What is a totally enclosed air over motor?

What does air over motor mean?

Air-over: Motors for fan or blower service and cooled by the air stream from the fan or blower.

What is an enclosed motor fan?

A Totally Enclosed, Fan-Cooled (TEFC) electric motor is a type of industrial electric motor with an enclosure that does not permit outside air to freely circulate through the interior of the motor. An external fan blows outside air over the frame of the motor to cool it.

Which atmosphere totally enclosed type enclosure for motor is used in?

Totally Enclosed Air Over (TEAO)

This motor enclosure has no fan. It is used in applications where it already gets plenty of air, such as in the plenum of an AC/Heating system. This is a dust-tight enclosure.

What is a motor enclosure?

PetroWiki. An enclosure protects a motor from contaminants in the environment in which it is operating. In addition, the type of enclosure affects the cooling of the motor. Enclosures are categorized as either open or totally enclosed, and there are different types of enclosures within each category.

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What does totally enclosed air over mean?

Totally Enclosed Air Over/Airtight (TEAO)

This motor has a dust-tight frame or enclosure. It is typically installed in the airstream, and the air movement generated by the fan passes over the motor to provide cooling. TEAO motors would be used in areas with direct drive where the motor is in the airstream.

What are 4 common types of motor enclosures?

The Most Common Types Of Electric Motor Enclosures

  • The most common types of enclosures are:
  • Open Drip Proof (ODP)
  • Weather Protected (WP1 / WP2)
  • Totally Enclosed Fan Cooled (TEFC)
  • Totally Enclosed Non-Ventilated (TENV)
  • Totally Enclosed Air Over (TEAO)
  • Totally Enclosed Forced Ventilated (TEFV)
  • XP (Explosion Proof)

Can a Tefc motor be used outdoors?

A totally enclosed, fan-cooled (TEFC) motor is much more adaptable to outdoor locations and high moisture areas. With a bit of care, you can expect this type of motor to work well and have a long life.

What is the difference between an AC and DC motor?

The most basic difference is the power source. A.C. motors are powered from alternating current (A.C.) while D.C. motors are powered from direct current (D.C.), such as batteries, D.C. power supplies or an AC-to-DC power converter.

What is the difference between ODP and Tefc Motors?

NAPCES ODP idler motors are completely safe to use in all indoor industrial settings. On the other hand, a totally enclosed fan cooled, or TEFC motor has a closed off chamber which requires the use of an external fan to blow air over it.

What are the two types of motor enclosures?

The two general classifications of motor enclosures are open and totally enclosed. An open motor has ventilating openings which permit passage of external air over and around the motor windings. A totally enclosed motor is constructed to prevent the free exchange of air between the inside and outside of the frame.

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What is a WPI motor enclosure?

Weather Protected Type 1 (WPI) – As you might expect, the Weather Protected Type enclosures are for outdoor use. Their purpose is to prevent debris, dust, rain, and rodents from entering the motor.

What is FLP enclosure?

An enclosure for electrical apparatus that will withstand, without injury, any explosion of the prescribed flammable gas that may occur within it under practical conditions of operation within the rating of the apparatus (and recognized overloads, if any, associated therewith), and will prevent the transmission of …

What is totally enclosed non ventilated motor?

TENV (totally enclosed, nonvented) motors are designed without air openings. Although air does not freely move between the inside and outside of the motor, construction is not air- or liquid-tight. WDN (washdown) enclosures are great for applications in environments where frequent cleaning or sanitizing is necessary.

What is the most common type of enclosure used in residential wiring?


Despite their limited protection, NEMA 1 enclosures are commonly used in a variety of industries to house indoor electrical equipment, such as variable-frequency drives installed in standard indoor locations.

What is IC416 cooling?

IC416 – TEFV – Totally Enclosed Force Ventilated. (ventilated with independent fan) IC418 – TEAO – Totally Enclosed Air Over. (no fan-motor in air stream) IC71W – Jacket Water Cooled.