Uh Oh! Your turn JPG.BuckeyeDennis wrote:For 3-phase power,JPG wrote:1.73?
P = SQRT(3) × V_line × i_line × cos(theta)
DC3300 - suggestions, upgrades, etc??
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Re: DC3300 - suggestions, upgrades, etc??
John & Mary Burger
Eagle's Lair Woodshop
Hooper, UT
Eagle's Lair Woodshop
Hooper, UT
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JPG
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Re: DC3300 - suggestions, upgrades, etc??
Θ = V/I phase shift? Would that not vary between motors?BuckeyeDennis wrote:For 3-phase power,JPG wrote:1.73?
P = SQRT(3) × V_line × i_line × cos(theta)
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Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
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Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
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BuckeyeDennis
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Re: DC3300 - suggestions, upgrades, etc??
Correct. The cos(theta) term is called "power factor". It varys, but generally not a whole lot for induction motors of a similar size. The NEC, for example, specifies conductor sizing based on motor continuous-power rating alone. And we're just looking for a rough-but-honest way to compare woodworking-machine motors.
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