What is the difference in the number of turns of windings between explosion-proof motors and ordinary motors?
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What is the difference in the number of turns of windings between explosion-proof motors and ordinary motors?
The number of turns should make little difference; the key is the explosion-proof design.
This post was last edited by zhaohh3211 on 2010-7-5 at 14:55. There is no difference in the number of turns; the difference lies in the explosion-proof features compared to ordinary motors.
This post was last edited by zhaohh3211 on 2010-7-5 14:56. The electrical performance requirements are the same; explosion-proof motors simply feature an explosion-proof design.
This post was last edited by zhaohh3211 on 2010-7-5 at 14:57. Explosion-proof motors require a higher level of sealing compared to ordinary motors; as a result, their heat dissipation conditions are poorer. To prevent these motors from reaching excessively high temperatures and to reduce iron loss, the magnetic flux density in explosion-proof motors is generally set at a lower level. As a consequence, the number of turns in their windings is higher than that in ordinary motors – some coils have 2 to 4 more turns.
This post was last edited by zhaohh3211 on 2010-7-28 07:45. Explosion protection refers to an explosion-proof design of the enclosure, and it has nothing to do with the windings.
Reply to 6# denghl: I work at ABB’s high-voltage motor factory; you’re an expert in your field.