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 does ODP Motor mean?
Open Drip Proof (ODP) motors are usually much cheaper than TEFC motors, but are highly susceptible to whatever contaminants are present in the ambient environment. Anything and everything in the air surrounding the motor is pulled through and around the interior of the motor.
What are TEAO & ODP enclosures?
The more common of these enclosure types are Open machines: Drip-Proof (ODP), and Weather Protected (WPI/WPII); Totally Enclosed machines: Fan Cooled (TEFC), Pipe-Ventilated (TEPV), Air Over (TEAO), Non-Ventilated (TENV), Air to Air (TEAAC), Water to Air (TEWAC), and Explosion-proof (XP); and those with encapsulated or …
Is a totally enclosed motor explosion proof?
Totally Enclosed, Nonvented (TENV) Motors do not have air openings. … 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.
Which type of motor enclosure is best?
When considering which motor enclosure is best, look at the type of cooling the motor requires and most importantly the environment that the motor will be operating in. Open Drip Proof – ODP motors are almost always the least expensive of all motors which often times makes them the preference of equipment OEM’s.
What is the difference between an ODP and a Tefc motor?
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.
What are 4 common types of 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)
What does TEAO stand for in motors?
Totally Enclosed Air Over/Airtight (TEAO)
TEAO motors would be used in areas with direct drive where the motor is in the airstream.
What is the difference between TENV and Tefc?
Totally Enclosed Non-Ventilated (TENV) motors are very similar to TEFC motors, except that they have no fan cooling system, relying on passive cooling with the surrounding air to keep the motor temperature under control. They have much the same strengths and weaknesses as TEFC enclosures.
Which motor is used for elevator?
Conventionally, there are, in general, three types of motors used in elevator systems: AC, DC and a hybrid between the two. The AC-2 motor is a primitive motor drive popular at least half a century ago for low-speed elevators. It is usually coupled with a worm gear to reduce speed and increase driving torque.
Are motors rated NEMA?
NEMA Ratings for Motors. Is a motor, just a motor? No, not really, but if you want consistency, and the right motor for the right job, you better get up to date with the associated standards. NEMA offers three individual standards for motors: NEMA Insulation Classes, NEMA Frame Assignments, and NEMA Motor Enclosures.
Is a Class 1 Div 2 motor explosion proof?
While Division 1 motors in Class I locations must be explosion-proof, Class II, Division 1 motors must be dust- ignition-proof. … One important distinction is that the enclosure of a dust-ignition- proof motor is designed to exclude hazardous materials.
How can you tell if a motor is flameproof?
- Service/class temperatures.
- Reference pressure – waveform smoothing at 5kHz.
- Flame path width and gaps.
- Ignition tests with variety of explosive gas mixtures, five tests per mixture.
- Flame transmission.
- Enclosure strength.
- Enclosure must contain explosions at 1.5 times standard explosive pressure.
What is DP enclosure?
Drip-Proof/Open Drip-Proof (DP/ODP)—Designed for use on horizontal motors, such as fire pump motors, these prevent drops of liquid or solid particles from entering ventilating openings in the enclosure at any angle from 0 to 15 degrees downward from the vertical.
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 a DP motor?
DP – Drip-Proof
An open motor in which the ventilating openings are so constructed that drops of liquid or solid particles falling on it, at any angle not greater than 15 degrees from the vertical, cannot enter either directly or by striking and running along a horizontal or inwardly inclined surface.