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posted by  meetje on 7/10/2008 10:59:49 AM  |  status: Live  

Switch Gear and protection

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Question Details:
Discuss differential protection, modified  differential protection and percentage differential protection of alternators.Draw the suitable connection diagram for clear understanding.

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posted by sapporo on 7/10/2008 11:01:59 AM  |  status: Live
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Differential protection is when you have ct on the star point and the output side of the windings, if you get an imbalance it means you have an internal fault, the protection method is also used on transformers.
 
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