The fine print on the Dometic rating plates is usually overlooked, yet is important. It has two ratings:
Yes, it can be run at 50hz, but note the reduced voltage. To be within specs, you really should use a step down transformer to reduce the typical 230V50hz shore power
down to 200V. Most Charles transformers have taps that allow for this, but from what I can tell they are rarely used.
All that said, lots of people just run straight off 230V50hz and most seem to get away with it, but not all.
For anyone who is interested, what's behind this is something called Counter Electro-Motive Force, or counter EMF. I am NOT an expert on this, but have read up a bunch trying to get to the bottom of the "200V" rating on the Dometic AC units, and this is what I came to understand.
The windings in an electric motor
are just wires that, if laid out straight whould be a short circuit. Counter EMF is what prevents them from being a short circuit. The magnetic field created by the motor resists current
flow in what would otherwise be a short circuit. The counter EMF is related to the ratio of the voltage over frequency (V/f). If you let the V/f ratio drop, current
flow increases along with internal heating
of the motor. If it drops too low for too long, you burn out your motor.
Ideally you want to maintain the same V/f ratio for a motor, so when you drop the frequency, you also need to drop the voltage. That's where the somewhat cryptic nameplate rating comes from on the Dometic compressor