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Unread 26-04-2014, 19:11
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asid61 asid61 is offline
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I might be missing something with a 6 cim drive...

So I was thinking about main breaker trips with 6 cim drive trains, and I was thinking about how to avoid that.
But because torque is directly proportional to current, and the motors are all cims, for a given current (say, 120a) wouldn't the toruqe output be the same regardless of the number of cims?

Basically, if the amount of current was limited per cim, through the 40a breakers only, then 6 cim drive would have more max power. But if the power of the system is limited to 120a total, then how is it advantageous to use 6 cims instead of 4?

Right now I think it's because the breakers need a few seconds to trip and efficiency gains, but that seems like a small gain to me for the extra space and weight.
 


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