ML15.121

MiniLine-2

Fuse

L2

L1

L3

L

N

PE

Power Supply

AC

DC

internal

fuse

The power supply can also be used on two-phases of a three-phase-system.

Such a phase-to-phase connection is allowed as long as the supplying

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

22.4 “External Input Protection”.

From a safety standpoint, the unit is internally designed according to the requirements for Protection Class 1 and 2.

Please contact PULS if you do not plan to use the PE terminal. A different marking of the front foil is then required.

Grounding of the input is beneficial for a high EMI immunity: Symmetrical spikes or fast transients on the input side

can be conducted directly to earth by the built-in filter capacitors. The magnitude of such spikes or fast transients on

the output side caused by the input is much smaller compared to not connecting this terminal to ground.

Fig. 22-3 Earthed input

Fig. 22-4 Not earthed input

Surge

Y

X

L

N

Ground

Power Supply

+

-

Surge

X

L

N

Power Supply

+

-

24V

Spike

Mar. 2013 / Rev. 2.1 DS-ML15.121-EN

All parameters are specified at 12V, 1.3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

www.pulspower.com Phone +49 89 9278 0

Germany

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