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Electromagnetic Requirements
1.
Table 11-11 lists the electromagnetic requirements 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).
Table 11-11 Electromagnetic Requirements
Electromagnetic Phenomenon
Specification
Power frequency
magnetic field
Frequency (Hz)
50
A/m (root-mean-square
value)
1
Amplitude-
modulated RF
electromagnetic
fields
Frequency (MHz)
80 to 1000
V/m (root-mean-square
value, unmodulated)
3
%AM (1 kHz)
80
Continuous RF wave
conduction
Frequency (MHz)
0.15 to 80
V (root-mean-square
value, unmodulated)
3
%AM (1 kHz)
80
It is recommended to take the following measures to suppress interference signals:
Take measures to prevent grid interference on the power supply system.
Keep away from electrical equipment such as medical magnetic resonance
equipment, helium arc welding machines, and RF electric heaters.
Avoid nearby high-power transmitters such as broadcasting, radars, and
mobile communication transmitters, electrified railways, industrial radiation,
transformer substations, and high-voltage transmission lines.
In the same operating environment, the interference level of other equipment
must meet the requirements of standards and regulations.
When necessary, take shielding and isolation measures to prevent natural
noise such as atmospheric noise and solar radio noise.
Protect the system from damage caused by ESD. For ESD protection methods, see
"Chapter 10 Electrostatic Discharge (ESD)".
2.
According to the requirements of IEC6268 Annex F.5, the safety symbols on the
server and their meanings are defined as follows:
a.
Safety protection from fan blades
