what is the difference between line & phase current in star delta connection motor?
Answers were Sorted based on User's Feedback
Answer / e. segovia
In 3ph star connections we can prove by means of drawings
or maths methods that Line current = SQRT(3)*Phase
current, and in delta connections Line current = Phase
current, that is why we use star-delta connection for
heavy motor startings. This means we can lower the current
at starting and then after having overcome the system
inertia we swap to delta connection. worth mentioning that:
In delta, Line voltage = Phase voltage
In star, Line voltage = SQRT(3)*Phase voltage.
Is This Answer Correct ? | 4 Yes | 1 No |
Answer / ald
Star connection--- Line current = phase current
Line voltage = phase voltage x 1.732
Delta connection --- Line voltage = Phase voltage
Line current = phase current x 1.732
Is This Answer Correct ? | 2 Yes | 0 No |
what type of load we can give to motor shaft?
Seamless tubes are made by?
why AC signals are represented by sinusoidal waveform?WHY other waveforms not used for representation
what will happen if dc motor given ac supply
Why should not we run the IM in low voltage, if runs means what will happen?(for example instead of 400V we give 250V supply)
1. Why a DC motor starter is called 3 point starter
21 Answers ABB, CG, College School Exams Tests, Crompton Greaves, Infosys, Siva,
Why should we use jelly filled armoured cables in underground Communication system? What is the use of the Jelly? If we go for unarmoured, then what happens?
what is the purpose of high speed earth switch in gas insulated substat
What will happen if " not connecting the neutral point to ground of diesel generator output (380 V)", also if someone touched one phase without isolation from ground during the A/M condition what will happen to him?
what is voltage
In control room of our one plant there is a continuously the incoming power goes to PC is vary,means in stabilizer it continuously indicate from high input to low and low input to high. what is the reason and its solution.
why we use circuit breakers for switching instead of normal switching device?