7SR220 Settings Guide
Unrestricted ©2018 Siemens Protection Devices Limited Page 15 of 107
3.4.1.4. 51-4
Description Range Default
Gn 51-4 Element
Selects whether the 51-4 IDMTL Overcurrent element is
enabled
Disabled, Enabled Disabled
Gn 51-4 Dir. Control
Selects whether 51-4 element is non-directional, forward or
reverse
Non-Dir, Forward, Reverse Non-Dir
Gn 51-4 Setting
Pickup level
0.05, 0.06 ... 2.49, 2.5 1 xIn
Gn 51-4 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 51-4 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 51-4 Delay (DTL)
Delay (applicable only when DTL is selected for characteristic)
0, 0.01 ... 19.99, 20 5 s
Gn 51-4 Min Operate Time
Minimum operate time of element.
0, 0.01 ... 19.99, 20 0 s
Gn 51-4 Follower DTL
Additional definite time added after characteristic time
0, 0.01 ... 19.99, 20 0 s
Gn 51-4 Reset
Selects between an ANSI decaying reset characteristic or a
definite time reset
(ANSI) Decaying, 0 ... 59, 60 0 s
Gn 51-4 VTS Action
Selects whether 51-4 element is blocked or made non-
directional when VTS operates
Off, Inhibit, Non-Dir Off
Gn 51-4 Inrush Action
Selects if the 51-4 element is blocked from operating when
2nd Harmonic Inrush Detector operates
Off, Inhibit Off
Gn 51-4 21LB-3P Action
Selects if operation of the 51-4 element is blocked for defined
load conditions
Off, Inhibit Inhibit
Gn 51-4 21LB-1P Action
Selects if operation of the 51-4 element is blocked for defined
load conditions
Off, Inhibit Off
3.4.1.5. 50-1
Description Range Default
Gn 50-1 Element
Selects whether the INST/ DTL Overcurrent element is
enabled
Disabled, Enabled Disabled
Gn 50-1 Dir. Control
Selects whether 50-1 element is non-directional, forward or
reverse
Non-Dir, Forward, Reverse Non-Dir
Gn 50-1 Setting
Pickup level
0.05, 0.06 ... 49.5, 50 1 xIn
Gn 50-1 Delay
Sets operate delay time
0, 0.01 ... 14300, 14400 0 s
Gn 50-1 VTS Action
Selects whether 50-1 element is blocked or made non-
directional when VTS operates
Off, Inhibit, Non-Dir Off
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