OP
Guest111
Oh yes,and then 99 times out of a 100 you're wrong.It well could have, but then it should have a label on stating what it requires. Us leccies know everything except when it comes to the opposite sex..
Discuss 3 phase supply size in the UK Electrical Forum area at ElectriciansForums.net
Oh yes,and then 99 times out of a 100 you're wrong.It well could have, but then it should have a label on stating what it requires. Us leccies know everything except when it comes to the opposite sex..
If you buy a 4 kW motor it will be 5.5HP regardless of whether it's single phase or 3-phase. I'd respectfully suggest that 4kW indicates the total energy consumption regardless whether it's a single phase or 3-phase motor.If you get a motor and it says 4kw 400v then its per phase.
If you buy a 4 kW motor it will be 5.5HP regardless of whether it's single phase or 3-phase. I'd respectfully suggest that 4kW indicates the total energy consumption regardless whether it's a single phase or 3-phase motor.
I would expect the 7.8kW stated in the OP to be the total energy consumption so it would be 7.8kW across 3 phases.
As Nick says above, don't take my word for it, give them a call and confirm.
Your tutor knows his stuff.Allan, my course tutor, has just told me that (in his opinion) if the plate on a 3 phase motor says (eg) 10kW, that's the total consumption.
Yes Marvo im getting the impression my old school terminology differs but just to confirm a 4KW motor means it output 4KW of energy down the shaft it is not what it consumes, my thinking really here as i mentioned is its wrong to ask if the KW is across the phases or per phase as the KW has no electrical meaning its a modern convertion of horse power ratings.
You wouldn't ask if the horse power is per phase or across them you would ask if the plated ampage is if anything... this is why I have approached it the opposite way and yes confused matters but the OP's back and getting relevant info'
Ill hold my hands up ad say my advice was incorrect in the way it was given and i should have explained it better by giving the KW to I equation expressing the KW is a energy available at shaft and requires the calculation to turn it into something more meaningful.
Your tutor knows his stuff.
As DW says p41 does give it away somewhat!
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I think clicking on the link "product manuals" under more information from the OP link may have given a clue!I sourced this off a different website - the OP didn't have this info - Karcher could be more informative on their original spec ...we can only guess the motor might have some form off soft start hence I would still ring Tech' on this matter.
Reply to 3 phase supply size in the UK Electrical Forum area at ElectriciansForums.net
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