Electric motor type codes

Generally, the farther the code letter from A, the higher the inrush current per hp. A replacement motor with a “higher” code may require different upstream electrical equipment, such as motor starters. Specification of Electric Motors . Synchronous motors: synchronous motors are three-phase.

Maximum ambient temperature for which motor is designed.

Over the years an extensive list of descriptive type codes and frame designations for U.

These product designations supplement the basic horsepower, spee phase and voltage information.

The search function below will give you and . Locked-rotor code letter — When AC motors are . Ac Motors : A motor (see motor definition) operating on a-c current that flows in either direction (AC current) there are two general types : induction, and . ABB offers two types of low voltage induction motor series: Process performance and General performance . The main standards for low voltage motors. In North America, the National Electric Manufacturers Association (NEMA) sets motor standards, including. The indication of the type of power supply for which the motor is designed.

The two main categories are single.

A motor nameplate is normally located on all produced electric motors. Some manufacturers use type to define the motor as single- phase or poly-phase, single-phase or multi-speed or by type of construction. Locked rotor indicating code letters electrical motors.

Nameplate Data for Different Equipment Types. Motors : The National Electric Code requires that motor nameplates include the following information in addition to the manufacturerʼs name and address: Rated voltage(s). Rated full- load amperage at each voltage level (FLA). Frequency – typically or 50hz.

Cogging: A term used to describe non-uniform . When using 4frame and larger motors on PWM type VFDs consider the.

The National Electric Manufacturers Association is the governing body which sets the standards for the manufacture of electrical equipment in the USA, including electric motors. The motor-application engineer matches operating characteristics and load requirements of an application with motor characteristics to provide dependable, economic service at minimum cost.