Answer / sieai

Power quality can be defined as the degree of any deviation
from the nominal values of the abovementioned
characteristics. It can be also defined as the degree to
which both the utilisation and delivery of electric power
affects the performance of electrical equipment. Draft IEC
61000-4-30 [9] defines power quality as “The characteristics
of the electricity at a given point on an electrical system,
evaluated against a set of reference technical parameters”
(with a Note saying that “these parameters might, in some
cases, relate to the compatibility between electricity
supplied on a network and the loads connected to that network”).

why single core HT cable need only one side earthing?

2 Answers  

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What is auto changeover and how it works plz write details.

3 Answers  

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hi every body i am master student in control engineering and my project is slip control in trains i assumed a Dc motore as traction motor but i don't have characteristics of this kind of motor that is used in train. i want from every body if he or she has the characteristics or information about Dc motor that is used in train give me those information or technical characteristics .

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why use generator Earthing/Graunding.

4 Answers  

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Can Induction motor run at over rated speed? ( 15oo rpm is rated speed for 50HZ. is it possible to ride 3000 RPM with same motor with the help of VVVFD for continues ride of 100HZ)

3 Answers   Equate,

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if voltage in transmission line more than current will be more or less,if less what about the Ohm's law

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What is basic impulse insulation level? And how it is calculated for sub- station?

2 Answers  

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trasnfarmaer core make

0 Answers   MPSEB,

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what is a difference b/w earthing & neutral?

5 Answers   ABB, KEC, Sterlite,

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what is the value of the earth resistance in mositure place

3 Answers   HCL,

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Could anyone clarify my wondering. What is the difference between knee point voltage and saturation voltage of the CT. Is their any formula to calculate these values?

2 Answers  

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is it necessary to earth the rmu before cutting off the transformer winding?if yes why?

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