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Chapter 3) 7SR158 Performance Specification
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
1.4GHz to 2.7GHz
80,160,380,450,900,1850,2150 MHz
1.4.3.5
Electrical Fast Transient / Burst Immunity
IEC 60255-22-4 Class A (2002)
Type
Case, Aux Power & I/O
RS485 Metallic Comms
1.4.3.6
Surge Immunity
IEC 60255-22-5, IEC 61000-4-5
Type
Analog Inputs Line to Earth
Case, Aux Power & I/O Line to Earth
Analog Inputs Line to Line
Case, Aux Power & I/O Line to Line
RS485 Comms port Line to Earth
* Note 45ms pick up delay applied to binary inputs
1.4.3.7
Conducted Radio Frequency Interference
IEC 60255-22-6
Type
0.15 to 80 MHz
Chapter 3 - Page 14 of 24
Level
2.5 kV
1.0 kV
1.0kV
Level
8.0 kV
Level
Sweep
Sweep
10 V/m
Spot
Level
4.0 kV
2.0 kV
Level
4.0 kV
2.0 kV
1.0 kV
1.0 kV*
1.0 kV
Variation
10 %
No data loss
Variation
5 %
Variation
5 %
Variation
10 %
No data loss
Variation
10 %
No data loss
Level
10 V
©2013 Siemens Protection Devices Limited
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