Siemens 7SR105 Rho - Page 84

7SR105 Rho Performance Specification
© 2018 Siemens Protection Devices Chapter 3 Page 8 of 17
High Frequency
Disturbance
IEC 60255-26 • Common-mode test voltage: 2.5 kV
• Differential test voltage: 1.0 kV
• Test duration: 2 s
• Source impedance: 200 Ω
Electrostatic Discharge IEC 60255-26 • 8 kV air discharge
Electrical Fast
Transient or Burst*
IEC 60255-26, Zone A Test severity Amplitude:
Power ports: 4 kV, burst frequency
5 kHz
Other ports: 4 kV, burst frequency 5 kHz
Surge Immunity* IEC 60255-26, Zone A Time to half-value: 1.2/50 µs
• Amplitude: 4 kV between all groups and
case earth (CM)
• Amplitude: 2 kV between terminals of each
group (DM)
Radiated Immunity IEC 60255-26
Test field strength, frequency band
80 MHz to 1000 MHz and 1400 MHz to
2700 MHz:
10 V/m, Test using AM: 1 kHz/80 %
Conducted Radio
Frequency Interference
IEC 60255-26, Class III 0.15 MHz to 80 MHz 10 V
Power Frequency
Magnetic Field
IEC 60255-26
30 A/m applied continuously,
300 A/m applied for 3 s
Conducted Emissions IEC 60255-26
CISPR 22, Class A
0.15 MHz to 0.5 MHz, 79dB µV (quasi peak)
66 dB µ V (average)
0.5 MHz to 30 MHz, 73dB µ V (quasi peak)
60 dB µV (average)
Radiated Emissions IEC 60255-26
CISPR 11, Class A
30 MHz to 230 MHz, 40 dB µ V/m at
10 m measurement distance
230 MHz to 1 GHz, 47 dB µ V/m at 10 m
measurement distance
Thermal & Burden IEC 60255-27 and
IEC 60255-1
Thermal:
1 A CT:
4 A continuous
30 A for 10 s
100 A for 1 s
5 A CT:
20 A Continuous
150 A for 10 s
500 A for 1s
Burden:
≤ 0.3 VA for 1 A and 5 A CT