Guardian Technologies 4760, 4456, 4390, 4389, 4759, 4758 manual Electrical Formulas

ELECTRICAL FORMULAS

TO FIND	KNOWN VALUES	1-PHASE	3-PHASE
KILOWATTS (kW)	Volts, Current, Power Factor	E x I	E x I x 1.73 x PF
		1000	1000
KVA	Volts, Current	E x I	E x I x 1.73
		1000	1000
AMPERES	kW, Volts, Power Factor	kW x 1000	kW x 1000
		E	E x 1.73 x PF
WATTS	Volts, Amps, Power Factor	Volts x Amps	E x I x 1.73 x PF
NO. OF ROTOR	Frequency, RPM	2 x 60 x Frequency	2 x 60 x frequency
POLES		RPM	RPM
FREQUENCY	RPM, No. of Rotor Poles	RPM x Poles	RPM x Poles
		2 x 60	2 x 60
RPM	Frequency, No. of Rotor Poles	2 x 60 x Frequency	2 x 60 x Frequency
		Rotor Poles	Rotor Poles
kW (required for	Motor Horsepower, Efficiency	HP x 0.746	HP x 0.746
Motor)		Efficiency	Efficiency
RESISTANCE	Volts, Amperes	E	E
		I	I
VOLTS	Ohm, Amperes	I x R	I x R
AMPERES	Ohms, Volts	E	E
		R	R
E = VOLTS	I = AMPERES	R = RESISTANCE (OHMS)	PF = POWER FACTOR

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