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Fujitsu DX60S2 User Manual

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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 
 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
CP
CP
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