Electricity for Air Conditioning & Refrigeration II - Glossary of Electrical Terminology

Vocabulary flashcards for electrical terminology in air conditioning and refrigeration, covering terms 031 through 040.

Reactance

Opposition to the change of flow of alternating current by inductance or capacitance.

Rotating Field

An electrical field set up by alternating current in a motor that behaves as though the magnetic poles were moving around the winding.

Rotor

Rotating part of an electric motor.

Run Load Amps (RLA)

The running amps of a motor at full capacity. Same as full load amps (FLA).

Run Winding

Main winding of a single phase motor that has low resistance.

Service Factor

A measurement for self-cooled motors that states the percent horsepower the motor can perform beyond its nameplate rating.

Single Phase Motor

A motor that operates on single phase alternating current.

Slip

Rotor speed drag expressed as the difference between rotor speed and the speed of the motor's rotating magnetic field.

Split Phase Motor

A single phase motor that has an auxiliary start winding 45-90 degrees electrically away from the main winding.

Squirrel Cage Winding

An induction winding of uniformed conductors distributed around the periphery and joined by continuous end rings. Referred to as a rotor of and induction motor.