Figure 20 Breaking Characteristics Of Distribution Board Circuit Protectors - Fujitsu ETERNUS AB Series Site Planning Manual

1. ETERNUS AB/HB Installation
Outlet/Socket Specifications
■
Breaking Characteristics
The breaking characteristics (*1) of the distribution board circuit protectors must be the long-time
delay type and must be equivalent to or slower than the D (IEC/EN60898-1) shown in
If the distribution board's circuit protectors have a breaking characteristic that is faster than D, the
breaker may trip when a power supply unit in the storage system fails. When the breaker trips, a
shutoff occurs on multiple power supply units connected to the same connection line as the failed
power supply unit.
*1: Relationship between the size of excess current and operation time

Figure 20 Breaking Characteristics of Distribution Board Circuit Protectors

180
120
60
40
20
10
6
4
2
1
40
20
10
6
4
2
1
0.6
0.4
0.2
0.1
0.06
0.04
0.02
0.01
1 1.5 2
Current (ratio for the current rating)
B C D
3 4 5 6 7 8 10 15 20 30 40 50 80 100
45
Figure 20.
Site Planning Guide