Answer / pallamraju

in star line current =phase current
line voltage =1.732* Ph voltage.
if we connected in star there is no change of current parameter.insulation level can be minimized.hence size of the motor will be reduced.if in delta it will be more.that's why all HT motors ,syns motors & generators in star connected system.

Answer / gunasekaran

1.we can use less no of turns for same voltage level
2. we can put less insulation.

Answer / manesh.k

I think we need a clarification to answer 1.Actually the
starting current will be 2-3 times the Full Load current,not
load current.

Answer / giri

Starting current is reduced 1/3 times during star connection
starting since voltage also reduced by the same proportion
.U can remind in star-delta connection starter.

Answer / n. gopal krishna (hf)

In star line voltage =1.732*phase voltage &In delta
Vl=Vp.so we can not provide much insulation in delta
connection. we cannot use also differtional relay in delta.

Answer / s c budhiraja

To reduce starting current as well as avoiding star -Delta
starter, the motor stator is connected in Star.

Answer / taufic

HT motors are connected with star due to the motor starting
current is 6 times to load current

if field breaker of generator is closed prior to its rated speed on a power generating unit. what will be the effect on generator, unit transformer and starting transformer.

0 Answers   Power Plant,

What is process of anneling transformer core

0 Answers  

what is the reason for harmonics introduced in the line

2 Answers  

critical losses of transformer

3 Answers   EEEC,

what is the thumb rule to know current carrying capacity of copper conductors of different size.

1 Answers  

what is cogging and crawling

2 Answers  

what is meant by tranformer impedance?

0 Answers   Synergy,

What is Auto Mains Failure Panel & Auto Synchronizing Panel

0 Answers  

Transfer function is == ? a. Mathematical model b. System with no physical structure c. Can be calculated through differential equations

1 Answers   CCP,

electrical

0 Answers   BSES, Minda,

what is suitable cable for 25 HP motor ? start with VFD ac supply 50 hz

3 Answers   Mac,

What is the purpose of taking Capacitance and Tan Delta Test in Transformer bushing?

1 Answers