PIC480.241C, PIC480.241C-C1
PIANO-Series
24V,
20A,
480W,
S
INGLE
P
HASE
I
NPUT
Mar. 2021 / Rev. 1.2 DS-PIC480.241C-EN
All parameters are typical values specified at 24V, 20A output, 230Vac input , 25°C ambient and after a 5 minutes run-in time
unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
19/19
22.5.
S
ERIES
O
PERATION
Power supplies of the same type can be connected in series for higher
output voltages. It is possible to connect as many units in series as needed,
providing the sum of the output voltage does not exceed 150Vdc. Voltages
with a potential above 60Vdc are not SELV any more and can be dangerous.
Such voltages must be installed with a protection against touching.
Earthing of the output is required when the sum of the output voltage is
above 60Vdc.
Avoid return voltage (e.g. from a decelerating motor or battery) which is
applied to the output terminals.
Keep an installation clearance of 15mm (left / right) between two power supplies and avoid installing the power
supplies on top of each other.
Pay attention that leakage current, EMI, inrush current, harmonics will increase when using multiple power supplies.
22.6.
I
NDUCTIVE AND
C
APACITIVE
L
OADS
The unit is designed to supply any kind of loads, including capacitive and inductive loads. If extreme large capacitors,
such as EDLCs (electric double layer capacitors or “UltraCaps”) with a capacitance larger than 1.5F are connected to the
output, the unit might charge the capacitor in the Hiccup
PLUS
mode (see chapter 6).
22.7.
C
HARGING OF
B
ATTERIES
Do not use the power supply to charge batteries.
22.8.
O
PERATION ON
T
WO
P
HASES
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%
.
22.9.
U
SE IN A
T
IGHTLY
S
EALED
E
NCLOSURE
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 Type IP66 Box PK 9519 100, plastic, 180x180x165mm
Input:
230Vac
Load:
24V, 16A; (=80%) load is placed outside the box
Temperature inside the box:
51.5°C (in the middle of the right side of the power supply with a distance of 1cm)
Temperature outside the box:
25.5°C
Temperature rise:
26.0K
Unit A
AC
DC
Unit B
AC
DC
-
+
-
+
Load
+
-
Earth
(see notes)
240V
+10
%
m
ax.
Fuse
L2
L1
L3
L
N
PE
Power Supply
AC
DC
internal
fuse
