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  • Users: mikhe
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  1. mikhe

    Convert 50hz to 60Hz

    I need to test a genset that is destined for the USA 60Hz market. I need to do a parallel and load acceptance test but I only have 50Hz here in the UK. I have tried to get hold of some diesel rental sets at 60Hz but the market seems to have swallowed them all up. Does anyone know of a way to...
  2. mikhe

    HV or LV

    I have an application that requires a genset to support the load on a cement works. The mill has a 2.8 MW motor at 6.6kV. The site auxiliaries and other standing load is 1.5MW at 400V. This genset will run at base load and let the utility take any starting loads. Should I generate at 6.6kV and...
  3. mikhe

    Load Factor

    Could someone explain to me the deffinition of Load Fatcor and what we would use the data for. My question refers to a sentence in a genset manual which says "Prime duty refers to operation in island mode with a fluctuating load where average load factor is 75%"
  4. mikhe

    Low wattage lighting

    Can anyone recommend a lighting scheme for me? I will soon be asking a contractor to rewire my home and replace standard ceiling lights with sunken spot lights (or something similar). The spotlights available in the UK seem to be standard at 40W and at that I will be using 6 to eight...
  5. mikhe

    How much power do I need

    How much power do I need to start a 600 kW motor DOL. Is there a calcuation I can use to quickly determine this. Our electrical engineers will do actual calcs for the final design, but what I would like to do is a quick calc to understand, plus or minus 10%, what a generator would see as the...
  6. mikhe

    AC alternator core length

    In specifying an alternator (2000 kVA) why would I need to consider the core length? I am being given four choices F,G,H & J for the same voltage and kVA rating.
  7. mikhe

    CT saturation with differential protection

    A customer of ours is insisting on a greater X/R ratio, i.e. 10 as opposed to 6 as specified, they say this is to accommodate the potential CT saturation. Could someone explain CT saturation? CT = Ratio 1500/1 Class 0.1PL370R11 Max Secondary Resistance @ 75DegC 11ohm Relay GE Multilin SR...

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