Datasheet

ML15.051

MiniLine

5V, 3A, SINGLE PHASE INPUT

22.8. OPERATION ON TWO PHASES

240V

+10%

max.

Fuse

Power Supply

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

voltage is below 240V+10%. 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 22.3 “External Input Protection”.

22.9. USE WITHOUT PE ON THE INPUT

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. In

such cases the PE terminal will change to an EMI ground terminal. Be aware that a connection to ground or earth of

this terminal must be done in the same manner as it would be a “real” PE terminal. (wire size, isolation, …)

Connecting this terminal can be beneficial to gain 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

19/21

EMI-ground

Power Supply

Surge

Power Supply

Spike

24V

Oct. 2009 / Rev. 1.2 DS-ML15.051-EN

All parameters are specified at 5V, 3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.