Requirements
Site Preparation
AXP1620 Installation and Use (6806800E23E)
65
3.2.3.2
Power Requirements
Make sure that a suitable -48VDC or -60VDC power source is within reach of the system. Two
power entry modules (PEMs) can be installed in the system. The shelf may require up to 125
amps DC, through 2 80 amp feeds. The required cable size for 80 amps is 4 AWG wire.
Power entry module lug-plastic washer
70°C (158 °F)
>70°C (158 °F) and maximum 90°C (194 °F): the
cables must be isolated and must be approved to
be used in this temperature range.
>70°C (158 °F) and maximum 90° (194 °F): the
service personnel may touch the components: the
cables must be isolated and the "hot surface" icon
must be attached. The cables must be approved
to be used in this temperature range.
Table 3-2 Critical Temperature Limits (continued)
Component
Temperature Limit
Personal or System Damage
The system may be supplied by a TNV-2 voltage. This voltage is considered
hazardous.
Make sure that the power supply unit meets the local safety standards.
Table 3-3 System Power Requirements
Feature Value
Rated voltage
Input current
-40VDC to -60VDC (SELV)
-60VDC to -72VDC (TNV-2)
125A
Operating voltage range
-40.0 to -72VDC
When installing additional blades or modules, make sure that the power consumption
of all installed modules does not exceed the system's maximum power dissipation.
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