what is the difference between normal motor and flame proof
motor??
Answer Posted / varun
The main difference between normal motor and flameproof motor is the construction of the frame of the motor. Electrically the 2 motors are identical (depending on the manufacturer and money)
The flameproof motor's frame is more robust with larger spigots and end caps on the bearing housing. This more robust frame is needed if a gas explosion (not electrical explosion) occurs inside the frame of the motor, the explosion needs to be contained inside the frame and the flame need to be cooled down by the time it reaches the outside.The larger spigots on the frame is acting same as a cooler for the flames (this is called the flame path).
The sizes of the spigots are determined by the volumetric capacity of the frame, in other words the larger the frame size the larger the spigots. This effectively is needed because the more gas that will be able to gather in the frame of the motor, the bigger the explosion will be, the bigger the spigots needs to be to create a longer flame-path to cool the flame down.
Is This Answer Correct ? | 22 Yes | 4 No |
Post New Answer View All Answers
What are the material used for inductance coil?
What is the Temperature to be set in Thermostat provided in Marshalling box of the Transformer / Motor.
what is the mechanism of operation of brushless dc motor why is it more wexpensive then ordinary permanent magnet motors
What is cut-off rate?
What cmos is and its benefits?
why do we lay up the core of a cable?
What is meant by Load Encroachment in OHL Feeder Protection?
why should small green grass ans small plant should not be there inside the transformer Yard in the factories
For small size, high frequency coils, the most common core material is- a. )Air b. )Ferrite c.) Powdered ion d.) Steel
Define availability (operational)?
Where servomechanism is used?
hi every body i am master student in control engineering and my project is slip control in trains i assumed a Dc motore as traction motor but i don't have characteristics of this kind of motor that is used in train. i want from every body if he or she has the characteristics or information about Dc motor that is used in train give me those information or technical characteristics .
I have a 380 KVA DG set. How can i find out 1. My Fuel Consumption per hr ? 2. Electricity produced in 1 Hr. ? 3. If load varies then how does it affect fuel consumption & electricity produced ? Please HELP !!! Really need an answer.
why does connected a indutor with mnsformeretering core of current transformer ?
I have a reading off 1.5ohms at my mem my main c/b is rated at 40/6 amps in a domestic house and i was told to change it to a b curve c/b is this ok