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8.9
Electromagnetic Compatibility and Safety
Requirements
As per GB/T 17626.3 (IEC 61000-4-3), GB/T 17626.6 (IEC 61000-4-6) and GB/T
17626.8 (IEC 61000-4-8), the recommended electromagnetic environment is as
follows:
Table 8-10 Electromagnetic Environment
Electromagnetic Phenomenon
Specifications
Power frequency
magnetic field
Frequency (Hz)
50
A/m (rms)
≤ 1
RF electromagnetic
field amplitude
modulation
Frequency (MHz)
80 - 1000
V/m (rms, unmodulated)
≤ 3
%AM (1 kHz)
80
RF continuous wave
conduction
Frequency (MHz)
0.15 - 80
V (rms, unmodulated)
≤ 3
%AM (1 kHz)
80
Take the following measures to suppress interference signals:
Take effective measures against power grid interference to the power supply
system.
Keep away from electrical equipment such as medical magnetic resonance
equipment, helium arc welding machines, and RF electric heaters.
Try to avoid the impact of nearby areas with high power emissions (broadcast,
radar, and mobile communication transmitters), electrified railways, industrial
radiation, substations, and high-voltage transmission lines.
The interference effect of other equipment in the server room must comply
with relevant standards and regulations.
Take measures to shield and isolate natural noise such as atmospheric noise
and solar radio noise when necessary.
To avoid damage to the system, take ESD protection measures (See Section 6
Electrostatic Discharge.)
