What are the two types of motor enclosures?

Types Of Motor Enclosures

• 1) Open Drip Proof (ODP)
• 2) Totally Enclosed Non-Ventilated (TENV)
• 3) Totally Enclosed Fan Cooled (TEFC)
• 4) Explosion Proof (XP)

What are the different types of motor enclosures?

Ten Common Types of Motor Enclosures

• Open Drip Proof (ODP)
• Totally Enclosed Fan Cooled (TEFC)
• Totally Enclosed Air Over (TEAO)
• Totally Enclosed Non-Ventilated (TENV)
• Totally Enclosed Force Ventilated (TEFV)/ Totally Enclosed Blower Cooled (TEBC)
• Weather Protective 1 (WP1)
• Weather Protective 2 (WP2)

What is enclosure of motor?

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.

What is the difference between ODP and Tefc Motors?

An open drip proof or ODP motor is a type of motor that typically runs cooler and does not overheat. 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.

Why regenerative braking is not possible in DC motor?

Why? In case of DC Series motor, as the speed of Motor increases, the armature current and hence the field flux will decrease and therefore Back emf E can never be greater than the supply voltage V. Therefore, Regenerative Braking is not possible in DC Series Motor.

What is ODP motor enclosure?

The ODP (open drip proof) is one of the most common types of enclosures. The enclosure is open and vented at the back end of the motor and allows air to circulate in and around the motor windings carrying off heat.

Is a Tefc motor waterproof?

The enclosure is “Totally Enclosed”. This means that the motor is dust tight, and has a moderate water seal as well. TEFC motors are not secure against high pressure water nor submersible. They are also not explosion proof without additional modifications.

Which of the following motor enclosure is safest?

Which of the following types of motor enclosure is safest?

• A. Totally enclosed.
• Totally enclosed fan cooled.
• Open type.
• Semi closed.

Do ODP motors have fans?

Although the ODP motor doesn’t require external cooling (our idler motors have an internal fan) the open concept can allow airborne contaminants and dust to enter the chamber.

What do you need to know about motor enclosures?

These motors should only be used in an environment free from airborne contaminants. For these types of enclosures, you will want a cast iron frame as opposed to a rolled steel frame, to help cool the motor and keep the frame from twisting. Air comes through an external fan at the end bell and blows over the motor, keeping the inside clean.

How does a cast iron motor enclosure work?

For these types of enclosures, you will want a cast iron frame as opposed to a rolled steel frame, to help cool the motor and keep the frame from twisting. Air comes through an external fan at the end bell and blows over the motor, keeping the inside clean. The air in the motor recirculates and is cooled by heat transfer through the frame.

Why do you need a tefv motor enclosure?

Designed for motors that operate over an extended speed range. The TEFV enclosure utilizes constant speed fan to cool the motor. This way the motor will get enough airflow even when the speed is really low. Explosion-proof motors are intended for use in hazardous locations, in the presence of explosive liquids, gasses, dusts and so on.

How does an airtight motor enclosure work?

This is not an airtight motor enclosure, so it needs to be used in a clean air environment. These motors usually run at slower speeds with high torque. They utilize a constant speed fan to cool the motor. This way the motor gets enough air flow even when speed is low.