Datasheet

sl20e310 / 030709 1/2
Data sheet
All-rounder with
safety
SL20.310
• Input: 3 AC 400-500V
• Output: 24-28V / 490W
• Power boost up to 600W
• Separate primary fuse not necessary
• Switchable operating mode
(single/parallel)
• Switchable overload behaviour
options (Fuse Mode)
Short description
Input
This compact power supply unit is characterised by the variety of possi-
bilities of application and low system costs. The fact that the external
fuses are no longer necessary is an advantage as it saves cost and
space. The switchable Fuse Mode and the extremely comprehensive
approvals package including EN60204 make the SL20.310 the unit of
choice.
At a competitive price, it also offers 25A power boost, output noise
suppression, optional Single Mode or Parallel Mode, small dimen-
sions, more than 500,000h MTBF as well as easy installation. The unit
can be connected to European and American power supply networks
without switching.
Nominal Input voltage 3 AC 400-500V, ±15%
47-63Hz, suitable for IT power systems
Rated tolerances
• Continuous operat. AC 340...576V resp. DC 450...820V
• Please ask for 'application notes' at operation with DC input voltage.
Input current 3 x 1.5A
Inrush current <2.5A eff. resp. <7A
pk
Unit is internally fused (fuse not accessible). For external fusing of unit
and for input line protection, use circuit breaker with B-characteristic
10A or slower action, or alternatively T10A HBC fuse.
2-phase operation: Operation is possible even if one phase fails. With
high ambient temperature or high load, P
out
is adjusted downwards.
The red LED is on. Also see Overload Behaviour (overleaf).
EN 61000-3-2 (harmonic current emissions [PFC]) is fulfilled
Transient handling Active transient filter incorporated, so tran-
sient resistance acc. to VDE 0160 / W2
(1300V/1.3ms) for all load conditions.
Hold-up time >11ms
at 24.5V/20A, V
in
: AC 400V
Output
Construction / Mechanics*
Output voltage DC 24-28V adjustable by (covered) front
panel potentiometer, preset: 24.5V ±0.5%
Adjusting range guaranteed
Output noise suppression
Silent Switcher ™
Radiated EMI values below EN50081-1, even
when using long, unscreened output cables.
Ambient temperature
range T
amb
Operation: 0°C...+70°C (>60°C with Derating)
Storage: -25°C...+85°C
Derating 12W/K (@ T
amb
= +60°C...+70°C)
Rated continuous loading with convection cooling
•T
amb
=0°C - 60°C
•T
amb
=0°C - 45°C
24.5V/20A (490W) resp. 28V/18A (504W)
24.5V/25A (612W) resp. 28V/22A (616W)
short-term (<1 min.) also at 60°C admissible
Output is protected against short-circuit, open circuit and overload.
Voltage regulation <2% static, jumper in ’Single Mode’ position
Ripple/Noise <30mV
PP
(< 0.1%) incl. spikes
(20MHz bandw., 50 Ω measurement)
Overvolt. protection At 33V ±10%: switch to hiccup mode
Power back immunity max. 35V
Parallel operation Yes, up to ten SL20
To achieve current sharing:
• Plug jumper into pos. 'Output parallel use'. This alters the output V/I
characteristic to be 'softer' (25V at 2A, 24V at 20A). The output voltage
can still be adjusted.
• Missing jumper = 'Single Use', i.e. 'hard' characteristic
Front panel indicator:
• Green LED on, when V
out
= set output voltage
• Red LED on, when V
out
< set output voltage
(with overload and overtemp. as well as overload with 2-phase op.)
• Red LED flashes after switch-off in the Fuse Mode
Housing dimensions and Weight:
• W x H x D
• Weight
150mm x 124mm x 121mm (+ DIN Rail)
1.8kg
• Recomm. free space for conv. cool.: above/below 70mm, left/right 25mm
• All connection blocks are easy to reach as mounted at the front panel
• PVC insulated cable can be used for all connections, as the connection
blocks are mounted in the cooler area on the underside of the unit.
Order information
Order number Description
SL20.310
SLZ01
(Screw mounting set, two needed per unit)
CUL/CSA-C22.2
EMC and
Low Volt.
UL60950 E137006
UL508 LISTED
IND. CONT. EQ.
No 60950
18 WM, 60°C
Directive
CB
scheme
IEC60950
Type approval
• IEC / EN60950
• EN50178
• EN60204
acc. to:
Overvolt. cat. III