CS10.481

C–Series

Nov. 2006 / Rev.1.1 DS-CS10.481-EN

All parameters are specified at 48V, 5A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

www.pulspower.com Phone +49 89 9278 0

Germany

19/20

The unit is tested and approved for branch circuits up to 20A. External protection is only required if the supplying

branch has an ampacity greater than this. In some countries local regulations might apply. Check also local codes and

local requirements.

If an external fuse is necessary or utilized, a minimum value is required to avoid undesired tripping of the fuse.

B-Characteristic

C-Characteristic

Ampacity

max.

20A

20A

min.

10A

6A

Fig. 25-6 Schematic for two phase operation

Fuse

L2

L1

L3

L

N

PE

Power Supply

AC

DC

internal

fused

Instructions for two phase operation:

a)

A phase to phase connection is allowed as long as the

b)

Use a fuse or a circuit breaker to protect the N input. The

N input is internally not protected and is in this case

connected to a hot wire.

Appropriate fuses or circuit breakers are specified in section 25.9

“External Input Protection”.

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 Type IP66 Box PK 9519 100, plastic, 180x180x165mm

Load:

48V, 4A; (=80%) load is placed outside the box

Input:

230Vac

Temperature inside the box:

48.9°C (in the middle of the right side of the power supply with a distance of 2cm)

Temperature outside the box:

23.3°C

Temperature rise:

25.6K