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Permanent magnet motors consist of two main types. Surface permanent magnet motors (SPM) and internal permanent magnet (IPM) motors. The main difference is that SPM motors place the magnets on the outside of the rotor while IPM motors place their magnets inside the motor. Benefits to internal magnets include structural integrity and reducing ...
Fires involving live electrical equipment (Class C in the American system; Class E in the Australian system) need to be put out with equipment that will not conduct its energy back to the user as is the case with water. Electricity can also cause fires of the other classes. [1]
A fire class is a system of categorizing fire with regard to the type of material and fuel for combustion.Class letters are often assigned to the different types of fire, but these differ between territories; there are separate standards for the United States (NFPA 10 Chapter 5.2.1-5.2.5), Europe (DIN EN2 Classification of fires (European Standard) ISO3941 Classification of fires ...
CO 2 extinguisher Fire extinguisher that releases carbon dioxide gas to displace oxygen to smother and cool a fire, such as a flammable liquid. Combination nozzle A low pressure fog nozzle (usually 120 to 150 lbf/in² or 820 to 1030 kPa that can be adjusted to produce a near straight stream. Also commonly referred to as a Taskforce tip (TFT).
Monoammonium phosphate, also known as ABC dry chemical, tri-class, or multipurpose, is used on class A, B and C fires. It receives its class A rating from the agent's ability to melt and flow at 374 °F (190 °C) [27] to smother the fire. It is more corrosive than other dry chemical agents and is pale yellow in color. Sodium bicarbonate ...
The most common extinguisher is the ABC extinguisher and are found in most offices and homes. It can be used on normal fires, liquid fires, and electrical fires. There are also special extinguishers for kitchen fires and for use on burning metals, those being Class K and Class D respectively. [3]
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