Why are the HV motors are connected in star connection?
Answer Posted / jayakumar
In Star connected HT Motors , stator applied phase voltage
reduced by root 3 times so Current would be reduced
equivalent to this as well as stator Line current is equal
to phase current.
In Delta connected winding full line voltage(equal to phase
voltage) is applied on each phase so stator current would
be higher (root 3 times more than star connections).
The size of cable HT considerably reduced while on star with
delta connected motors.For star connection, the star point
easily brought out outside and make the connection by 3 nos.
HT bushings only for Delta 6 nos terminal bushings to be used.
Is This Answer Correct ? | 4 Yes | 2 No |
Post New Answer View All Answers
Define Electrical Insulation and examples of Solid,Liquid and Gaseous insulating materials?
What’s electric traction?
why can the rotor of 3 phase slip ring induction motor not be a 2 phase rotor?
What is acsr cable and where we use it?
What is the meaning of 40X8X2 busbar dimensions for carring load of 400 Amps
What are the material used for inductance coil?
Damping resistor provided in open delta (tartiary) winding of a measuring PT at the incoming of a MV inverter drive panel is getting heated up. Can any body explain the reasons and suggest the remedy?
How each of the following losses occur in d.c machines (i) copper (2)core (3) windage (4)friction please help me
What is process of anneling transformer core
HOW TO CHECK THE VECTOR GROUP OF A TRANSFORMER YD11?
how much value of resistance should connect to 15 kw, 6 pole 3 phase slip ring induction motor having RV-240, RA-42.
one split ac how can told of this ac which Tr tell me us
11kV capacitor bank of rating 2.4KVAR, is charged with protective relays of only over current & Earth fault &.......without Over Voltage, Under Voltage & Neutral Displacement Relay. Is it advisable??
can anybody send me syllabus of rrb section engg (electrical). and also send previous question pepar...
What is the difference between Delta & Wye windings?