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Yes they are different classifications in motors, we was just after the calculation/formula to show/prove we are making savings in kwh's to justify the new energy efficient motors. We want to do a survey around site to see which will be the most cost effective motors to do next I might be...

Yes these 'like for like' motors that we have swapped I am just looking for an explanation using numbers to show we are making a saving even though pulling more Amps I appreciate all your help with this!

KW = 1.732*KV*Amps*PF*Eff New Motor: 1.732 x 0.415 x 301 x 0.803 = 174kw Old Motor: 1.732 x 0.415 x 243 x 0.875 = 152kw This still shows the new motor using higher kw

Thank you Edison Last question How did you calculate this: Old motor pf X eff = 0.875 New motor pf X eff = 0.803

Thanks again Is it as simple just to do the 3 phase power formula to show this? I would just like to see it as numbers to make it clear in my mind - apologies

New Motor: https://files.engineering.com/getfile.aspx?folder=842b71cc-c616-468a-8eb2-9a51707e98c8&file=New_motor_(VSD).jpg https://files.engineering.com/getfile.aspx?folder=bad072d2-e26b-4ffc-9662-019c1b3adb00&file=New_Motor_(nameplate).jpg Old Motor...

Thank you all for the comments, some very helpful information I am going to upload the 2 motor name plates and VSD HIM information

Hi All Apologies for a random but maybe a very simple question, last week we replaced an IE2 200kW motor for an IE4 200kW motor The FLC on the existing IE2 was 318A and the FLC on the new IE4 motor is 347A at 415V - both 4 pole - controlled via VSD The new IE4 motor pulls quite a bit more...