if a 3phase motor runnig in star delta starter with full
load of its,and its rated 15 amps.now we conneted over load
thermal relay at its main contactor,here what will be our
amps sittings?
Answers were Sorted based on User's Feedback
Answer / pillay
If star delta connection it will have 6 wires . so the amp setting of the TOR WILL BE FULLLOAD AMPS /ROOT 3
15/1.732 =8.6 AMPS
Is This Answer Correct ? | 6 Yes | 2 No |
Answer / k.prakashchandra
The thermal relay is coeected to mains and not after the
starter.The setting may be at 110 to 120 % 0f full
load.i.e.16 to 18 A
Is This Answer Correct ? | 1 Yes | 4 No |
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