What is a Class 1 Div 2 motor?
Class I, Division 2.
This classification usually includes locations where volatile flammable liquids or flammable gases or vapors are used, but which, in the judgment of the authority having jurisdiction, would become hazardous only in case of an accident or of some unusual operating condition.
Does Class 1 Div 2 require explosion proof motor?
While Division 1 motors in Class I locations must be explosion-proof, Class II, Division 1 motors must be dust- ignition-proof.
What is a Class 1 electric motor?
They must be built and labeled as explosion-proof. Class I, Division 1 motors must possess specific characteristics to be classified as explosion-proof. First, the motor must be designed to contain any internal explosions without rupturing completely.
Can a Tefc motor be explosion proof?
TEFC motors are not secure against high pressure water nor submersible. They are also not explosion proof without additional modifications.
How do I know if my electric motor is explosion proof?
Motors that satisfy UL explosion proof certification are clearly identifiable by a UL listing identification plate, affixed to the motor enclosure. The plate defines the class, division and group compliance of the motor.
What rating is explosion proof?
For “Explosion-Proof” protection, it’s recommended to use NEMA 7 rated equipment as it is truly resistant. All other ratings will be suitable for other purposing and hazardous area classifications aside from Ex-resistance.
What is a Class 1 Div 2 enclosure?
So a Class 1 Division 2 Enclosure is used in facilities that deal with flammable gases, vapors, and liquid materials. Additionally, the facility handling, processing, or using the materials in the defined hazardous location contain concentrations insufficient to be ignitable.
What is the difference between Class 1/2 and 3 eBikes?
Class 1: eBikes that are pedal-assist only, with no throttle, and have a maximum assisted speed of 20 mph. Class 2: eBikes that also have a maximum speed of 20 mph, but are throttle-assisted. Class 3: eBikes that are pedal-assist only, with no throttle, and a maximum assisted speed of 28 mph.
What is the difference between TEFC and TENV motors?
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.
What is the difference between TEFC and TEBC?
Totally Enclosed Blower-Cooled (TEBC) motors are similar to TEFC motors, except that instead of a shaft-mounted fan that provides cooling when the motor is operating at high speed, the motor body is cooled by a separate ‘blower’ fan that is mounted on the body.
What type of motor is explosion proof?
Class I, Division 1
These motors meet the strictest explosion proof design standards: A motor enclosure that withstands and contains an internal explosion. Flame exhaust paths that dampen flames and permit hot gases to escape the enclosure.
Can NEMA 4X be used in Class 1 Div 2?
We recommend electrical enclosures meet or exceed a NEMA rating of Type 4 or Type 4X for use in a Class1 Div2 hazardous location when used with appropriate purge systems.
Is NEMA 4X good for Class 1 Div 2?
While many ratings aren’t Explosion-Proof, each category rate contains specified classes and divisions of hazardous zones that define the appropriate gear. Again, the NEMA 4X lighting may not be Explosion-Proof; however, the lighting is suitable for class 1 division 2 hazardous areas.
What class is explosion-proof?
There are three classes of explosion proof lights, known as Class I, Class II, and Class III. These are the broadest sense in which explosion proof lights are distinguished from each other. The classes are then each broken down further into two separate divisions.
What is a Class 4 electric bike?
A comprehensive up-to-date list of all battery Class 4 electric bikes. Under the U.S. electric bike classification system, Class 4 e-bikes are not permitted for road use, as their top speed is greater than 28mph and motor output is greater than 750W.
How fast does a Class 3 eBike go?
28 mph
Class 3: eBikes that are pedal-assist only, with no throttle, and a maximum assisted speed of 28 mph.
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 TENV motors explosion proof?
Totally Enclosed Non-Ventilated (TENV)
These are suitable for uses which are exposed to dirt or dampness, but not very moist or hazardous (explosive) locations.
Is a TENV motor explosion proof?
TENV motors are not considered airtight, therefore you would not use them in wet environments, but you could use them in slightly damp and definitely dirty environments. They are not suitable for hazardous or explosive environments.
Can electric motors explode?
Electric motors generate heat under normal operating conditions and have the potential to generate a spark if a motor coil fails. Excessive motor case temperatures or a spark that is not properly contained can cause an explosion or ignite a fire in environments where specific hazardous materials are present.
What is the difference between NEMA 1 and NEMA 2?
NEMA 2 protection is the same as NEMA 1 in terms of preventing ingress of large solid objects. It adds protection against the ingress of dripping and light splashing water. This does not mean rain, as this is an indoor rating.
What class is NEMA 4X?
Class 1
NEMA 4 & NEMA 4X Enclosures – Class 1, Div 2 Enclosure Protection.
How do I know if my motor is explosion proof?
What’s the difference between a Class 1/2 and 3 ebike?
Can you add a throttle to a Class 1 ebike?
Class 1 e-bikes can have a throttle fitted but these are used mainly as a ‘boost’ because the rider must start pedaling before the throttle will engage the motor, however, you can use the throttle up to 20mph / restricted speed limit.