Computer Input Power Conditions; Input Power Specifications - NEC Express5800 1080Xd User Manual

Computer Input Power Conditions

Input Power Specifications

The input power source conditions for the power-receiving terminal areas of computers are
listed in Table 7. Figure 1 illustrates the electrical connections for the NEMA L6-30R 230
volt power receptacle required for your server.
Item
Phase quantity
Voltage (Average value)
Voltage (Peak value)
Frequency (Average value)
Frequency (Peak value)
Waveform distortion rate
Grounding
* It is necessary to take into account 2% as the voltage drop of the cable between the distribution panel and the equipment.
When the input power is ON/OFF, the rise/fall time of the input voltage shall be less than 2 seconds.
X
208V
Y
Ground
12 Express5800/1080Xd/1160Xd/1320Xd Site Preparation Guide
Table 7. Computer Input Power Conditions
Computer Input Power Condition
Single-phase 3 lines
208V±10%*
208V+15%, -20%
(Drift time: Less than 0.5 sec)
50 Hz or 60 Hz ± 1 Hz
50 Hz or 60 Hz ± 1 Hz to -2.5 Hz (Drift time: within 1 sec)
Within 8%
Computer-specialized grounding (Grounding resistance: less than 100Ω)
Figure 1. NEMA L6-30R 230-Volt Power Receptacle
120V
120V
30 Amp, 250V, 2-pole,
3-wire, Single Phase
Grounded