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Powering the Shard

Former Community Member
Former Community Member
Afternoon one & all


I know we have single and three phase power, single mainly for domestic and three phase for commercial and small industrial.  But what sort of supply would The Shard have, does it have several 3 phase supplies or does it have an even higher supply that is then lowered via step down transformers to supply the various floors etc?
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  • Former Community Member
    0 Former Community Member
    lyledunn:

    Just as a matter of interest OMS, what type of tx do you specify? I am sure fire safety is a crucial aspect.


    Depends on where they are situated and what type of load profile I'm dealing with


    Externally, or with suppression if used in basements,  with a big variation in load profile, and a credible need to run to emergency ratings then I would use fluid filled hermetically sealed transformers (usually MIDEL or a generic OM16 insulating oil eg Shell Diala)


    Internally, or with high harmonic loads, and where suppression isn't practicable, then dry transformers with a high K factor with or without forced air fans if I needed that overload capability


    I tend to use copper windings on either type - I'm not a big fan of aluminium windings on reasonably low rated transformers (ie up to about 2.5MVA).


    If using dry transformers, I would tend towards combing these as integrated transformer switchboards with the Tier 1 switchgear (up to say 4000A, 80kA 3 second gear)


    As usual, it needs the pro's and con,s of each type evaluating for the specific application by the design engineer - so no simple answer along the lines of "but we always do this when...……………"


    Regards


    OMS


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  • Former Community Member
    0 Former Community Member
    lyledunn:

    Just as a matter of interest OMS, what type of tx do you specify? I am sure fire safety is a crucial aspect.


    Depends on where they are situated and what type of load profile I'm dealing with


    Externally, or with suppression if used in basements,  with a big variation in load profile, and a credible need to run to emergency ratings then I would use fluid filled hermetically sealed transformers (usually MIDEL or a generic OM16 insulating oil eg Shell Diala)


    Internally, or with high harmonic loads, and where suppression isn't practicable, then dry transformers with a high K factor with or without forced air fans if I needed that overload capability


    I tend to use copper windings on either type - I'm not a big fan of aluminium windings on reasonably low rated transformers (ie up to about 2.5MVA).


    If using dry transformers, I would tend towards combing these as integrated transformer switchboards with the Tier 1 switchgear (up to say 4000A, 80kA 3 second gear)


    As usual, it needs the pro's and con,s of each type evaluating for the specific application by the design engineer - so no simple answer along the lines of "but we always do this when...……………"


    Regards


    OMS


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