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Chapter 2 ETERNUS DX Disk Storage System Installation
2.6 Circuit Protectors
ETERNUS DX60 S2 Disk storage system User’s Guide -Site Planning-
38
Copyright 2012 FUJITSU LIMITED P3AM-5492-04ENZ0
Figure 2.5 Example of a power supply connection using a power distribution unit (2U)
■ For power distribution unit (1U) connection
The breaking characteristics of distribution board circuit protectors must be slower than the val-
ues shown in Figure 2.6
or equivalent to D (IEC898).
Figure 2.6 Power distribution unit (1U) breaking characteristics (graph)
CP
Distribution
board
CE
Line 0
ETERNUS DX Disk storage system
To power supply facility
CP
Distribution
board
To power supply facility
DE #01
Power distribution unit
Line 1
CP: Circuit Protector
PSU
PSU
PSU
PSU
CPCP
CURVE 200E
100
125
150
200 300 400 500 600 700 800 900 1000
1000
100
10
1
0.1
0.01
0.001
PERCENT LOAD (%)
TIME IN SECONDS