Siemens Argus 7SR21 Technical Manual page 331

1.4.3.5 Fast Transients
IEC 60255-22-4 Class A (2002)
Type
5/50 ns 2.5 kHz repetitive
1.4.3.6 Surge Immunity
IEC 60255-22-5; IEC 61000-4-5
Type
Analogue Inputs.
Line to Earth.
Case, Aux Power & I/O.
Line to Earth.
RS485 Comms Port.
Line to Earth.
Analogue Inputs.
Line to Line.
Case, Aux Power & I/O.
Line to Line.
* Note: 45 ms pick-up delay for DTL applied to binary inputs
1.4.3.7 Conducted Radio Frequency Interference
IEC 60255-22-6
Type
0.15 MHz to 80 MHz
1.4.3.8 Magnetic Field with Power Frequency
IEC 61000-4-8 level 5
100 A/m, (0.126 mT) continuous
1000 A/m, (1.26 mT) for 3 s
Unrestricted © 2013 Siemens Protection Devices Limited
7SR21 & 7SR22 Performance Specification
Level
4 kV
Level
4.0 kV
2.0 kV
1.0 kV
1.0 kV
1.0 kV*
Level
10 V
50 Hz
Variation
£ 5 %
Variation
≤ 10 % or 1 mA
≤ 10 % or 1 mA
No Data Loss
≤ 10 % or 1 mA
≤ 10 % or 1 mA
Variation
£ 5 %
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