Oracle Netra SPARC S7-2, Installation Manual

Page: 19 / 102

Input Power Information
Parameter AC DC
Input treatment N/A Isolated DC Return (DC-I)
Caution -
The ports of this equipment or subassembly are suitable for connection to intra-
building or unexposed wiring or cabling only. The intra-building port(s) of the equipment or
subassembly must not be metallically connected to interfaces that 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 6) 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, except the ethernet ports.
Caution -
Mixing power supply types (AC and DC) is not allowed.
Related Information
■
“Physical Specifications” on page 17
■
“Input Power Information” on page 19
■
“DC Power Source, Power Connection, and Grounding Requirements” on page 21
■
“Overcurrent Protection Requirements” on page 20
■
“Environmental Requirements” on page 22
■
“Acoustic Noise Emissions” on page 23
■
“Airflow Precautions” on page 24
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.
Confirming Specifications 19