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Intel® Server Chassis SC1400UP / Intel® Server Platform SR1425BK1-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.
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. See Table 19 for the harmonic limits.
Harmonic Order
n
Odd harmonics
3
5
7
9
11
13
≤
≤
15
n
39
Even harmonics
2
4
6
≤
≤
8
n
40
Also, the Max AC current draw from the line may not exceed 5.5Arms at LO line and 2.76Arms
at HI line, as specified in Table 2.
7.3
Magnetic Leakage Fields
The PFC choke magnetic leakage field shall not cause any interference with a high resolution
computer monitor placed next to or on top of the end use chassis. Final acceptable leakage
Revision 1.0
Table 43. 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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