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how can you calculate the value of external resistance
inserted in a slipring industion motor? (eg. 110 kw / 990
rpm/50Hz/stator v-415/stator Amp-195/Rotor V-440/Rotor amps-
151.)
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Answer Posted / prashant
All hoist and travel drives in EOT cranes, or any equipment for that matter, that use Slip Ring Induction Motors and need speed variation use these resistance boxes. The method of calculating steps in external resistance is absolutely correct as told in 1st answer.
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