Input Power Information - Sun Oracle NETRA SPARC T4-1 Installation Manual

connect to the outside plant wiring. These interfaces are designed for use as
intra-building interfaces only (Type 2 or Type 4 ports as described in GR-1089-CORE,
Issue 4) and require isolation from the exposed outside plant cabling. The addition of
primary protectors is not sufficient protection in order to connect these interfaces
metallically to outside plant wiring.
Caution – The intra-building port(s) of the equipment or subassembly must use
shielded intra-building cabling or wiring that is grounded at both ends.
Related Information
"Input Power Information" on page 11
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"Overcurrent Protection Requirements" on page 12
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"DC Power Source, Power Connection, and Grounding Requirements" on page 13
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"Physical Specifications" on page 9
■
"Environmental Requirements" on page 14
■
"Acoustic Noise Emissions" on page 15
■
"Airflow Clearance" on page 16
■

Input Power Information

The total input power for the server is divided equally among the power supplies in
operation. Reversing the positive and negative inputs to the power supplies of a DC
input server will not cause damage. However, the power supplies with reversed
input will not operate.
The inputs to a power supply are isolated from the server chassis and the other
power supply inputs. The AC or DC power inputs might be at different voltages
within the acceptable range and might have different offset voltages relative to the
server chassis.
Note – The server does not require an additional surge protector for the AC power
configurations if the facility has a surge protector that limits voltage surges to less
than 2000V. You can, however, install a surge protector if your site requires an
additional protector.
Confirming Server and Site Specifications 11