Determining PDU Requirements
7-2
Express5800/320Ma: Site Planning Guide
N O T E S
1. Connect each PDU to a separate AC power source.
2. Install a maximum of two pairs of PDUs in a rack.
Use the information in
“Determining PDU Requirements” on page 7-2
to plan the rack
configuration for your Express5800/320Ma system.
“Sample PDU Usage Calculation”
on page 7-4
shows how to use the information you gather for planning the rack
configuration.
Determining PDU Requirements
Using the nominal voltage rating of the power receptacle at your site and the total
wattage of the components that will draw power from the A-side PDU, complete the
information in Tables
7-1
and
7-2
. This information will help you determine the current
that the Express5800/320Ma 3.2 GHz, 3.6 GHz, and Dual-Core systems and
rack-mounted components will draw and whether you need a second pair of PDUs.
To complete
Table 7-1
1. Obtain the voltage available at your location. Consult a facilities manager at your
site to make sure you know the correct voltage.
2. For each type of component you plan to place in the rack, calculate the required
current, as follows: Divide the wattage of the element, listed in the Watts column of
Table 7-1
, by the voltage available at your site. Multiply the result by 1.25 and enter
the value in the Current column.
Table 7-1. Current and Rack-Space Requirements
Component
Watts Current
Rack
Space
Express5800/320Ma 3.2 GHz, 3.6
GHz, and Dual-Core
650
4U
KVM switch
20
1U
Summary of Contents for Express5800/320Ma
Page 1: ...NEC Solutions America Inc NR573 Express5800 320Ma Site Planning Guide...
Page 10: ...Preface x Express5800 320Ma Site Planning Guide...
Page 18: ...System Documentation 1 8 Express5800 320Ma Site Planning Guide...
Page 40: ...Connecting a System Directly to a UPS 5 6 Express5800 320Ma Site Planning Guide...
Page 50: ...Sample PDU Usage Calculation 7 6 Express5800 320Ma Site Planning Guide...
Page 77: ...Standards Compliance Standards Compliance C 3 VCCI Note BSMI Note...
Page 78: ...Standards Compliance C 4 Express5800 320Ma Site Planning Guide...