Breaking Characteristics; Figure 2.4 Power Distribution Unit (2U) Breaking Characteristics (Graph); Table 2.10 Power Distribution Unit (2U) Breaking Characteristics (Trip Time (Sec.)) - Fujitsu ETERNUS DX60 S2 User Manual

Chapter 2 ETERNUS DX Disk Storage System Installation
2.6 Circuit Protectors
2.6.2

Breaking Characteristics

■
For power distribution unit (2U) connection
The breaking characteristics (*1) of distribution board circuit protectors must be slower than the
values shown in
*1: Relationship between the size of excess current and operation time
10000
1000
100
10
1
.1
.01
.001
Figure 2.4
Table 2.10
Delay
63
ETERNUS DX60 S2 Disk storage system User's Guide -Site Planning-
Figure 2.4 or equivalent to D (IEC898).
0 100 150 200 300 400
125
PERCENT OF RATED CURRENT
Power distribution unit (2U) breaking characteristics (graph)
Power distribution unit (2U) breaking characteristics (Trip time (sec.))
100% 125%
No Trip 50 to
700
Copyright 2012 FUJITSU LIMITED
DELAY 63
500 600 700 800 900
150% 200% 400%
30 to 10 to 1.5 to
400 150
37
1000
600% 800%
0.4 to 0.013 to
20 10 0.85
P3AM-5492-04ENZ0
1000%
0.013 to
0.5