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Isolating transformer

Ben22
I’m looking to create a training board for apprentices and trying to come up with a way to allow energisation but keeping any faults created separate from the installation, 


im thinking of using an isolating transformer. Unless anyone can suggest another method?
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    This forum feels like a specialist club, since I was once Head of the Electrical Department of the CEGB Training Centre in Leeds "Whitehall Road".?

    When I was responsible for completely refurbishing this in the late 80s, the main electrical safety precautions were a main contactor with residual current protection (separate CT), widely distributed emergency stop buttons, locking off for isolation, good discipline and supervision.  Reduced voltages were in use as appropriate. I’m stretching my memory, but I don’t remember a situation where , supplying at reduced voltage such as 25v centre tapped (standard for portable lighting) or 12V  DC wasn’t sufficient.  We ran some large motors and MG sets, three phase and DC, but with everything “boxed up” and the greater danger being heavy rotating machinery. Our HV switchgear didn’t use any HV except for a 5kv megger. We had some derogations from the CEGB safety rules to reflect the reduced risk designed in, but this was a former Power Station and I had to issue permits etc under the rules for some circumstances.


    Sadly I don’t have a record now for posterity, although the facility which trained me and where I later became a trainer, before moving up to Leeds is here. http://www.cegbmidreg.co.uk/ptc/ptcmenu.htm


    PS Mike, I have found many of your contributions excellent and informative , as I have said in another forum my capability is more “ex” than “expert”      ?

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  • 0
    This forum feels like a specialist club, since I was once Head of the Electrical Department of the CEGB Training Centre in Leeds "Whitehall Road".?

    When I was responsible for completely refurbishing this in the late 80s, the main electrical safety precautions were a main contactor with residual current protection (separate CT), widely distributed emergency stop buttons, locking off for isolation, good discipline and supervision.  Reduced voltages were in use as appropriate. I’m stretching my memory, but I don’t remember a situation where , supplying at reduced voltage such as 25v centre tapped (standard for portable lighting) or 12V  DC wasn’t sufficient.  We ran some large motors and MG sets, three phase and DC, but with everything “boxed up” and the greater danger being heavy rotating machinery. Our HV switchgear didn’t use any HV except for a 5kv megger. We had some derogations from the CEGB safety rules to reflect the reduced risk designed in, but this was a former Power Station and I had to issue permits etc under the rules for some circumstances.


    Sadly I don’t have a record now for posterity, although the facility which trained me and where I later became a trainer, before moving up to Leeds is here. http://www.cegbmidreg.co.uk/ptc/ptcmenu.htm


    PS Mike, I have found many of your contributions excellent and informative , as I have said in another forum my capability is more “ex” than “expert”      ?

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