why -48 volts dc used in telecommucation

0 Answers  

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Whats the minimum value for I.R. that can be allowed for HT & LT alternators for operation?

1 Answers  

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What is the effect of pi controller on the system performance?

0 Answers  

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What do you mean by S.F.U. unit? application of it.

16 Answers   Indo Asian,

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we have 400kv/6.6kv transformer ,it has total 9 taps on HV side with normal tap on tap no 5.when we took the ratio test we observed that ratio was decreasing from tap 1 to tap 5 and was found increasing from tap 5 to tap 9.What is the reason?if anyone have related document then please send me on the email id ankushbahale@gmail.com......plz plz

1 Answers  

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234 MVA Generator 3 phase Short circuit current Values required? Gen set Rating-234 MVA, Gen Voltage-18kv, PF;0.8, Xdv:23.5 %, Transformer Rating-18/380KV, 680MVA,Yndd1 two winding, Step up TR, ZT:35.50 %,X/R 4.33 Gen CB Position, CB open ,Disconnected open, Generator Running Voltage 18 Kv, Bi mistakes generator side earth switch Closed during that time short circuit current level in 3 Phase required, and how to test on site 234MVA Generator Short circuit current,

0 Answers   Jubail O&M,

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What is the purpose of RECTIFIER ASSEMBLY in AC power generators?

2 Answers  

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What is substation?

5 Answers   KSEB, Neolite,

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what is through fault?

0 Answers   KSEB,

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why abcd parameters are called as transmission parameter?

1 Answers   Accenture,

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What is meant by derating factor?

0 Answers  

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What is the function of a capacitor in a ceiling fan?

2 Answers  

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