Siemens 7SR224 Technical Manual page 107

100000
10000
1000
Time
(sec)
100
10
1
0.1
0 1
Figure 2-1 Thermal Overload Protection Curves
©2010 Siemens Protection Devices Limited
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Current (multiple of setting)
7SR224 Argus Performance Specification
τ = 1000 mins
τ = 100 mins
τ = 10 mins
τ = 1 min
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Chapter 3 Page 22 of 49
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