting Options Default Setting Comments
5301 100% SEF-PROT. OFF
ON
Block relay
OFF 100% Stator-Earth-Fault Protec-
tion
5302 R< SEF ALARM 20 .. 700 Ω 100 Ω Pickup Value of Alarm Stage
Rsef<
5303 R<< SEF TRIP 20 .. 700 Ω 20 Ω Pickup Value of Tripping Stage
Rsef<<
5304 T SEF ALARM 0.00 .. 60.00 sec; ∞ 10.00 sec Time Delay of Alarm Stage Rsef<
5305 T SEF TRIP 0.00 .. 60.00 sec; ∞ 1.00 sec Time Delay of Tripping Stage
Rsef<<
5306 SEF I>> 0.02 .. 1.50 A 0.40 A Pickup Value of I SEF>> Stage
5307 U20 MIN 0.3 .. 15.0 V 1.0 V Supervision Threshold of 20Hz
Voltage
5308 I20 MIN 5 .. 40 mA 10 mA Supervision Threshold of 20Hz
Current
5309 PHI I SEF -60 .. 60 ° 0 ° Correction Angle for I SEF 100%
5310A SEF Rps 0.0 .. 700.0 Ω 0.0 Ω Resistance Rps
5311A Rl-PARALLEL 20 .. 700 Ω; ∞∞Ω Parallel Load Resistance
No. Information Type of In-
formation
Comments
5473 >SEF100 BLOCK SP >BLOCK Stator earth fault protection
5476 >U20 failure SP >Failure 20Hz bias voltage (S/E/F)
5481 SEF100 OFF OUT Stator earth flt. prot. 100% is swit.OFF
5482 SEF100 BLOCKED OUT Stator earth flt. prot. 100% is BLOCKED
5483 SEF100 ACTIVE OUT Stator earth flt. prot. 100% is ACTIVE
5486 SEF100 Failure OUT Stator earth flt. prot. 100% Failure
5487 SEF100 Alarm OUT Stator earth flt. prot.100% Alarm stage
5488 SEF100 pickup OUT Stator earth flt. prot.100% picked up
5489 SEF100 TRIP OUT Stator earth flt. prot.100% TRIP
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