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TECHNICAL SIMULATOR

CURRENT MOTORS

SINGLE PHASE MOTORS

Result

Full load current
Efficiency

Rated current for single phase motor

  • I: Current absorbed by the motor. (A)
  • P: Motor rated power, shaft power. (W)
  • U: Tension. (V)
  • η: Efficiency. (%)
  • cos ϕ: Power factor before compensation.

Grades:

Full load current values correspond to motors operating at usual speed and motors with normal torque characteristics. The voltages shown are the nominal ones of the motors.

For operating voltages other than those shown here, multiply the current obtained by the standard voltage and then divide by the required operating voltage.

Adaptation of table 430.248 of the NEC 2017. Estimated efficiency values with a power factor of 85%.


THREE PHASE MOTORS

Result

Full load current
Efficiency

Rated current for three-phase motor

  • I: Current absorbed by the motor. (A)
  • P: Motor rated power, shaft power. (W)
  • U: Tension. (V)
  • η: Efficiency. (%)
  • cos ϕ: Power factor before compensation.

Grades:

The full load current values correspond to motors operating at the usual speed of belt motors and motors with normal torque characteristics. The voltages listed are the nominal ones of the motors.

Adaptation of table 430.250 of the NEC 2017. Estimated efficiency values with a power factor of 85%.