Puls SL20.303 Data Sheet

All-rounder

SL20.303

EMC and

Low Volt.

Directive

• Input: 3 AC 400V

• Output: 48...56V / 480W (600W)

• 92% efficiency

• Ideal for parallel operation

• Simple fusing

Data sheet

Input

Input voltage 3 AC 400 V, – 15 %, + 20 %

47-63 Hz, suitable for IT power systems

Rated tolerances

• Continuous operation

• Short-term (1 min) at 48 V/10 A

Input current 3 x 1.5 A

Inrush current < 15 A at 440 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

340-479 V AC or 450-700 V DC

300-550 V AC or 370-790 V DC

acc. to 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 48 V/10 A, 400 V AC

Efficiency, Reliability etc.*

Efficiency typ. 92 % (48 V/10 A, 400 V AC)

Losses typ. 42 W (48 V/10 A, 400 V AC)

MTBF 310.000 h acc. to Siemensnorm SN 29500

(48 V/10 A, 400 V AC, T

Life cycle (electrolytics) The unit exclusively uses longlife electrolytics,

specified for +105°C (cf. ’The SilverLine’, p.2). High reliability and lifetime, as

• only four aluminum electrolytics and

• no small aluminum electrolytics are used.

* For further information see data sheets „The SilverLine“,

„SilverLine Family Branches“ and mechanics data sheet

= +40 °C)

amb

UL60950 E137006

CUL/CSA-C22.2

No. 60950

UL508 LISTED

IND. CONT. EQ.

18 WM, 60°C

scheme

IEC60950

Output

Output voltage 48...56 V DC, adjustable by (covered) front

Output noise suppression

Ambient temperature range T

amb

Rated continuous loading with convection cooling

•T

=0°C - 60°C

amb

•T

=0°C - 45°C

amb

Derating typ. 12 W/K (at T

Voltage regulation better than 2 % over all

Ripple < 50 mV

Over-voltage protect. At 61V ± 7%: switch to hiccup mode

Front panel indicators:

• Green LED on, when V appr. 4 V below Vout adjusted (48 V...56 V).

• Red LED on, when appr. 28 V < V

• Red LED flashes, when 0 V < V

Parallel operation Yes, up to ten SL20 units

To achieve current sharing the output V/I characteristic can be altered to be 'softer' (48.8 V at 0.1 A, 48 V at 10 A). This is done by repositioning a bridge connection (without opening the unit).

Power Back Immunity < 63 V

panel potentiometer, preset: 48.1V ±0.5% Adjusting range guaranteed

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

48 V / 10 A (480 W) resp. 56 V / 9 A (504 W) 48 V / 12.5 A (600 W) resp. 56 V / 11 A (616 W) short-term (< 1 min.) also at 60°C permissible

=+60°C...+70°C)

amb

(i.e. < 0.1 %) incl. spikes

20 MHz bandwidth, 50 Ω measurement

> UT, where UT is

out

< U

out

< appr. 28 V.

out

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 right/left 25 mm recommended

1.8 kg

Order information

Order number Description

SL20.303 SLZ02

sl20e303 / 030924 1/2

Screw mounting set, two needed per unit

Data sheet

Start / Overload Behaviour

Startup delay typ. 0.2 s

Rise time appr. 20-80 ms, depending on load

Duration of switch-on attempts at

• Initial application on mains

• Subsequent attempts

Hiccup operation at V

Duration between switch-on attempts

Electronic current limiting, protects against overload and short circuit:

•V

< appr. 28 V: Periodical switch-on attempts (hiccup mode).

out

•V

> appr. 28 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

appr. 1.4 s

appr. 0.5 s

< appr. 28 V

out

appr. 4 s

Output V/I characteristic (typ.)

Vout < ca. 28V: Hiccup mode

Output voltage Vout [V

0 2 4 6 81012141618

Efficiency (typ., at V

Efficiency [%]

24681012

Hold-up time (min., at V

56V / Parallel 56V / Single 48V / Parallel 48V / Single

Output current Iout [A]

=48V)

out

Output current I out [A]

out

340 V AC 400 V AC 480 V AC

=48V)

40% Load

Hold-up time [ms]

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:

60% Load 80% Load 100% Load 125% Load

340 360 380 400 420 440 460 480

Input voltage V ACin [ V]

European

Power Supply

Manufacturers

Association

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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

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