Effective sizing of contactors in control of industrial electric motors
Effective sizing of contactors in control of industrial electric motors
(OP)
Please fellow engineers, i'm facing d problem of effective sizing of contactor to be used in connection of motor controls. Please i need the mathematical relation. Thank you all





RE: Effective sizing of contactors in control of industrial electric motors
Mathematical relation? What input variables - kW, voltage, LRA, inertia, motor type, operation type, duty cycle, altitude, environment, load's time constant and characteristics and much more?
Gunnar Englund
www.gke.org
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RE: Effective sizing of contactors in control of industrial electric motors
RE: Effective sizing of contactors in control of industrial electric motors
old field guy
RE: Effective sizing of contactors in control of industrial electric motors
RE: Effective sizing of contactors in control of industrial electric motors
Are you referring to the selection of a contactor for a given motor load, or are you actually designing a contactor -- including contact size, geometry, material, contact pressure, arc quenching, coil, case, and all else?
Best to you,
Goober Dave
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RE: Effective sizing of contactors in control of industrial electric motors
Gunnar Englund
www.gke.org
--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.