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Sample PDU Usage Calculation
7-4
Express5800/320Ma: Site Planning Guide
Sample PDU Usage Calculation
Table 7-3
shows how to use the information from
Table 7-1
to calculate the current
when the PDU is connected to a NEMA L6-20R receptacle in the United States, with a
power voltage of 208V.
Table 7-4
and the explanation which follows show how to use the information from
Table 7-3
to determine when you need to buy an additional pair of PDUs or calculate
the size and number of cabinets you need.
In this calculation, components were added one by one, calculating:
•
The total current demanded by the components
•
The total space used in the rack
•
The total number of outlets required
Table 7-3. Sample: Current and Rack-Space Requirements
Component
Watts Current
Rack
Space
Express5800/320Ma Dual-Core
system
650
3.91A
4U
KVM switch
20
0.12
1U
Table 7-4. Sample: Calculating A-Side PDU and Rack-Space Requirements
1. Component
2. Cumulative
Space Used (U)
3. Cumulative
Number of
A-Side Outlets
4. Cumulative
Current (A)
PDU pair
2
0
0.00
Express5800/320Ma 3.2 GHz, 3.6
GHz, or Dual-Core system
6
1
3.91
KVM switch
8
3
4.15
Express5800/320Ma 3.2 GHz, 3.6
GHz, or Dual-Core system
15
5
11.06
PDU pair
19
0
0
Express5800/320Ma 3.2 GHz, 3.6
GHz, or Dual-Core system
23
1
3.91
Express5800/320Ma 3.2 GHz, 3.6
GHz, or Dual-Core system
29
3
9.62
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...