Siemens Argus 7SR21 - 37 Sef-1; 37 Sef-2; Thermal; ARC Flash Detector

7SR220 Settings Guide
Unrestricted ©2018 Siemens Protection Devices Limited Page 33 of 107
3.4.9.5. 37SEF-1
Description Range Default
Gn 37SEF-1 Element
SEF under current element 37SEF-1
Disabled, Enabled Disabled
Gn 37SEF-1 Setting
Pickup level
0.005, 0.006 ... 4.995, 5 0.2 xIn
Gn 37SEF-1 Delay
Sets operate delay time
0, 0.01 ... 14300, 14400 0 s
3.4.9.6. 37SEF-2
Description Range Default
Gn 37SEF-2 Element
SEF under current element 37SEF-2
Disabled, Enabled Disabled
Gn 37SEF-2 Setting
Pickup level
0.005, 0.006 ... 4.995, 5 0.2 xIn
Gn 37SEF-2 Delay
Sets operate delay time
0, 0.01 ... 14300, 14400 0 s
3.4.10. Thermal
Description Range Default
Gn 49 Thermal Overload
Selects whether the thermal overload protection element is
enabled
Disabled, Enabled Disabled
Gn 49 Overload Setting
Pickup level
0.1, 0.11 ... 2.99, 3 1.05 xIn
Gn 49 Time Constant (Minutes)
Thermal time constant
1, 1.5 ... 999.5, 1000 10 minutes
Gn 49 Capacity Alarm
Selects whether thermal capacity alarm enabled
Disabled, 50 ... 99, 100 Disabled
49 Reset Therm State
Control that allows thermal state to be manually reset
3.4.11. ARC Flash Detector
Description Range Default
Gn 50AFD
Selects whether the ARC Flash Detector element is enabled
Disabled, Enabled Disabled
Gn 50AFD Setting
Pickup level
1, 2,...10 2 xIn
3.5. Voltage Protection
3.5.1. Phase U/O Voltage
Description Range Default
Gn Voltage Input Mode
Selects Ph-Ph or Ph-N voltages for U/V guard element & 27/59
elements operation.
Ph-N, Ph-Ph Ph-N