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Rockwell Automation Publication 1606-RM110A-EN-P - July 2020
Redundancy Power Supply - 24V, 10 A, 240 W, Single-phase Input
Operation on Two Phases
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+10%.
The maximum allowed voltage between a Phase and the PE must be below
300V AC.
Figure 40 - Operation on Two Phases
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 defines 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.
24
0V
+10%
max
.
L2
L1
L3
L
N
PE
Power Supply
AC
DC
Case A
Case B
Case C
Case D
Enclosure Size
Rittal Typ IP66 Box PK 9519 100, plastic
110
x1 80 x 165 mm
Rittal Typ IP66 Box PK 9519 100, plastic,
180
x 180 x 165 mm
Input Voltage
230V AC
Load
24V, 8 A; (=80%)
24V, 10 A; (=100%)
24V, 8 A; (=80%)
24V, 10 A; (=100%)
Temperature inside enclosure
45.4 °C (113.72 °F)
49.0 °C (120.2 °F)
42.0 °C (107.6 °F)
44.4 °C (111.92 °F)
Temperature outside enclosure
25.0 °C (77 °F)
25.0 °C (77 °F)
25.0 °C (77 °F)
25.0 °C (77 °F)
Temperature rise
20.4 K
24.0 K
17.0 K
19.4 K