10
Site Planning Guide
AC Power Input
provides the AC power input for the QS1200 and QS2400 base systems.
NOTE:
Each power supply contains one 10-A slow-blow fuse.
Power Factor Correction
Power factor correction is applied within the power supply, which maintains the power factor of the
QS1200 and QS2400 base systems at greater than 0.95 with nominal input voltage.
AC Power Cords and Receptacles
Each QS1200 and QS2400 base system ships with two AC power cords, which use the standard AC
outlets in the destination country. Each AC power cord connects one of the power supplies in the
drive tray to an independent, external AC power source, such as a wall receptacle, or to any
uninterruptible power supply (UPS).
If you have a cabinet with internal power cabling, such as a ladder cord, you do not need the AC
power cords that are shipped with the QS1200 and QS2400 base system.
Table 9
AC Power Input for the QS1200 and QS2400 Base Systems
Parameter
Low Range
High Range
Nominal voltage
100 VAC
240 VAC
Frequency
50 to 60 Hz
50 to 60 Hz
Typical operating current for
12 drives
4.08 A *
1.70 A **
Typical operating current for
24 drives
4.57 A *
1.90 A **
Maximum operating current
for 12 drives
5.58 A *
2.33 A **
Maximum operating current
for 24 drives
6.07A *
2.53 A **
Sequential Drive Group Spin
Up
4.27 A
1.76 A
Simultaneous Drive Spin Up
6.81 A
2.71 A
System Rating Plate Label
9.0 A
3.6 A
* Typical current: 100 VAC, 60 Hz at 0.87 power supply efficiency and 0.99 power factor. These
numbers can vary significantly, depending upon the drives tested in the particular configuration.
**Typical current: 240 VAC, 60 Hz at 0.87 power supply efficiency and 0.99 power factor. These
numbers can vary significantly, depending upon the drives tested in the particular configuration.