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Mellanox provides a 15 Ampere cord (2 meter jumper) that has a universal plug for a PDU (power
distribution unit) with each supplied sPSU-S power unit. For more info, See "Power Supply Unit
(sPSU-S)" on page 26.. The cord is detachable from the sPSU-S unit. The cable wiring standard is:
3x14AWG.
If you do not use the power cords supplied by Mellanox, the power cords should be rated for 15A
or higher.
The following table details the power usage characteristics per sPSU-S unit.
Table 11 - sPSU-S - Detailed Power Usage Data
Attribute
Power entry
Power rating
Nameplate power rat-
ing (VA)
Output: 48Vdc @
29A
Nameplate power rat-
ing at 100V
Nameplate power rat-
ing at 200V
Power factor (W/VA)
Power supply effi-
ciency
2.4.2 Power Redundancy (N:1 and N:N)
The Vantage 8500 switch features hot-swappable power supply units that can work in N:1 or N:N
redundancy mode.
A non-redundant power configuration includes the minimum number of power supplies required
by the system for operation.
•
N:N redundancy means that each non-redundant power supply is fully backed up by a redun-
dant power supply, which is routed to a different power source. This provides for full power
backup in case the first power source is disconnected. Not available on a fully populated chassis.
•
N:1 means that all of the system non redundant power supplies are connected to a single power
source and are backed up by one spare power supply.
•
N:M is for spare power supplies. N stands for required units, while M stands for spares. This
covers 2:1, as well as 3:2 redundancies.
Specification
85-265 Volts, 50-60 Hz, auto sensing
1400 Watts per module @220V and 1200
Watts @ 100V
Input: 100V-240Vac @ 16A;
12 A
8 A
0.98 typical at 230 VAC, full load; 0.98
typical at 115 VAC, full load
89% typical at 230 VAC, full load rated
power; 85% typical at 115 VAC, full load
rated power
Comments
Watts = Volts X Amps X
Power Factor
Measures the ability of the
power supply to convert
source AC power into usable
DC power
Mellanox Technologies
Rev A04
35
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