This is an IEC terminology system, not meant for North America. It means:
1 = single (1) phase conductor. For them, 2 "hot" conductors out of a 3 phase distribution scheme is called "2 phase", which has a totally different meaning here.
N = Neutral, meaning the current return path for a grounded secondary of a distribution system
PE = Protected Earth, our equivalent of an EGC
So understand that basically in most other countries, there is no single phase distribution system, everyone gets 3phase, even if they only USE it as single phase. In general, the "harmonized" official voltage is 400Y230V, so people get 400V phase to phase, 230V phase to Neutral. So in this piece of equipment they are telling the installer to connect only 1 phase + the Neutral to get 230V, then a separate equipment grounding conductor (protected just means an insulated grounding conductor).
Our 240V distribution system however does not work that way, single phase for us is 240V line to line, not line to neutral. If they are not using internal ground connections for components inside of the unit, and they should not be, then all that really matters is that you give it the 240V. But do NOT give it one hot + N from our distribution system, because that will be only 120V.
However, if under8ed is correct and it can accept anything from 100-300V, then even 120V should work, but the current draw would be twice what it would be at 240V. At 10kVA, that's a lot of 120V current.
