Sorry I missed that...yes the extra turns the same as the rest of them... 3 in hand.
Fun undoing it isn't it..... use the three bearings to straighten the wire.
For 48v systems:
Audio cable is about 20mmsq.. so if your going to run this thing hard, then two in hand, if you don't expect longish periods over 1- 2 kw, then one in hand will squeak through.
For the primary we want to know the volts/turn... did you happen to get the turns number when you unwound?
If not..... I am guessing it is about 1.1v/turn, so you will want about 30 turns on the primary for 48v... 15 for 24v and definately 2 in hand and more for lower voltages, and more for higher powers too.
To make certain, you can connect 240v into the 230v winding, and wind a few turns on to get the volts/turn on the new turns. You will have to soften the startup as the fuses will likely blow. You can use a globe and then bypass it when operating..... check the voltage on the 230v winding, and the turns on the test winding.... just to make sure 240v is available or thereabouts.
When you get the turns/volt or volts/turn in this case, divide it into 33v to get the turns you want... for 48v system.......... ie 33/1.1v=approx 30 turns ......scale to match other voltages.
It is a physical thing working on these transformers for sure.
keep at it.
.....................oztules