IBM Z10 BUISNESS CLASS Z10 BC, Installation Manual

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The power supplies at the front end of the system use active resistive load
synthesis. Harmonic distortion of the current waveform is small enough that it need
not be considered in planning the installation. The power factor is typically 0.95 or
higher.
The utility current distribution across the phase conductors (phase current balance)
depends on the system configuration. Each front end power supply is provided with
phase switching redundancy. The loss of an input phase is detected and the total
input current is switched to the remaining phase pair without any power interruption.
Depending on the configuration input power draw, the system can run from several
minutes to indefinitely in this condition. Since most single phase losses are
transients which recover in seconds, this redundancy provides protection against
virtually all single phase outages.
Supply Type
Nominal Voltage Range
(V)
Voltage Tolerance
(V)
Frequency Range
(Hz)
Two redundant
3-phase line cords
200-480 180-509 47-63
Two redundant
single -phase line
cords
200-415 180-440 47-63
Source Type Frequency
Input Voltage Range
(V)
Rated Input Current
(A)
Single or Three-phase
power
50/60 Hz 200 - 240V 24A
Single or Three-phase
power
50/60 Hz 380 - 415V 16A
Three-phase power 50/60 Hz 480V 14A
Level 03c, May 2011
40
z10 BC IMPP