1. ETERNUS AX/HX Installation
Outlet/Socket Specifications
Site Planning Guide
39
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Breaking Characteristics
Figure 18 Breaking Characteristics of Distribution Board Circuit Protectors
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
0.01
0.02
0.04
0.06
0.1
0.2
0.4
0.6
1
2
4
6
10
20
40
1
2
4
6
10
20
40
60
120
180
1
1.5 2
3 4
5 6 7 8 10
15 20
30 40 50
80 100
Current (ratio for the current rating)
Oper
ation time
D
C
B
Minut
es
Seconds
Summary of Contents for ETERNUS AX Series
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