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LED inrush current and generator set

Julien Leblanc
Hello,


I'm currently working on a sport field application where i need to power some LED reflectors (30 kW total).

I will also use a generator set, in case the network fails.


The inrush current of the reflectors is 3 times higher than their rated current, but the duration is only 0.2ms.


Could anybody tell me if i should take into account the inrush current when I choose the generator set power (that is, to oversize the generator)?

Or i should ignore the inrush current and set the power of the generator a bit higher than the total power of the reflectors?

I'm not talking about the circuit breakers of generator's outputs. Let's say one can choose them so that they don't trip.

If those breakers don't trip, is it possible that anything else happen to the generator set, because of the inrush current?


I've been searching through the specifications of many generator sets, but i cannot find any data on this specific problem (short overload).






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    broadgage:

    The inrush current drawn by LED lamps is extremely brief and unlikely to have significant effects on a generator.

    I would however be inclined to oversize the generator on general principles, life and reliability will be enhanced by not running right at the limit.

    Load tends to grow.

    LED lights may have an odd waveform, also making oversizing prudent.


    They don't say anything about the waveform or harmonics... They only specify the power factor, which is 0.95.


    The theory says that a generator should ideally be loaded at 70...90% of its capacity.

    Oversizing considering that those 30 kW represent 70...80% of the generator capacity is enough, in your opinion?

    Considering that, in the future, only small changes in the load will be made...



     


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  • 0
    broadgage:

    The inrush current drawn by LED lamps is extremely brief and unlikely to have significant effects on a generator.

    I would however be inclined to oversize the generator on general principles, life and reliability will be enhanced by not running right at the limit.

    Load tends to grow.

    LED lights may have an odd waveform, also making oversizing prudent.


    They don't say anything about the waveform or harmonics... They only specify the power factor, which is 0.95.


    The theory says that a generator should ideally be loaded at 70...90% of its capacity.

    Oversizing considering that those 30 kW represent 70...80% of the generator capacity is enough, in your opinion?

    Considering that, in the future, only small changes in the load will be made...



     


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