SL20.1010 pages

Single-Phase Power
CB
scheme

SL20.100

IEC60950

Data sheet

UL508 LISTED
IND. CONT. EQ.
18 WM, 60°C

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Input: AC 230V
Output: 24-28V / 480W (600W)
91% efficiency
Ideal for parallel operation
Simple fusing

Input
Input voltage

EMC and
Low Volt.
Directive

Output
AC 230V, +15%, – 20%
47...63Hz
(SL20.300/.301: 3 AC 400/480V,
see separate data sheet)

Rated Tolerances
• Continuous
operation
• Short term (1 min)
at 24 V/20 A

AC 184...264V resp.
DC 270...370V
AC 170...280V resp.
DC 250...400V

Input current

5A

Inrush current

typ. 33A at AC 264V

Inrush current limiting done with a fixed 15R 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

UL60950 E137006
CUL/CSA-C22.2
No 60950

<10A2s

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.

Output voltage

DC 24-28V adjustable by (covered) front panel
potentiometer, preset: 24.0V ±0.5%
Adjustment range guaranteed

Output noise
suppression

Radiated EMI values below EN61000-6-3, even
when using long, unscreened output cables.

Ambient temperature
range Tamb

Operation: 0°C...+70°C (>60°C: Derating)
Storage: -25°C...+85°C

Rated continuous loading with convection cooling
• Tamb=0°C - 60°C
• Tamb=0°C - 45°C

24V/20A (480W) resp. 28V/18A (504W)
24V/25A (600W) resp. 28V/22A (616W)
short-term also at 60°C

Derating

typ. 12W/K

Voltage regulation

better than 2% over all

Ripple
• Output charact. S
• Output charact. P

(incl. spikes (20MHz bandw.), 50Ω measurem.)
<20mVPP (<0.1%)
<40mVPP (In: AC 230V, Out: 24V/20A)
<100mVPP (In: AC 184V, Out: 24V/20A)

(S/P: Single/Parallel Mode)

(at Tamb= +60°C...+70°C)

Harmonic current
emissions (PFC)

SL20.100 on request
SL20.101 acc. to EN61000-3-2

Over-voltage
protection

Transient
handling

Active transient filter incorporated, so transient resistance acc.to VDE 0160 / W2 (750V/
1.3ms), for all load conditions.

Hold up time

>20ms
at AC 230V, 24V/20A

Front panel indicators: • Green LED on, when Vout > UT, where UT
is ca. 2 V below Vout adjusted (24V...28V)
• Red LED on, when 14V < Vout< UT
• Red LED flashes, when 0V < Vout < 14V
Parallel operation

At 33V ±10%: switch to hiccup mode

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).

Efficiency, Reliability etc.*
Efficiency

typ. 91%

(AC 230V, 24V/20A)

Losses

typ. 48W

(AC 230V, 24V/20A)

MTBF

310.000h acc. to Siemensnorm SN 29500
(24V/20A, AC 230V, Tamb = +40°C)

Life cycle (electrolytics)

The unit exclusively uses longlife electrolytics,
specified for +105°C (cf. ’The SilverLine’, p.2).
High reliability, as
• only four aluminium electrolytics and
• no small aluminium electrolytics are used.

* For further information see data sheets „The SilverLine“,
„SilverLine Family Branches“ and mechanics data sheet

Power Back Immunity

>30V

Construction / Mechanics *
Housing dimensions and Weight
• WxHxD
• Free space for
ventilation
• Weight

220mm x 124mm x 102mm (+ DIN rail)
above/below 70mm recommended
left/right 25mm recommended
SL20.100: 1800g
SL20.101: 2400g

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.

Order information
Order number
SL20.100 (Basic version*),
SLS20.100 (Safety Cover*),
SLZ01
sl20e100 / 050923

Description
including PFC: SL20.101
including PFC: SLS20.101
Screw mounting set,two needed per unit
1/2