scheider electric MiCOM P746 - Earth Fault (Only Available for One Box Mode)

P746/EN ST/G31 Settings
(ST) 4-
12 MiCOM P746
ST
1.2.5 Earth fault (only available for one box mode)
Setting Range
Menu Text Default Setting
Min. Max.
Step Size
EARTH FAULT
TERMINAL 1 to 6 (one box)
IN>1 Function IEC S inverse Disabled / US ST Inverse / US Inverse /
IEEE E Inverse / IEEE V Inverse / IEEE M
Inverse / IDG / UK Rectifier /UK LT Inverse
/ IEC E Inverse / IEC V inverse / IEC S
Inverse /DT / RI
Setting for the tripping characteristic for the first stage earth fault element.
IN>1 Current 200.0 A 80.00 A 4.000 kA 10 A
Pick-up setting for the first stage earth fault element
IN>1 Time Dial 1.000 0.010 100.0 0.010
Setting for the time multiplier setting to adjust the operating time of the IEEE/US IDMT
curves.
IN>1 Reset Char DT DT / Inverse
Setting to determine the type of reset/release characteristic of the IEEE/US curves.
IN>1 tReset 0.000 s 0.000 s 100.0 s 10.00 ms
Setting that determines the reset/release time for definite time reset characteristic.
IN>1 IDG Is 1.500 1.000 4.000 0.100
Setting to determine the IDG characteristics
IN>1 TMS 1.000 0.025 1.200 0.025
Setting for the time multiplier setting to adjust the operating time of the IEC IDMT
characteristic
IN>1 IDG Time 1.200 s 1.000 s 2.000 s 10 ms
Setting thet determines the IDG time.
IN>1 k (RI) 1.000 0.100 10.00 0.050
Selects the electromechanical inverse time curve (RI) curve K value from 0.100 to 10 for
the first stage of ground overcurrent protection
IN>1 Time Delay 1.000 s 0.000 s 200.0 s 10.00 ms
Setting for the time-delay for the definite time setting if selected for first stage element
IN>2 Function Disabled Disabled / DT
Setting to enable or disable the second stage overcurrent element.
IN>2 Current 200.0 A 80.00 A. 32.00 kA 10 A
Pick-up setting for second stage overcurrent element.
IN>2 Time delay 1.000 s 0.000 s 100.0 s 10.00 s
Setting for the operating time-delay for second stage overcurrent element.