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Intel® Server Chassis SR1475 / Intel® Server System SR1475NH1-E
7.
Electromagnetic Compatibility
7.1
EMI
The power supply shall comply with FCC Part 15, CISPR 22 and EN55022; Class A for both
conducted and radiated emissions with a 10dB margin. Tests shall be conducted using a
shielded DC output cable to a shielded load. The load shall be adjusted as follows for three
tests: no load on each output; 50% load on each output; and 75% load on each output. Tests
will be performed at 100VAC 50Hz, 120 VAC 60 Hz, and 230 VAC 50 Hz power.
Margin at 100% loading shall be 3-4dB from the class A limit.
The power supply shall comply with EN55024.
The power supply when installed in the system must meet all the immunity requirements when
integrated into the end Intel system.
7.2
Input Line Current Harmonic Content (PFC)
The power supply shall meet the requirements of EN61000-3-2 Class A and the Guidelines for
the Suppression of Harmonics in Appliances and General Use Equipment Class A for harmonic
line current content at full rated power.
Harmonic Order
n
Odd harmonics
3
5
7
9
11
13
≤
≤
15
n
39
Even harmonics
2
4
6
≤
≤
8
n
40
Revision 1.0
Table 45. Harmonic Limits, Class A equipment
Per: EN 61000-3-2
Maximum permissible
Harmonic current at
230Vac/50Hz in Amps
2.3
1.14
0.77
0.4
0.33
0.21
0.15x (15/n)
1.08
0.43
0.3
0.23x (8/n)
Per: JEIDA MITI
Maximum permissible
Harmonic current at
100Vac/50Hz in Amps
5.29
2.622
1.771
0.92
0.759
0.483
0.345x (15/n)
2.484
0.989
0.69
0.529x (8/n)
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