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When is a motor in star connection or in delta connection?
Star (or wye) connection is where each of the three phases has a fourth conductor, neutral, as its current return. Current flow in this configuration is phase to neutral, which is also grounded back...
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What do you mean by star delta connection?
A star connection is one with 3 hot conductors returning power to a (usually grounded) common return (neutral) conductor. If the three hots are called A, B, and C, and the neutral is called N, then...
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How do you connect star delta connection?
Star and Delta is used mostly in 3 pH networks where 3 phases are 120 degrees apart. consider A1-A2,B1-B2, C1-C2 as three different wdgs or resistors. for star connection connect A2,B2,C2 together...
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Why you use the star delta connection?
Motors pull a lot of starting current, sometimes as much as four times their running current. This can damage components and/or make the motor overheat. Star-delta is a technique that can reduce this...
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Why you make initially star-connection then delta-connection?
This type of motor starting is used to reduce the inrush current to a lower level. Once the motor is operating at the lower level of run current it changes to a delta connection which allows the...