Bryant ASPAS1BBA015 Manuel d'utilisateur télécharger pdf (Page 143)

Page 143

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

VOLTS Ohm, Amperes I x R I x R

AMPERES Ohms, Volts E E

E = VOLTS I = AMPERES R = RESISTANCE (OHMS) PF = POWER FACTOR

ELECTRICAL FORMULAS

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Bryant ASPAS1BBA015 Manuel d'utilisateur Page 143