The following are needed to connect an Oracle Exadata system to a low-voltage three-
phase power source:
•
2 power cords for two PDUs, 60 amperes at 190 - 220 VAC three-phase
•
3 receptacles to connect the PDUs to 2 IEC 60309 60A 4-pin 250VAC 3ph IP67
data center receptacles
•
(page 1-38) shows the high-voltage 37 kVA three phase PDU power
connector for Europe, the Middle East and Africa (EMEA), and Asia Pacific
(APAC), except for Japan and Taiwan.
1.4.2 Facility Power Requirements
Electrical work and installations must comply with applicable local, state, or national
electrical codes. Contact your facilities manager or qualified electrician to determine
what type of power is supplied to the building.
To prevent catastrophic failures, design the input power sources to ensure adequate
power is provided to the PDUs. Use dedicated AC breaker panels for all power circuits
that supply power to the PDU. When planning for power distribution requirements,
balance the power load between available AC supply branch circuits. In the United
States and Canada, ensure that the overall system AC input current load does not
exceed 80 percent of the branch circuit AC current rating.
PDU power cords are 4 meters (13.12 feet) long, and 1 to 1.5 meters (3.3 to 4.9 feet)
of the cord is routed within the rack cabinet. The installation site AC power receptacle
must be within 2 meters (6.6 feet) of the rack.
1.4.3 Circuit Breaker Requirements
To prevent catastrophic failures, the design of your power system must ensure that
adequate power is provided to the servers. Use dedicated AC breaker panels for all
power circuits that supply power to the server. Electrical work and installations must
comply with applicable local, state, or national electrical codes. Servers require
electrical circuits be grounded to the Earth.
In addition to circuit breakers, provide a stable power source, such as an
uninterruptible power supply (UPS) to reduce the possibility of component failures. If
computer equipment is subjected to repeated power interruptions and fluctuations,
then it is susceptible to a higher rate of component failure.
Note:
Circuit breakers are supplied by the customer. One circuit breaker is required
for each power cord.
1.4.4 Grounding Guidelines
The cabinets for Oracle Exadata Rack are shipped with grounding-type power cords.
Always connect the cords to grounded power outlets. Because different grounding
methods are used, depending on location, check the grounding type, and refer to
documentation, such as IEC documents, for the correct grounding method. Ensure
Chapter 1
Electrical Power Requirements
1-43
