2007-01-29 20:40:53 · 4 answers · asked by AUGUSTUS A 1 in Science & Mathematics ➔ Engineering
The starting current of an induction motor is 10 to 11 times its rated current. This actually applies to any electric motor to a greater or lesser degree.
2007-01-29 21:27:28 · answer #1 · answered by Helmut 7 · 0⤊ 0⤋
The starting current of any motor will be much higher than the rated current as it has to overcome the starting torque.
2007-01-29 21:34:13 · answer #2 · answered by jayaraman n--chemm 4 · 0⤊ 0⤋
Everybody is right and this is why the circuit breakers on motor circuits are the thermal breaker type and not the magnetic breaker type. Magnetic breakers will trip quickly if their trip value is exceeded and will not forgive the starting surge of the motors. Thermal breakers will put up with the surge and will still protect the circuits at their ratings.
2007-02-01 20:13:42 · answer #3 · answered by ZORCH 6 · 0⤊ 0⤋
Should be greater before it speeds up after starting, and before the reverse E.M.F (due to reverse generator effect) builds up.
2007-01-29 20:53:17 · answer #4 · answered by Sam 7 · 0⤊ 0⤋