Table 6.1 Input Power Requirement; Calculating The Power Required - Fujitsu M10 Series Installation Planning Manual

CHAPTER 6 Power Supply Facilities
Item
Input voltage
Voltage regulation
Instantaneous input voltage
variation
Instantaneous input
interruption
Input frequency
Frequency regulation
Input voltage imbalance
Voltage waveform distortion
Power capacitance
Rush current
6.1.2

Calculating the power required

For the purpose of selecting the kind of power supply facilities required, calculate the
total power requirement of every unit in the system by consulting the relevant
Installation Planning Manual.
6.1.3 Calculating the rush current
The rush current calculation assists with selecting a UPS. Calculate the rush current in
the power-on sequence by consulting the documentation for each component. The
case that more than one device may turn on at the same time should also be
considered.
If the UPS is started up rapidly, the UPS startup could occur as rush current flows
from the server system line filter and before the server system power controller begins
to properly supply power to the server system. In this case, the UPS may detect
overcurrent. Try to use an UPS that allows for a slow startup.
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Table 6.1 Input power requirement

Number of phases
Single-phase two-wire
Single-phase two-wire
Three-phase three-wire 200 V, 208 V,220 V, 230 V, 240 V
Three-phase four-wire
From +10% to -10% of the input voltage or less
+15% to -20% of the input voltage or less in 0.5 second or
shorter
10ms or less
50 Hz or 60 Hz
+2% to -4% of the input frequency
5% or less (three-phase input)
10% or less
Depends on each unit specifications
Depends on each unit specifications
Requirement
Abroad
100 V, 110 V, 115 V, 120 V
200 V, 208 V, 220 V, 230 V, 240 V
380 V, 400 V, 415 V neutral conductor
connected to ground
C120-H007-08EN