Running cost of an electric motor
Running cost of an electric motor
(OP)
Can anyone give a formula for the running cost of an electric motor from a three phase supply 24/7 for a year
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Running cost of an electric motor
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RE: Running cost of an electric motor
Methinks you were looking for something else, but of course your question was a little sparse on details. Are you unable to measure the kW consumption? Isn't there a load connected to your motor? Are you looking to estimate cost based only on motor nameplate data? Does your utility penalize you for poor power factor? Are you going to correct your pf? The list goes on and on.
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RE: Running cost of an electric motor
damscot, Try browsing this site. This topic was discussed in great detail within the last few weeks.
yours
RE: Running cost of an electric motor
RE: Running cost of an electric motor
The requested formula for 1 year motor operation:
E = 1.732xAmps x VoltsLL x PF x 24(hrs) x 365(days)
Cost = E x $(per 1kWH)
E = Total electric energy consumption in 1 year given in kWH.
Amps = average RMS line current of the three phases.
VoltsLL = average RMS voltage line to line(3 phases)
PF = motor power factor on the nameplate or from the motor manufacturer performance data.
Penalties due to maximum demand and excesive low power factor will add some extra cost depending on the utility regulations.
RE: Running cost of an electric motor
respectfully