7SR220 Settings Guide
Unrestricted ©2018 Siemens Protection Devices Limited Page 39 of 107
Description Range Default
Gn 81-3 Hysteresis
Sets the pickup to dropoff thresholds e.g. 3% on Overlevel
picks up above pickup setting and drops off below 97% of
setting, 3% on Underlevel picks up below setting and drops off
above 103% of setting
0, 0.1 ... 79.9, 80 0.1 %
Gn 81-3 Delay
Sets operate delay time
0, 0.01 ... 14300, 14400 0.6 s
Gn 81-3 U/V Guarded
Selects whether U/V Guard element can block the operation of
this element
No, Yes Yes
3.9.4. 81-4
Description Range Default
Gn 81-4 Element
Selects whether the Under/Over frequency element stage 4 is
enabled
Disabled, Enabled Disabled
Gn 81-4 Operation
Selects between Underfrequency and Overfrequency pickup
for this element
Under, Over Under
Gn 81-4 Setting
Under or over frequency pickup level
40, 40.01 ... 69.98, 69.99 47.5 Hz
Gn 81-4 Hysteresis
Sets the pickup to dropoff thresholds e.g. 3% on Overlevel
picks up above pickup setting and drops off below 97% of
setting, 3% on Underlevel picks up below setting and drops off
above 103% of setting
0, 0.1 ... 79.9, 80 0.1 %
Gn 81-4 Delay
Sets operate delay time
0, 0.01 ... 14300, 14400 0.4 s
Gn 81-4 U/V Guarded
Selects whether U/V Guard element can block the operation of
this element
No, Yes Yes
3.9.5. 81-5
Description Range Default
Gn 81-5 Element
Selects whether the Under/Over frequency element stage 5 is
enabled
Disabled, Enabled Disabled
Gn 81-5 Operation
Selects between Underfrequency and Overfrequency pickup
for this element
Under, Over Under
Gn 81-5 Setting
Under or over frequency pickup level
40, 40.01 ... 69.98, 69.99 47.5 Hz
Gn 81-5 Hysteresis
Sets the pickup to dropoff thresholds e.g. 3% on Overlevel
picks up above pickup setting and drops off below 97% of
setting, 3% on Underlevel picks up below setting and drops off
above 103% of setting
0, 0.1 ... 79.9, 80 0.1 %
Gn 81-5 Delay
Sets operate delay time
0, 0.01 ... 14300, 14400 0.4 s
Gn 81-5 U/V Guarded
Selects whether U/V Guard element can block the operation of
this element
No, Yes Yes
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