Figure 3.10-1 Logic Diagram: Thermal Overload Protection (49S) - Siemens 7SR21 Manual
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49 Therm. Overload
Enabled
Disabled
Inhibit 49
Figure 3.10-1 Logic Diagram: Thermal Overload Protection (49S)
©2010 Siemens Protection Devices Limited
49 Overload Setting
49 Time Constant
49 Capacity Alarm
&
c
cap alarm
IL1
trip
cap alarm
IL2
trip
cap alarm
IL3
trip
7SR21 & 7SR22 Argus Description of Operation
1
1
Chapter 1 Page 43 of 71
49 Alarm
49 Trip
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