is there any concept of armature reaction in Induction
motor?
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Answer Posted / manoj
to produce armature rection,there is must neccessary two
opposite direction field and one uni direction field,so that
only the the air gap flux will distorts.in induction motors
the field produced in rotors is opposite with armature flux
in one direction only that means only on top of the
conductors produce torq .
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I just purchased a 4 position cam switch to be used to operate a 3-speed blower motor. The motor is a 10 amp motor and has 3 wires that are used to control speed. The cam switch was rated at 660V 20 amps but when I received it, I noticed that it has AC-15 operational current rating (Ie) of 4/5 amps. If I am reading the label correctly. the 4/5 amps is related to 440v/220V (Ue). Other ratings are AC-3: 5.5A, AC2: 7.5A and AC-4: 1.5A. My questions are 1) Is it safe to use this switch with the motor I have 2) what is the difference between the 20 amp Ith ratting and the Ie operational ratings?
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