QT20.361

Q-Series

Oct. 2006 / Rev. 1.0 DS-QT20.361-EN

All parameters are specified at 36V, 13.3A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

www.pulspower.com Phone +49 89 9278 0

Germany

The power supply can be put in series to increase the output voltage.

Fig. 27-13 Schematic for series operation

Instructions for use in series:

Unit B

-

+

Load

+

-

AC

DC

AC

DC

-

+

Unit A

Earth

(see notes)

a)

It is possible to connect as many units in series as needed,

providing the sum of the output voltage does not exceed

150Vdc.

b)

Voltages with a potential above 60Vdc are not SELV any

more and can be dangerous. Such voltages must be installed

with a protection against touching.

c)

For serial operation use power supplies of the same type.

d)

Earthing of the output is required when the sum of the

output voltage is above 60Vdc.

e)

Keep an installation clearance of 15mm (left/right) between

two power supplies and avoid installing the power supplies

on top of each other.

Note: Avoid return voltage (e.g. from a decelerating motor or

battery) which is applied to the output terminals.

The unit is designed to supply any kind of load, including unlimited capacitive and inductive loads.

When the power supply is installed in a tightly sealed enclosure, the temperature inside the enclosure will be higher

than outside. The inside temperature defines the ambient temperature for the power supply.

Results from such an installation:

Power supply is placed in the middle of the box, no other heat producer inside the box

Enclosure:

Rittal Typ IP66 Box PK 9519 100, plastic, 180x180x165mm

Load:

36V, 10.7A; (=80%) load is placed outside the box

Input:

3x400Vac

Temperature inside enclosure:

55.7°C (in the middle of the right side of the power supply with a distance of 2cm)

Temperature outside enclosure:

23.8°C

Temperature rise:

31.9K

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