Oh no.... not another isolation transfomer question.... Hey this ones different and I need some advice.
I have no isolation transformer and I am just about to fit one.
Currently, I have a device that makes sure the AC is between 190 and 260v, or 80 and 130v depending where I am. It also stops spikes so this is good when starting the AC generator
sometimes you get 400v instead of 220v when at a marina as the 220v is tapped off the 3 phase... so any error and you might get 400v down the wires. This blows up all 220v appliances
switch on at the time. I have seen this a few times.
I have a 3 way switch to choose between shore power
. Then comes the special voltage and spike control device mentioned above.
This means that the shore power
voltage is controlled and also the generator is controlled so all 220v devices are protected against high voltage and spikes.
When I install the isolation transformer then I have 2 possibilities ...
1 - Install it on the shore power line before the selection switch which is the correct place ... however then it is not protected against high voltage from the shore power. Victron says the 220v transformer cannot handle 400v up it without damage, so I would like to do option 2.
2 - Install the Isolation transformer after the voltage protection device....This way the transformer is protected against high voltage to.
However then (depending on the selection switch position) the transformer would receive its input power from either...shore power or the generator or the inverter
So my question is .... would this matter??
I have thought about it and it seems ok to me....or am I missing the point??