Siemens 7SR45 Argus User Manual page 68

Self powered/dual powered non-directional overcurrent and earth fault relay
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Type Test
Insulation Resistance
Impulse Voltage
Withstand
AC Dielectric Voltage
Slow Damped Oscillatory
Wave
$
Electrostatic Discharge
Electrical Fast Transient
or Burst
$
Surge Immunity *
$
Radiated Immunity
Conducted Radio
Frequency Interference
$
Power Frequency
Magnetic Field
Radiated Emissions
©2018 Siemens Protection Devices Limited
Table 1-13
Reference
#
IEC 60255-27
,
Edition 2.0
#
IEC 60255-27
,
Edition 2.0
#
IEC 60255-27
,
Edition 2.0
IEC 60255-26
IEC 60255-26
IEC 60255-26
IEC 60255-26
IEC 60255-26
IEC 60255-26
IEC 60255-26
IEC 60255-26
Chapter 3 - 7SR45 Performance Specification
Electrical Tests
Requirement
Insulation resistance >100 MOhm at
500 V DC
Test Duration: > 5 s
(Between any terminal and earth, independent
circuits) ^
5 kV, 1.2/50 µs, 0.5 J
5 +ve, -ve pulses
(Between all terminals and case earth and any
two independent circuits) ^
• All case terminals connected together
2.0 kV AC RMS, 1 min
(Between terminals of independent circuits) ^
1.0 kV AC RMS, 1 min
(across normally open contacts)
• Common-mode test voltage:
Test voltage: 2.5 kV peak voltage
• Differential mode:
Test voltage: 1.0 kV peak voltage
• Test duration: 2 s
• Source impedance: 200 Ω
• Voltage oscillation frequency: 1 MHz
• Repetition frequency: 400 Hz
• 8 kV air discharge
• 6 kV contact discharge
Zone B
Test severity Amplitude: ± 2 kV
Repetition frequency: 5 kHz
Test Level : Zone A
Line to Line : 0.5, 1, 2 kV
Line to Earth : 0.5, 1, 2, 4 kV
Front time/Time to half-value : 1.2/50 µs
Source Impedance : 2 Ohm
Test field strength, frequency band
80 MHz to 1.0 GHz and 1.4 GHz to 2.7 GHz
Field strength: 10 V/m (RMS)
Test using AM: 1 kHz/80 %
150 kHz to 80 MHz
10 V (RMS), Dwell time: 0.5 s
30 A/m applied 1 min,
300 A/m applied for 3 s
30 MHz – 230 MHz, 40 dB µ V/m (quasi peak)
230 MHz – 1 GHz, 47 dB µ V/m (quasi peak)
Limits are measured at 10 m distance
Chapter 3 Page 8 of 14

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