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VFSG question

Posted: Thu Sep 01, 2016 12:28 pm
by PrzemekB
Hi,

Im reading electrical description of 787, especially starter/generator and I have got something like this:

""The kVA rating is over a load power factor range from 0,85 to 1.0 lagging and over the complete operational frequency range"

what does it mean?

Thanks in advance

Re: VFSG question

Posted: Thu Sep 01, 2016 8:38 pm
by aklrno
Is it possible they meant "power factor" and not "load factor"? That would make more sense to me. You can google both terms.

Re: VFSG question

Posted: Thu Sep 01, 2016 10:12 pm
by rcair1
PrzemekB wrote:
Hi,

Im reading electrical description of 787, especially starter/generator and I have got something like this:

""The kVA rating is over a load power factor range from 0,85 to 1.0 lagging and over the complete operational frequency range"

what does it mean?

Thanks in advance

It means they can deliver the rated kVA into a load with a lagging power factor from 0.85 to 1.0 and for any frequency in the operating range.

Power factor is related to the inductance of the load and the lag between the current and voltage wave form.