7SR224 Argus Performance Specification
1.4.3 Immunity
1.4.3.1 Auxiliary DC Supply Variation
Quantity Value
Allowable superimposed ac component
≤ 12% of DC voltage
Allowable breaks/dips in supply
(collapse to zero from nominal voltage)
≤ 20ms
1.4.3.2 High Frequency Disturbance
IEC 60255-22-1 Class III
Type Level Variation
Common (longitudinal) mode 2.5 kV
Series (transverse) mode 1.0 kV
≤ 5 %
1.4.3.3 Electrostatic Discharge
IEC 60255-22-2 Class IV
Type Level Variation
Contact discharge 8.0 kV
≤ 5 %
1.4.3.4 Radiated Immunity
IEC 60255-22-3 Class III
Type Level Variation
80 MHz to 1000 MHz 10 V/m
≤ 5 %
1.4.3.5 Fast Transients
IEC 60255-22-4 Class IV
Type Level Variation
5/50 ns 2.5 kHz repetitive 4kV
≤ 5 %
1.4.3.6 Surge Immunity
IEC 60255-22-5
Type Level Variation
Between all terminals and earth 4.0 kV
Between Line to Line 2.0 kV
≤ 10 %
1.4.3.7 Conducted Radio Frequency Interference
IEC 60255-22-6
Type Level Variation
0.15 to 80 MHz 10 V
≤ 5 %
©2010 Siemens Protection Devices Limited Chapter 3 Page 14 of 49
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