Data Sheet

QS40.241
Q-Series
24V, 40A, SINGLE PHASE INPUT
25.11. OPERATION ON TWO PHASES
240V
+10%
max.
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
+10%
.
25.12. 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
Enclosure: Rittal Typ IP66 Box PK 9522 100, plastic, 254x180x165mm
Load: 24V, 32A; (=80%) load is placed outside the box
Input: 230Vac
Temperature inside enclosure: 68.6°C (in the middle of the right side of the power supply with a distance of 2cm)
Temperature outside enclosure: 24.3°C
Temperature rise: 44.3K
Oct. 2014 / Rev. 1.2 DS-QS40.241-EN
All parameters are specified at 24V, 40A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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