ACB & VCB how do work and saftes and how can maintenance in this and parts name show with picture

0 Answers   Mukand,

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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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a wire in which bulb is connected there is two terminal when one terminal is connected to phase than why the value of current shock in nutral terminal is max. or large??

4 Answers  

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kva/kvr

2 Answers  

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sir, iam ramya.... from the discipline of E.E.E appearing for jindal exam .sir, could you please send me the modal papers of recent jindal steel exam.

1 Answers  

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for distribution line ratio of x/r 1.<0.1 2.>10 3.>1 4.<0.01

3 Answers   HAL, HPPSC,

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Why we use 2core cable for Dc motor.Can I use 3core?

5 Answers   JK Paper, Maharaja Whiteline,

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what is different between grounding and earthings?

4 Answers  

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What is d diff. btw MCB & MCCB???

1 Answers   Emerson,

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want happens when a dc is given to a commutator

2 Answers  

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what is the function of 1 phase preventer?

3 Answers   ABB, Electrical,

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what is difference b/w bus duct & bus bar.

2 Answers  

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