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gokulkrish2
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Joined: 2-July 08
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Last Seen: 2nd July 2008 - 10:43 PM
Local Time: Sep 3 2010, 11:01 AM
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2 Jul 2008
Hello All,
Im a new member to this forum. I am a Graduate student and im doing an internship in a Mining Company. I am working on a conveyor project whose problem is that it wont start when it is shut down loaded. It is a horizontal conveyor and when i analyzed the data about Load Current at different instances, the maximum current for a maximum load was only 180 amps whereas the motor is rated at 270 amps. So i figured out it is a prob with the starting current or the starting torque. I know that the conveyor has 250HP motor which is connected to the pulley through a fluid coupling. The service factor of the motor is 1.15 and the full load current of the motor is 270 Amps I need to know whether we can take off the soft start and start the motor across the line so as to get the full torque? Im also concerned about the protection of the transformer which feed the motor. (inrush??) The transformer is connected to the mains through a 50amp fuse on the primary side. Can someone help me on this issue. Thanks in advance. regards, gokul |
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