Answer / an engineer

the formula is k= n/Et

Answer / r.k.shah

Meter Constant for an Energy meter is the amount of KWH
used in its low voltage circuit for each revolution of the
induction disc. Here the explanations are given for a
typical industrial 3-Ph Energy Meter which is fed by a
suitable CT & PT.

To calculate the MC: If it is given that No. of Revolutions
per KWh then, MC is inverse of this no. For example, Let's
say for a certain Energy meter, No. of Rev./KWH is given as
4000, then MC = 1/4000.

If the No. of Rev. per KWH is given as a very small No.
like 0.06 or 0.16 etc. then it refers to KWH value in
primary circuit. That is, 1 KWH value passes in HV circuit
for given amount of Rev. To calculate MC in such cases,
invert such No. & then devide by CT & PT ratio.

Answer / chella vihari

k=no of revolutions per hour/total capacity of the meter

Answer / sai kiran

I want to know all about the circuit diagram for energy
meter. So please send to my mail.

the distance from my office to d.g is aprox 400mtrs and voltage drops ibn my office near about 40 volt what should i do p[ls suggest.

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can the measured percentage error during calibration of single phase energy meter be negative?

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transformer losses

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WHAT IS ND RELAY AND HOW DOES IT WORK?

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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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Why not using Air circuit breaker at High tension side?

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2 t/f operating in parallel will share the load according 2 their- a)leakage reactance,b)pu impedence,c)efficiency,d) rating.

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