5 Types of Motor Enclosures

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When choosing a motor, you may be wondering what all the acronyms in the description mean. TENV? WDN? Here's a list of the enclosure types and what each indicates in terms of use:

Single-Phase TEFC Rigid-Base Motor

Single-Phase TEFC Rigid-Base Motor

  1. Open Drip-Proof (ODP) Motorsare equipped with open enclosures. These motors are suitable for indoor use and clean atmospheres. Ventilator openings are designed to prevent liquids and solids from entering the machine from an angle of 0 to 15°.
  2. Totally Enclosed, Fan-Cooled (TEFC) Motors have an external fan which circulates outside air to the motor.
  3. Totally Enclosed, Nonvented (TENV) Motors do not have air openings. While air does not freely move between the inside and outside, the motor's construction is not air- or liquid-tight.
  4. Washdown (WDN) Enclosures work well in environments in which regular cleaning or sanitizing is necessary.
  5. Explosion-Proof (XPRF) Motors are completely enclosed to withstand an internal explosion of gas or vapor—the motor frame will not rupture or burst. Use these motors for safe operation in hazardous environments.

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