All-rounder
SL20.300
SL20.301
• Input: 3 AC 400V / 3 AC 480V
• Output: 24...28V / 480W (600W)
• 92% efficiency
• Ideal for parallel operation
• Simple fusing
Data sheet
Input
Input voltage SL20.300: 3 AC 400 V, – 15 %, + 20 %
SL20.301: 3 AC 480 V, – 15 %, + 20 %
(SL20.100: AC 230 V, s. separate data sheet)
47-63 Hz, Suitable for IT power systems
Rated Tolerances
• Continuous
operation
• Short term (1 min)
at 24 V/20 A
Input current 3 x 1.5 A
Inrush current < 15 A at 440 V AC, < 17 A at 480 V AC
Inrush current limiting done with a fixed 47R resistor (not a thermistor)
which is bridged after the unit is running, so losses are minimised. That
means no reset time even at a warm-start.
Fuse loading < 2 A
To be fused with a 3 x 10A, B-type 'circuit-breaker' switch based on the
usual thermomagnetic overload sensing principle (used anyway to fuse
the input lines; unit has no internal fuses).
Harmonic current
emissions (PFC)
Transient
handling
Hold up time > 11 ms
Efficiency, Reliability etc.*
Efficiency typ. 92 % (24 V/20 A, Vin
Losses typ. 42 W (24 V/20 A, Vin
MTBF 310.000 h acc. to Siemensnorm SN 29500
Life cycle (electrolytics) The unit exclusively uses longlife electrolytics,
SL20.300: 340-479 V ACresp. 450-700 V DC
SL20.301: 408-576 V AC resp. 550-820 V DC
SL20.300: 300-550 V AC resp. 370-790 V DC
SL20.301: 360-620 V AC resp. 450-890 V DC
2
s
acc. EN 61000-3-2
Active transient filter incorporated, so transient resistance acc.to VDE 0160 / W2 (1300 V /
1.3 ms), for all load conditions.
at 24 V/20 A, Vin
(24 V/20 A, Vin
specified for +105°C (cf. ’The SilverLine’, p.2).
High reliability, as
• only four aluminium electrolytics and
• no small aluminium electrolytics are used.
nom
nom
, T
= +40 °C)
amb
nom
nom
)
)
EMC and
Low Volt.
Directive
UL60950 E137006
CUL/CSA-C22.2
No. 60950
UL508 LISTED
IND. CONT. EQ.
18 WM, 60°C
CB
scheme
IEC60950
Output
Output voltage 24...28 V DC, adjustable by (covered) front
panel potentiometer; preset: 24 V ±0.5%
Adjusting range guaranteed
Output noise suppression
Silent Switcher ™
Ambient temperature
range T
amb
Rated continuous loading with convection cooling
=0°C - 60°C
•T
amb
•T
=0°C - 45°C
amb
Derating typ. 12 W/K (at T
Voltage regulation better than 2% over all
Ripple < 20 mV
Over-voltage protection At 32 V ± 10%: switch to hiccup mode
Front panel indicators: • Green LED on, when V
Parallel operation Yes, up to ten SL20 units
To achieve current sharing the output V/I characteristic can be altered to
be 'softer' (25V at 0.4A, 24V at 20A). This is done by repositioning a
bridge connection (without opening the unit).
Reverse power immunity > 30 V
Radiated EMI values below EN50081-1, even
when using long, unscreened output cables.
Operation: 0°C...+70°C (>60°C: Derating)
Storage: -25°C...+85°C
24 V / 20 A (480 W) resp. 28 V / 18 A (504 W)
24 V / 25 A (600 W) resp. 28 V / 22 A (616 W)
short-term also at 60 °C
=+60°C...+70°C)
amb
(i.e. < 0.1 %) incl. spikes
PP
20 MHz bandwidth, 50 Ω measurement
> UT, where UT is
ca. 2 V below Vout adjusted (24V...28V)
• Red LED on, when 14 V < V
• Red LED flashes, when 0 V < V
out
out
< U
out
T
< 14 V
* For further information see data sheets „The SilverLine“, „SilverLine Family
Branches“ and mechanics data sheet
Order information
Order number Description
SL20.300
SL20.301
SLZ02
sl20e300 / 031001 1/2
400 V input
480 V input
Screw mounting set, two needed per unit
Data sheet
Construction / Mechanics *
Housing dimensions and Weight
•W x H x D
• Free space for
ventilation
•Weight
Design advantages:
• 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.
220 mm x 124 mm x 102 mm (+ DIN rail)
above/below 70 mm recommended
left/right 25 mm recommended
1.8 kg
Output V/I characteristic (typ.)
32
24
16
Vout < ca. 14V: Hiccup mode
Output voltage Vout [V]
8
28V / Parallel
28V / Single
24V / Parallel
24V / Single
Start / Overload Behaviour
Startup delay typ. 0.2 s
Rise time ca. 20-80 ms, depending on load
Duration of switch-on attempts at
• Initial application
ca. 1.4 s
on mains
• Subsequent
ca. 0.5 s
attempts
Hiccup operation at V
Duration between
out
ca. 4 s
< ca. 14 V
switch-on attempts
Electronic current limiting, protects against overload and short circuit:
< ca. 14 V: Periodical switch-on attempts (hiccup-mode).
•V
out
•V
> ca. 14 V: The output current is continuous.
out
The V/I characteristic of the supply is straight.
Advantages of the switch-on/overload behaviour:
• Safer switch-on into highly non-linear loads with large
starting currents
• Short-term overloads result in current limiting and not in
an immediate shut-down.
• Parallel operation of several units possible.
Proper switch-on performance is obtained.
Further Information
For further information, especially about
•EMC
• Connections
• Safety, Approvals
• Mechanics und Mounting,
see page 2 of the „The SilverLine“ data sheet.
For detailed dimensions
see SilverLine mechanics data sheet SL20
0
0 5 10 15 20 25 30 35
Efficiency (typ., at V
95
94
93
92
91
90
89
Efficiency [%]
88
87
86
85
84
4 8 12 16 20 25
Hold-up time ((typ., at V
60
40
20
Hold-up time [ms]
Output current Iout [A]
=24V)
out
340 V AC
400 V AC
480 V AC
Output current Iout [ A]
=24V)
out
40% Load
60% Load
80% Load
100% Load
125% Load
All data is valid for SL20.300.
For SL20.301 (with 480 V input) some values may differ.
Specifications valid for 3 x AC 400V input voltage, +25°C ambient temperature, and 5 min run-in time, unless otherwise stated. They are subject to change without prior notice.
Your partner in power supply:
0
340 360 380 400 420 440 460 480
Input voltage VACin [V]
European
Power Supply
Manufacturers
Association
Bayerns Best 50
Czech 100 Best
Europe’s 500
PULS GmbH
Arabellastraße 15
D-81925 München
Tel.: +49 89 9278-0
Fax: +49 89 9278-199
www.puls-power.com
2/2 sl20e300 / 031001