7SR220 Settings Guide
Unrestricted ©2018 Siemens Protection Devices Limited Page 17 of 107
Description Range Default
Gn 50-3 21LB-3P Action
Selects if operation of the 50-3 element is blocked for defined
load conditions
Off, Inhibit Inhibit
Gn 50-3 21LB-1P Action
Selects if operation of the 50-3 element is blocked for defined
load conditions
Off, Inhibit Off
3.4.1.8. 50-4
Description Range Default
Gn 50-4 Element
Selects whether the INST/ DTL Overcurrent element is
enabled
Disabled, Enabled Disabled
Gn 50-4 Dir. Control
Selects whether 50-4 element is non-directional, forward or
reverse
Non-Dir, Forward, Reverse Non-Dir
Gn 50-4 Setting
Pickup level
0.05, 0.06 ... 49.5, 50 1 xIn
Gn 50-4 Delay
Sets operate delay time
0, 0.01 ... 14300, 14400 0 s
Gn 50-4 VTS Action
Selects whether 50-4 element is blocked or made non-
directional when VTS operates
Off, Inhibit, Non-Dir Off
Gn 50-4 Inrush Action
Selects if the 50-4 element is blocked from operating when
2nd Harmonic Inrush Detector operates
Off, Inhibit Off
Gn 50-4 21LB-3P Action
Selects if operation of the 50-4 element is blocked for defined
load conditions
Off, Inhibit Inhibit
Gn 50-4 21LB-1P Action
Selects if operation of the 50-4 element is blocked for defined
load conditions
Off, Inhibit Off
3.4.2. Voltage Controlled O/C
Description Range Default
Gn 51V Element (Ph-Ph) Disabled, Enabled Disabled
Gn 51V Setting
The voltage below which 51V operates
5, 5.5 ... 199.5, 200 30 V
Gn 51V VTS Action
Selects whether or not the 51V element is blocked when VTS
operates
Off, Inhibit Off
Gn 51-1 Multiplier
Multiplier applied to the 51-1 element when VCO element has
operated
0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55,
0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9,
0.95, 1
0.5
Gn 51-2 Multiplier
Multiplier applied to the 51-2 element when VCO element has
operated
0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55,
0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9,
0.95, 1
0.5
Gn 51-3 Multiplier
Multiplier applied to the 51-3 element when VCO element has
operated
0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55,
0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9,
0.95, 1
0.5
Gn 51-4 Multiplier
Multiplier applied to the 51-4 element when VCO element has
operated
0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55,
0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9,
0.95, 1
0.5
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