7SR224 Argus Performance Specification
1.4 Environmental Performance
1.4.1 General
1.4.1.1 Temperature
IEC 60068-2-1/2
Type Level
Operating range
-10 °C to +55 °C
Storage range
-25 °C to +70 °C
1.4.1.2 Humidity
IEC 60068-2-3
Type Level
Operational test
56 days at 40 °C and 95 % relative humidity
1.4.1.3 Transient Overvoltage
IEC 60255-5
Type Level
Between all M4 terminals and earth, or
between any two independent circuits
5.0 kV, 1.2/50 μs 0.5j
1.4.1.4 Insulation
IEC 60255-5
Type Level
Between any M4 terminal and earth
Between independent circuits
2.5 kV AC RMS for 1 min
Across normally open contacts 1.0 kV AC RMS for 1 min
1.4.1.5 IP Ratings
Type Level
Installed with cover on IP 50 from front
Installed with cover removed IP 30 from front
1.4.2 Emissions
IEC 60255-25
1.4.2.1 Radiated Radio Frequency
Type Limits at 10 m, Quasi-peak
30 to 230 MHz
40 dB(μV/m)
230 to 10000 MHz
47 dB(μV/m)
1.4.2.2 Conducted Radio Frequency
Limits
Type
Quasi-peak Average
0.15 to 0.5 MHz
79 dB(μV) 66 dB(μV)
0.5 to 30 MHz
73 dB(μV) 60 dB(μV)
©2010 Siemens Protection Devices Limited Chapter 3 Page 13 of 49
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