Siemens Argus 7SR21 - Restricted E;F; NPS Overcurrent; 46 Dt; 46 It

7SR220 Settings Guide
Unrestricted ©2018 Siemens Protection Devices Limited Page 31 of 107
Description Range Default
Gn 50SEF-4 Dir. Control
Selects whether 50SEF-4 element is non-directional, forward
or reverse
Non-Dir, Forward, Reverse Non-Dir
Gn 50SEF-4 Setting
Pickup level
0.005, 0.006 ... 4.995, 5 0.2 xIn
Gn 50SEF-4 Delay
Sets operate delay time
0, 0.01 ... 14300, 14400 0 s
Gn 50SEF-4 VTS Action
Selects whether 50SEF-4 element is blocked or made non-
directional when VTS operates
Off, Inhibit, Non-Dir Off
3.4.7. Restricted E/F
Description Range Default
Gn 64H Element
High impedance restricted earth fault current element
Disabled, Enabled Disabled
Gn 64H Setting
Pickup level
0.005, 0.006 ... 0.945, 0.95 0.2 xIn
Gn 64H Delay
Sets operate delay time
0, 0.01 ... 14300, 14400 0 s
3.4.8. NPS Overcurrent
3.4.8.1. 46IT
Description Range Default
Gn 46IT Element
Selects whether the 46IT IDMTL/DTL negative phase
sequence current element is enabled
Disabled, Enabled Disabled
Gn 46IT Setting
Pickup level
0.05, 0.06 ... 2.49, 2.5 0.25 xIn
Gn 46IT Char
Selects characteristic curve to be IEC or ANSI IDMTL or DTL
DTL, IEC-NI, IEC-VI, IEC-EI, IEC-
LTI, ANSI-MI, ANSI-VI, ANSI-EI
IEC-NI
Gn 46IT Time Mult (IEC/ANSI)
Time multiplier (applicable to IEC and ANSI curves but not
DTL selection)
0.025, 0.03 ... 1.595, 1.6 , 1.7 ...
4.9, 5, 6 ... 100
1
Gn 46IT Delay (DTL)
Delay (applicable only when DTL is selected for characteristic)
0, 0.01 ... 19.99, 20 5 s
Gn 46IT Reset
Selects between an ANSI decaying reset characteristic or a
definite time reset
(ANSI) Decaying, 0 ... 59, 60 0 s
3.4.8.2. 46DT
Description Range Default
Gn 46DT Element
Selects whether the definite time NPS overvoltage element is
enabled
Disabled, Enabled Disabled
Gn 46DT Setting
Pickup level
0.05, 0.06 ... 4 0.1 xIn
Gn 46DT Delay
Sets operate delay time
0, 0.01 ... 14300, 14400 0.02 s