why we use star connection in HT motor? and delta connection
in LT motor
Answers were Sorted based on User's Feedback
Answer / vinoth
In HT motors it will reduce the starting current up to 60 percent thats why we prefer star to delta conection..........but in LT motors we use Direct online starter/.......it doesnt reduce the starting current
Is This Answer Correct ? | 4 Yes | 1 No |
Answer / madhu
The starting current for motors is 6 to 7 times full load current. So start-up power will be large if HT motors are delta connected. It may cause instability (voltage dip) in case small Power system. In starred HT motor starting current will be less compared to delta connected motor. So starting power is reduced. Starting torque will also be reduced. (It will not be a problem as motors are of high capacity.)
Is This Answer Correct ? | 0 Yes | 0 No |
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