Wiring And Power; Table A-6 Site Wiring Voltages For System Enclosures (Single-Phase Line-To-Neutral) - Silicon Graphics Total Performance 9300 User Manual

Wiring and Power

007-4644-001
The enclosure is a 120/220 VAC, 50/60 Hz unit that meets standard voltage requirements
for both domestic (USA) and international operation. It uses standard industrial wiring
with a line-to-neutral power connection (see Table A-6). Review the following
specifications when preparing the controller enclosure installation site:
• Earth ground: The unit must be properly grounded, including an earth ground
conductor on the AC power source.
• Circuit overloading: Make sure the power circuits and associated circuit breakers in
the rack and building provide sufficient power and overload protection. To prevent
possible damage to the unit, isolate its power source from large switching loads (for
example, air conditioning motors, elevator motors, factory equipment, and so on).
• Power interruptions: The unit will withstand the following voltage interruptions:
• Input transient: 50% of nominal voltage
• Duration: One half-cycle
• Minimum frequency: Once every 10 seconds
• Power failures: Once power is restored after a complete power failure, the unit
automatically performs a power-on recovery sequence without operator
intervention.
• Power supply voltage range: The wide-ranging, redundant 175-W power supplies
operate on 90–264 VAC at 50 or 60 Hz. The power supplies meet domestic and
international requirements and can operate at any voltage within the specified
range.
Table A-6 Site Wiring Voltages for System Enclosures
(Single-phase Line-to-neutral)
Frequency
50 Hz Nominal 100
Minimum 90
Maximum 107
60 Hz Nominal 100
Minimum 90
Maximum 107
Range
127 220 230 240
114 198 207 216
136 235 246 264
120
104
127
Enclosure Specifications
93