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What is the difference between phase current & line
current, how both can be measured in star and delta system
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Answer Posted / prasad
Star or Delta are types of winding connections for 3 phase
systems. The line current is the current passing thru
conductor to these windings. The ammeter is generally used
to measure current thru those conductors & not winding.
This current is known as line current. While the current
passing thru each phase of winding is known as phase
current.
In Star winding entire line current passes thru
individual phase i.e. I(ph)=I(L)
In Delta winding however line current gets divided in two
windings. Here I(ph)=I(L)/1.732. Here 1.732 is square root
of 3.
| Is This Answer Correct ? | 214 Yes | 35 No |
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