Answer / dhara. s

Marshelling box is generally erected at switch yard near the trafo & RTCC is erected at control room. MB is to marshell control cables from control & relay panel also from RTCC to OLTC & other supervision & cooling control system connected to transformer tank. RTCC panel is to operate tap & to supervise transformer heating & cooling conditions.

if there is fire alarm,what is ur activity?

4 Answers  

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how is efficincy of the transformer is predermined

3 Answers  

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what deffrence between KW $ KVA ?

7 Answers  

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hi,every one, i have to write the search paper on "performance policy optimization" of NGN (next generation networks). i need the material on this topic. can any body help me. please tell me any useful site where the good material is available and name of any reference book. it should be a great help for me.

0 Answers  

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What is lifting power for 1 wb/m2 and 1 A magnet?

0 Answers   Techno Labs,

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Why need 3phase machine double earthing?

0 Answers  

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anybody can give the voltage value for 1M ohm

2 Answers  

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Dear all, I just want to ask an expert on this forum for some insights. For the magnetic balance test, when applied voltage on a Delta-Star transformer e.g. Dyn11, the following relationships apply for HV side: 1.  H1-H2 = H2-H3 H3-H1 2.  H2-H3 = H3-H1 H1-H2 3.  H3-H1 = H1-H2 H2-H3 For the LV side also: 4.  X1-X0 = X2-X0 X3-X0 5.  X2-X0 = X3-X0 X1-X0 6.  X3-X0 = X1-X0 X2-X0 Is there a similar pattern for Y-d, Y-Y, D-d? And how about Y-z, D-z, Z-y transformers? I've tested a YNzn5 transformer and for LV side I don't see the pattern. In this particular case I got for LV side the following (see values below): H1-H0  H2-H0  H3-H0    X0-X1  X0-X2  X0-X3 128.0  119.9  7.2      29.2   13.3   15.8 70.7   128.4  59.2     23.4   22.0   3.6 7.2    120.1  128.1    13.4   29.3   15.8 What is the relationship here for LV? For row 1 I see the relationship, for row 3 I also see but it's shifted, but for row 2 I don't see such relationship. Any suggestions, answers, someone?

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How to increase the specific gravity of DG batteries?

12 Answers   SCS,

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why we r using 4-20ma instead of 0-20ma in instrumentation

2 Answers   EID Parry,

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What is the type of feedback used in an op- amp schmitt trigger?

0 Answers  

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Why is the earth pin in a 3-pin plug the longest and the thickest?

10 Answers   IBM,

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