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”).

Slipring moter find external resistance

1 Answers  

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what types of fault occurred in transmission line ? which protection function senses the fault?

1 Answers  

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I BOUGHT A HAVELLS ACCL WITH GENERATOR STOP FASCILITY(i.e- BASICALLY IT IS A AUTO CHANGE OVER SWITCH) FOR MY HONDA EXK 2000S HOME GENERATOR (WHICH START IN PETROL & RUN IN KEROSENE). ACCL HAS 8 POINT. 2 FOR MAINS(PH & NUE), 2 FOR LOAD, 2 FOR GEN AND 2 FOR IGNITION POINT(X1 & X2). THE IGNITION POINT IS SPECIALLY FOR AUTO ENGINE STOP WHEN MAINS POWER RESTORE. I CONNECT THIS X1 & X2 POINT TO THE GENERATOR STATER MOTOR & EARTHING POINT. BUT WHEN MAINS FAILS THE GENERATOR COULD NOT START, BUT WHEN DISCONNECT THOSE X1 OR X2 POINT, THEN THE GENERATOR START. BUT WHEN MAINS ON THEN THE GENERATOR SHOULD START, AND WHEN I OFF THE MAINS THE GENERATOR AUTOMATICALLY STOP. PLESE HELP ME HOW I STOP THE GENERATOR AUTOMATICALLY WHEN THE MAINS RESTORE.

2 Answers   Honda,

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Why field rheostat is kept in minimum position?

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What are the advantages of hydropower?

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How to calculate no of EARTH PIT? Describe the formula as per IS standard?

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HOW DOES ONE SELECT A TRANSFORMER PHASOR GROUP IE, WHETHER A STAR-DELTA TR OR A STAR-STAR OR A DELTA-DELTA, ETC. TRANSFORMER IS MORE SUITABLE FOR A PARTICULAR KIND OF LOAD OR WORKING CONDITION???

3 Answers   KPTCL,

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i have attended the interview on 4th June,08 at Kolkata in IOCL, can anybody tell me what is its result

0 Answers   IOCL,

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What will happen if the voltage in my house drops from 220V to any lower voltage?

0 Answers  

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can we start mulitple 3 phase induction motors with common starter?

1 Answers  

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can three phase induction motor rotate with only 2 phases connected

22 Answers   Delta, Mannar Company, Suntron,

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Why in KVA diesel engine? Why not KW

3 Answers  

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