Ciena CN 3960, Руководство по установке оборудования, Страница: 11 / 72

CN 3960 Hardware Installation Guide
7
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VERVIEW
H
ARDWARE
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VERVIEW
1
Power Options
The CN 3960 has redundant power supplies which are accessed from the rear of the
chassis. The power supplies are available in both AC and DC. Because the power to the
unit is redundant, the power supplies are hot swappable and field replaceable. During
power supply replacement, the remaining power supply will compensate to maintain
uninterrupted system operation.
Table 1-3 provides a summary of the available power options:
When only one power supply is to be installed, it should be located in the bay labelled
PS A. When facing the back of the unit, PS A will be the left bay. See Figure 1-3. The
second power supply bay must be covered with a filler plate. The filler plate is necessary
for safety and to ensure proper airflow within the CN 3960.
Figure 1-3:
Rear of CN 3960
When two power supplies are installed, the power supplies provide system power
simultaneously (load sharing).
WARNING: In configurations with two AC power supplies, each power supply must be
connected to a separate input circuit.
Table 1-3: Power Supply Options
Module Part number Power range Power usage Breaker
AC Power Supply
170-0100-901
100 to 240 VAC, 50/60 Hz,
3.0 - 2.4 A
171 Watts 15 Amps
DC Power Supply
170-0101-901
-48 to 60 VDC, 4.0 A 173 Watts 5 Amps
Note: When two power supplies are installed, use power supplies of the same type. Do not combine AC and DC
power supplies in the same installation. This is an untested configuration and is not supported.
PS A
PS B
Fans
Grounding Screws
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