What does Tefc mean on a motor?
Totally Enclosed, Fan-Cooled
Totally Enclosed, Fan-Cooled (TEFC) Motors have an external fan which circulates outside air to the motor. 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.
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.
Are all Tefc motors explosion proof?
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.
What does Teaac mean?
TEAAC (Totally Enclosed Air to Air Cooled) This enclosure type has an external fan which blows air through heat exchanger tubes in the motor frame. The air inside the motor re-circulates and is cooled by heat transfer through the heat exchanger tubes.
What class is a Tefc motor?
Class I, Division 2 Motors TEFC (Totally Enclosed, Fan Cooled) motors and ODP (Open Drip -proof) motors can be used in Division 2 locations provided they do not have ignition sources such as arc-producing brushes or switching mechanisms.
Can Tefc motors be used in hazardous locations?
It isn’t unusual though, in a petrochemical plant, to have areas where the T-code is T3A-T3C. In these cases, normal TEFC motors may run too hot and cannot be used. The surface temperature of any motor space heaters installed for the prevention of condensation must also be considered in hazardous locations [See Sec.
Does Class 1 Div 1 require 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.
What does TEAO mean on a motor?
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.