Siemens Argus 7SR21 - Derived E;F

7SR220 Settings Guide
Unrestricted ©2018 Siemens Protection Devices Limited Page 19 of 107
Description Range Default
Gn 51c-3 Delay (DTL)
As Above
0, 0.01 ... 19.99, 20 5 s
Gn 51c-3 Min Operate Time
As Above
0, 0.01 ... 19.99, 20 0 s
Gn 51c-3 Follower DTL
As Above
0, 0.01 ... 19.99, 20 0 s
Gn 51c-3 Reset
As Above
(ANSI) Decaying, 0 ... 59, 60 0 s
Gn 51c-4 Setting
51-4 element parameter used when Cold Load operates
0.05, 0.06 ... 2.49, 2.5 1 xIn
Gn 51c-4 Char
As Above
DTL, IEC-NI, IEC-VI, IEC-EI, IEC-
LTI, ANSI-MI, ANSI-VI, ANSI-EI
IEC-NI
Gn 51c-4 Time Mult (IEC/ANSI)
As Above
0.025, 0.03 ... 1.595, 1.6 , 1.7 ...
4.9, 5, 6 ... 100
1
Gn 51c-4 Delay (DTL)
As Above
0, 0.01 ... 19.99, 20 5 s
Gn 51c-4 Min Operate Time
As Above
0, 0.01 ... 19.99, 20 0 s
Gn 51c-4 Follower DTL
As Above
0, 0.01 ... 19.99, 20 0 s
Gn 51c-4 Reset
As Above
(ANSI) Decaying, 0 ... 59, 60 0 s
3.4.4. Derived E/F
Description Range Default
Gn 67N Polarizing Quantity
Allows the directional element to select which quantities to
use.
ZPS, NPS ZPS
Gn 67N Char Angle
Maximum torque angle for derived earth fault elements
-95, -94 ... 94, 95 -15 deg
Gn 67N Minimum Voltage
Selects the directional elements minimum voltage, below
which the element will be inhibited
0.33, 0.5, 1, 1.5, 2, 2.5, 3 0.33 V
3.4.4.1. 51N-1
Description Range Default
Gn 51N-1 Element
Selects whether the 51N-1 IDMTL derived Earth Fault element
is enabled
Disabled, Enabled Disabled
Gn 51N-1 Dir. Control
Selects whether 51N-1 element is non-directional, forward or
reverse
Non-Dir, Forward, Reverse Non-Dir
Gn 51N-1 Setting
Pickup level
0.05, 0.06 ... 2.49, 2.5 0.5 xIn
Gn 51N-1 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 51N-1 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