XT40.481 datasheet(3/20 Pages) PULS

3 / 20 page

XT40.481, XT40.482

– X-Series

48V, 20A, THREE-PHASE INPUT

Jan. 2007 / Rev. 1.0 DS-XT40.48x-EN All parameters are specified at 48V 20A, 3x400Vac (XT40.481) or 3x480Vac (XT40.482),

25°C ambient and after a 5 minutes run-in time unless otherwise noted.

www.pulspower.com Phone +49 89 9278 0

Germany

3/20

5. AC-INPUT

XT40.481

XT40.482

AC input

nom.

3AC 400V

3AC 480V

Mains arrangement

TN-, TT- or IT-Mains

consult factory if one phase is earthed

AC input range

min.

3x 360-440Vac 3x 432-528Vac fully regulated output (±2%), Pout > 48W

min.

3x 300-460Vac

3x 360-552Vac

permanently allowed,

see Fig. 5-1 for output voltage regulation

max.

3x 475Vac

3x 565Vac

Absolute maximum input voltage with no

damage to the power supply. Output

might be off at this level.

Input frequency

nom.

50 – 60Hz

±6%

Turn-on voltage

typ.

3x 325Vac

3x 390Vac

see Fig. 5-2

Shut-down voltage

typ.

3x 295Vac

3x 355Vac

see Fig. 5-2

Input current

nom.

1.65A

1.4A

at 20A, symmetrical input, see Fig. 5-4

Power factor **)

typ.

0.93

at 20A, symmetrical input, see Fig. 5-5

Turn-on overshoot

typ.

1000mV

see Fig. 5-3

Start-up delay ***)

typ.

400ms

350ms

over the entire load range, see Fig. 5-3

Rise time

typ.

40ms

0mF, 20A, see Fig. 5-3

typ.

70ms

20mF, 20A, see Fig. 5-3

A minimum voltage of 3x340Vac (XT40.481) or 3x408Vac (XT40.482) is required to turn the power supply on.

**)

The power factor is the ratio of the true (or real) power to the apparent power in an AC circuit.

***)

The start-up delay for mains voltage interruptions up to 350ms is close to zero. In such cases, the power supply will

immediately generate the output voltage once the mains voltage interruption is over. Do not use the buffer module

UF20.481 as an accessory when longer mains interruptions need to be bridged (see chapter 24).

Input Voltage Range

Fig. 5-1 Output voltage vs. input voltage and input current

Changes of the input voltage will be fully

regulated

within

certain

limits.

The

output voltage will only start to change

proportionally to the input voltage with

extreme under or over-voltages. The

yellow LED reports an input voltage

problem if exceeded by a window of

±15%. The maximum increase of the

output voltage is limited to the 57.2V

OVP

level.

This

level

will

kept

regulated for 2s before the power supply

will shut down and reports “Shut-down”

by the red LED.

48V

40V

52V

44V

420

340

480Vac

320

504

456

576Vac

384

XT40.481:

VOUT

VIN

XT40.482:

400

360 380

440

480

460

300

56V

528 552

432

408

360

POUT > 48W (>5%)

POUT = 0W

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