Specify the motor ambient temperature and elevation.  In the example below, with an ambient temperature of 45^oC at 2000m above sea level, the effective motor continuous torque de-rating factor is:

The motor de-rating load factor is applied to the continuous torque curve as illustrated in Motor Torque vs Speed for rotary motors and in Motor Force vs Speed for linear motors.

Drive

Specify the drive ambient temperature and elevation.  In the example below, with an ambient temperature of 50^oC at 2000m above sea level, the effective drive continuous current de-rating load factor is:

The drive de-rating load factor is applied to the inverter rated continuous current as illustrated in Motor Torque vs Speed for rotary motors and in Motor Force vs Speed for linear motors as well as the infeed and bleeder rated continuous power.

Depending on how a drive's peak valus are rated, the load factor can also be applied to the inverter peak current rating and the infeed and bleeder peak power ratings. This is dependent on the drive database variable 'LF_Typ'.

Related topics

  Motor Torque vs Speed
  Motor Force vs Speed