Reference Manual User guide

All parameters are specified at 48V, 5A, 230Vac, 25°C ambient and after a 5 minutes run-in time, unless noted otherwise.
26 Rockwell Automation Publication 1606-RM045A-EN-P — March 2014
Bulletin 1606 Switched Mode Power Supplies
23.12. Operation on Two Phases
240V
+15%
max.
Fuse
L2
L1
L3
L
N
PE
Power Supply
AC
DC
internal
fuse
The power supply can also be used on two phases of a three-phase-system.
Such a phase-to-phase connection is allowed as long as the supplying
voltage is below 240V+15%. Use a fuse or a circuit breaker to protect the N
input. The N input is internally not protected and is in this case connected to
a hot wire. Appropriate fuses or circuit breakers are specied in section 23.4,
“External Input Protection”.
23.13. Use in a Tightly Sealed Enclosure
When the power supply is installed in a tightly sealed enclosure, the temperature inside the enclosure will be higher
than outside. In such situations, the inside temperature denes the ambient temperature for the power supply.
The following measurement results can be used as a reference to estimate the temperature rise inside the enclosure.
The power supply is placed in the middle of the box, no other heat producing items are inside the box
Enclosure: Rittal Typ IP66 Box PK 9519 100, plastic, 180x180x165mm
Load: 24V, 8A; (=80%) load is placed outside the box
Input: 230Vac
Temperature inside enclosure: 47°C (in the middle of the right side of the power supply with a distance of 2cm)
Temperature outside enclosure: 27°C
Temperature rise: 20K