UK Cheap Motor Insurance Glossary
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AC (ALTERNATING CURRENT)
The commonly available electric power supplied, an AC generator and is distributed in single or three-phase forms. AC current changes its direction of flow (cycles).
AC MOTORS
A Motor (see motor definition) operating on AC current that flows in either direction (AC current). There are two general types: Induction, and Synchronous.
Accidental Means
Unexpected or undesigned cause of an accidental bodily injury. Under a definition of accidental means, the mishap itself must be accidental, not just the resulting injury.
ACTIVE IRON
The amount of steel (iron) in the stator and rotor of a motor. Usually the amount of active iron is increased or decreased by lengthening or shortening the rotor and stator (they are generally the same length).
Actuary
A specialist in the mathematics of insurance who calculates rates, reserves, dividends and other statistics
Adjuster
A representative of the insurer who seeks to determine the extent of the insurer's liability for loss when a claim is submitted
Air Filtration System
System that cleans smog, pollen, exhaust, smoke and odors out of the air. Cleans both interior circulated air and that coming from the outside.
AIR GAP
The space between the rotating (rotor) and stationary (stator) member in an electric motor.
AIR PRESSURE SWITCH
Used on motors with blowers to measure the difference in pressure across the filter so as to detect a clogged filter.
AIR TEMPERATURE SWITCH
A device used in air hooded motors to detect the temperature of the exhausted air. When used in this manner an air temperature switch will detect blockage in the cooling air system or long-term motor overload.
ALTITUDE
The atmospheric altitude (height above sea level) at which the motor will be operating; NEMA standards call for an altitude not exceeding 3,300 ft. (1,000 meters). As the altitude increases above 3,300 ft. and the air density decreases, the air stability to cool the motor decreases - for higher altitudes higher grades of insulation or a motor derating are required. DC motors require special brushes for high altitudes.
AMBIENT TEMPERATURE
The temperature of the surrounding cooling medium, such as gas or liquid, which comes into contact with the heated parts of the motor. The cooling medium is usually the air surrounding the motor. The standard NEMA rating for ambient temperature is not to exceed 40ƒC.
ANTI-FRICTION BEARING
An anti-friction bearing is a bearing utilizing rolling elements between the stationary and rotating assemblies.
Anti-Lock-Braking System
A braking system that senses when any of the wheels have locked up, or are about to, and automatically reduces the braking forces to keep the wheels rolling. Commonly called ABS, such a system can control all four wheels or only two.
ARMATURE
The portion of the magnetic structure of a DC or universal motor which rotates
