Emissions; Immunity - Siemens 7SR242 Duobias Technical Manual

1.4.2

Emissions

IEC 60255-25
1.4.2.1 Radiated Radio Frequency
Type
30 to 230 MHz
230 to 10000 MHz
1.4.2.2 Conducted Radio Frequency
Type
0.15 to 0.5 MHz
0.5 to 30 MHz
1.4.3

Immunity

1.4.3.1 Auxiliary DC Supply Variation
Quantity
Allowable superimposed ac component
Allowable breaks/dips in supply
(collapse to zero from nominal voltage)
1.4.3.2 High Frequency Disturbance
IEC 60255-22-1
Type
Case, Aux Power & I/O common (longitudinal) mode
Case, Aux Power & I/O Series (transverse) mode
RS485 Metallic Comms
1.4.3.3 Electrostatic Discharge
IEC 60255-22-2 Class IV
Type
Contact discharge
1.4.3.4 Radiated Immunity
IEC 60255-22-3 Class III
Type
80 MHz to 1000 MHz
©2015 Siemens Protection Devices Limited
Chapter 3) 7SR242 Duobias Performance Specification
Limits at 10 m, Quasi-peak
40 dB( V/m)
47 dB( V/m)
Quasi-peak
79 dB( V)
73 dB( V)
Value
12% of DC voltage
20ms
Level
2.5 kV
1.0 kV
1.0kV
Level
8.0 kV
Level
10 V/m
Limits
Average
66 dB( V)
60 dB( V)
Variation
10 %
No data loss
Variation
5 %
Variation
5 %
Chapter 3 Page 16 of 50