Instruction manual

2. Preparation for Installation
104
Series
model
Current (peak
value)
Time
AC (PoE) model
40A
50 ms or less
Redundant power model
20A
10 ms or less
AX3640S
AC model
20A
10 ms or less
Redundant power model
20A
10 ms or less
AX3650S
Redundant power model
25A
10 ms or less
AX3830S
Redundant power model
25A
10 ms or less
External power unit (EPU)
EPU-A
30A
10 ms or less
EPU-B
40A
50 ms or less
NOTE
For easy operation, it is recommended that the distribution board should be
installed in the same room as the Switch or the adjacent room.
(3) Conditions for the incoming power to the distribution board
The capacity of electrical current supplied to the distribution board should be larger than
that of the breaker operating current.
Ensure that the capacity of incoming current to the distribution board should be
larger than the breaker operating current capacity. Otherwise, the breakers cannot
operate properly in case of trouble, which might cause a fire.
NOTE
Generally, the breaker operating current is larger than the rated current. Check the
specifications of the circuit breaker.
In addition, if you power on the Switch, it has inrush current listed in Table 2-13 Inrush
current. Consider measures to prevent voltage reduction of the power supply due to inrush
current.
CAUTION
If you power on the Switch, it has inrush current. Consider measures to prevent
voltage reduction of the power supply due to inrush current. If voltage reduction
occurs, not only the Switch but also other devices connected to the same power
supply are affected.
(4) Providing two power supply systems to the electrical power equipment
To build a redundant power supply system, use another system of electrical power
equipment to supply power.