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Locked Rotor Current of 4000HP Synch. Motor

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#1 joj101


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Posted 24 March 2006 - 11:18 AM


I have a customer with a very very old 4000HP motor. All pertinent informations of the said motors are gone except for the nameplate data with out the LRA. The autotransfomer starter manufacturer is requiring the LRA. Will it be safe to assume a value of 4 times the Full load current? The motor is rated 4.16KV with service factor of 1.15.


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