The following question concerns single-phase power units conversion calculations, which have left this user baffled. The question has been answered by the NICEIC (Theme – Power):
1) kVA to amps = kVA divided by Volts x 1000 = amps
Example: 10 divided by 230 x 1000 = 43.4782 amps
2) kVA to kW = kVA x Power Factor = kW
Example: 10 x 0.8 = 8 kW
…but:
3) kW to amps = kW x 1000 divided by Volts = amps
Example: 8 x 1000 divided by Volts = 34.78 amps
Notice that calculations 1 and 3 both show a different answer for the amps - why?
Answer: Please see the attached document from a recent version of the NICEIC connections magazine. This explains the kVA to amps conversion and gives a few worked examples for you.
Please click on the link near the bottom of this page to download the attachment (PDF doc - 2.2MB file size).
To see many more Q & A in Voltimum UK's Experts Area, please click on the link:
www.voltimum.co.uk/consult.php?universe=consult.index.questions