Siemens Argus 7SR21 Technical Manual page 226

Description
Gn 51N-3 Dir. Control
Selects whether 51N-3 element is non-directional, forward or
reverse
Gn 51N-3 Setting
Pickup level
Gn 51N-3 Char
Selects characteristic curve to be IEC or ANSI IDMTL or DTL
Gn 51N-3 Time Mult (IEC/ANSI)
Time multiplier (applicable to IEC and ANSI curves but not
DTL selection)
Gn 51N-3 Delay (DTL)
Delay (applicable only when DTL is selected for characteristic)
Gn 51N-3 Min Operate Time
Minimum operate time of element.
Gn 51N-3 Follower DTL
Additional definite time added after characteristic time
Gn 51N-3 Reset
Selects between an ANSI decaying reset characteristic or a
definite time reset
Gn 51N-3 VTS Action
Selects whether 51N-3 element is blocked or made non-
directional when VTS operates
Gn 51N-3 Inrush Action
Selects if the 51N-3 element is blocked from operating when
2nd Harmonic Inrush Detector operates
3.4.4.4. 51N-4
Description
Gn 51N-4 Element
Selects whether the 51N-4 IDMTL derived Earth Fault element
is enabled
Gn 51N-4 Dir. Control
Selects whether 51N-4 element is non-directional, forward or
reverse
Gn 51N-4 Setting
Pickup level
Gn 51N-4 Char
Selects characteristic curve to be IEC or ANSI IDMTL or DTL
Gn 51N-4 Time Mult (IEC/ANSI)
Time multiplier (applicable to IEC and ANSI curves but not
DTL selection)
Gn 51N-4 Delay (DTL)
Delay (applicable only when DTL is selected for characteristic)
Gn 51N-4 Min Operate Time
Minimum operate time of element.
Gn 51N-4 Follower DTL
Additional definite time added after characteristic time
Gn 51N-4 Reset
Selects between an ANSI decaying reset characteristic or a
definite time reset
Gn 51N-4 VTS Action
Selects whether 51N-4 element is blocked or made non-
directional when VTS operates
Unrestricted ©2018 Siemens Protection Devices Limited
Range
Non-Dir, Forward, Reverse
0.05, 0.06 ... 2.49, 2.5
DTL, IEC-NI, IEC-VI, IEC-EI, IEC-
LTI, ANSI-MI, ANSI-VI, ANSI-EI
0.025, 0.03 ... 1.595, 1.6 , 1.7 ...
4.9, 5, 6 ... 100
0, 0.01 ... 19.99, 20
0, 0.01 ... 19.99, 20
0, 0.01 ... 19.99, 20
(ANSI) Decaying, 0 ... 59, 60
Off, Inhibit, Non-Dir
Off, Inhibit
Range
Disabled, Enabled
Non-Dir, Forward, Reverse
0.05, 0.06 ... 2.49, 2.5
DTL, IEC-NI, IEC-VI, IEC-EI, IEC-
LTI, ANSI-MI, ANSI-VI, ANSI-EI
0.025, 0.03 ... 1.595, 1.6 , 1.7 ...
4.9, 5, 6 ... 100
0, 0.01 ... 19.99, 20
0, 0.01 ... 19.99, 20
0, 0.01 ... 19.99, 20
(ANSI) Decaying, 0 ... 59, 60
Off, Inhibit, Non-Dir
7SR220 Settings Guide
Default
Non-Dir
0.5 xIn
IEC-NI
1
5 s
0 s
0 s
0 s
Off
Off
Default
Disabled
Non-Dir
0.5 xIn
IEC-NI
1
5 s
0 s
0 s
0 s
Off
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