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Siemens Isolating Transformer

Yassir Khalil

Good Afternoon Everyone, I have a question which Im getting conflicting information about and would appreciate the advice.

I have a Siemens Transformer model number 4AM6542-8DD40-0FA0 Ive attached photos of the transformer itself. 
My input supply L1-L2 measured 427 volts and I require a 230 volt output 

can some please shed some light on whether or not I need links and how to connect to this transformer. My understanding so far is 1 and 8 input then connect external link across 3 and 6, some people are saying to connect input to 3&6 

secondary side connected to 31&34 and then link 32 to 33. 
34 being the neutral output which will share 0v neutral and CPC/Earth 

Many Thanks In advance 

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    yes that would be my preferred safe starting point, then see with a meter if it's good enough for your purposes.

    if its not, note the voltages on all the primary tap points counting up from 1 - 8 and come back if you cannot see what you need.

    Mike

    PS edit approx voltages of winding segments estimated from simultaneous equations. 
    First winding 
    1-2 175 volts

    2-3 35V  (so 1-3 is 208)

    2-4 22V  (so 1-4 is 230)

    Second winding 

    5-6 is 80V (so 5-8 is 350V )

    6-7 is 22V ( so 6-8 is 230V)

    7-8 is 208V


    and 208 (1-3 )+ 230 (6-8) is 438, so perhaps slightly higher than ideal but the available steps are quite course,

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  • 0

    yes that would be my preferred safe starting point, then see with a meter if it's good enough for your purposes.

    if its not, note the voltages on all the primary tap points counting up from 1 - 8 and come back if you cannot see what you need.

    Mike

    PS edit approx voltages of winding segments estimated from simultaneous equations. 
    First winding 
    1-2 175 volts

    2-3 35V  (so 1-3 is 208)

    2-4 22V  (so 1-4 is 230)

    Second winding 

    5-6 is 80V (so 5-8 is 350V )

    6-7 is 22V ( so 6-8 is 230V)

    7-8 is 208V


    and 208 (1-3 )+ 230 (6-8) is 438, so perhaps slightly higher than ideal but the available steps are quite course,

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