Answer / dayasagar

for star delta starter the thump rule is cable sizing to be 2 X motor KW ie 160 kw motor require 160 sq mm since 160 sq mm is standard size it is better to go for 185 sq mm this rule applies for all star delta motors. here you can go for higher size
for DOL or VFD driven motors 2 time the KW ie 320 sq mm is required since 320 sqmm is not standard size it is better to go for 300 sq mm here you can go at lower size

what is the function of RVT

4 Answers   RMSI,

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I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?

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what is the long transmission lines

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sir i had plane to do some project with the base of hopkinson test in AC supply its possible

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what is recommended breakdown voltage of transformer oil?

5 Answers  

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what is the use of spst switch in performing experiment on self excited dc motor?

2 Answers  

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how to select a cap,when a fan is required 2.5 micro ferad cap,then how we know about 1 hp motor?

1 Answers  

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in dc transmission the frequency pi is zero, then how it will transmit communication signal?

1 Answers  

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how calculated Transformer losses.

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Why reactive power is needed in a power system? How is it being absorbed or delivered by alternators? For reactive power control we are changing excitation but reactive power absorbing or delivering related to stator. How these two are interlinked? i want a detailed explanation with necessary expressions and figures?

0 Answers   Power Plant,

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What consists of 2 or more thermocouples to be connented series?

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what is difference between isolation and ultra isolation transformer?, what is the method of testing ?

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