Product Manual

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• Maximum ambient temperature in centigrade – usually +40°C
(104°F).
• Duty - most motors are rated continuous. Some applications, how-
ever, may use motors designed for intermittent, special, 15, 30 or
60 minute duty.
• NEMA electrical design - B, C and D are most common. Design
letter represents the torque characteristics of the motor.
• Insulation class - standard insulation classes are B, F, and H. NEMA
has established safe maximum operating temperatures for motors.
This maximum temperature is the sum of the maximum ambient and
maximum rise at maximum ambient.
• Code - indicates locked rotor kVA per horsepower.
• Service factor – a measure of continuous overload capacity.
• Inverter Speed range information – 3-Phase motors
• Manufacturer Agency Approval information - UL, CSA, CE etc.