Rockwell Automation Publication 1606-RM109A-EN-P - August 2020
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Power Supply —12V, 10 A, 120 W, Single Phase
Operation in 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%. Ensure that
the wire, which is connected to
the N-terminal, is
appropriately fused. The
maximum allowed voltage between a Phase and the PE must be
below 300V AC.
Use in a Tightly Sealed Enclosure
When the device 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 device.
In the following test setup, the device is placed in the middle of the box, no
other heat producing items are inside the box. The load is placed outside the
box.
The temperature sensor inside the box is placed in the middle of the right side
of the power supply with a distance of 1 cm.
The following measurement results can be used as a reference to estimate the
temperature rise inside the enclosure.
Attribute
Value
Case A
Case B
Enclosure size
110 x 180 x 165 mm
Rittal Typ IP66 Box PK 9516
100, plastic
110 x 180 x 165 mm
Rittal Typ IP66 Box PK 9516
100, plastic
Input voltage
230V AC
230V AC
Load
12V, 8 A; (=
80%
)
12V, 10 A; (=
100%
)
Temperature inside the box
40.7 °C (105.3 °F)
43.2°C (109.8 °F)
Temperature outside the box
27.9°C (82.2 °F)
28.0°C (82.4 °F)
Temperature rise
12.8 K
15.2 K
