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

HT/LT TRANSFORMER TEST?

0 Answers  

I am new guy as an electrical engr. in a 100MW HFO based power project. I am in operations division. I have noticed from last few days, my supervisor sends the last 24 hours energy generation calculation to my plant manager. I have noticed, he calculated last 24 hour's generated energy differences in KWH then he multiplied it with a multiplying factor 960. for example: total difference =2.685 KWH*960= 2577.6 MWH. but he does not not know what is multiplying factor 960?? can anybody explain it??

1 Answers   Orion,

transformer cooling fan kharab ho jaye to 1-off kar dena chahiye 2-load kum kar dena chahiye 3-koi frrk nhi padta 4-sub galat hai. choose right option

2 Answers   PGVCL Paschim Gujarat Vij Company Limited,

In all electric motors, fans are provided to dissipate heat. How it dissipate the heat? By absorbing atmospheric air or by exhausting the heated air generated while running?

2 Answers   Ford,

what is the difference between 4pole & 6pole DC Motors & give advantage ?

0 Answers  

Can we use the 60 HZ transformer/rectifier/Motors/Coils in 50 HZ? if not so, why?

3 Answers  

How is the resonant peak, resonant frequency, and bandwidth determined from nichols chart?

0 Answers  

what is the difference between transformer,converter and transducer

0 Answers  

which type of material is used to transformer laminated core?

6 Answers  

How to calculate total harmonic distortion level(THD) in VFD? and how can we reduce harmonics?

0 Answers   Apollo,

What the main causes of transient interruptions on Over-Head Distribution Lines?

0 Answers   Orion Laboratories,

which pole motor is best ?4 pole motor or 6 pole motor,why?

2 Answers