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”).

how many earthing required for ups, what should be the earth voltages

9 Answers   Juniper Networks,

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1.Whats the use of GNAC(Generator Neutral Accessory Compartment) 2. why generator or any other system require Neutral Grounding and not Phase grounding 3. what happens if any one of the phase is grounded. 4. if 15kv is grounded directly what will happen, why it should not be grounded like that 5. use of of NGTR(Neutral Grounding Transformer and Resistor) for grounding is helpfull and how

5 Answers   BEMCO, CSS, Powergear,

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1 kva how much amps? How to calculate ?

2 Answers   L&T,

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which sub is most horrible in four yr degree

2 Answers  

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what is transformer

63 Answers   ABB, Advance Power Controls, CERC, Electrical, Electrical Supervisor Competency Certificate, ETA, IBM, Jindal,

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what effect will 10 milliampere current cause to human body ???

1 Answers  

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Please let me know when replacing electromechanical Relays for protection of generators with sr489 multilin Relay, then there is no need to use 86 master trip relay Too. I am wondering this multilin relay has no contact to Stop breaker reclosing as 86 does

1 Answers   Neucel,

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how to calculate fuse rating for a motor

1 Answers   JSW,

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howmany insolaters needed in 66kv line

9 Answers   Essar, L&T,

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diff between UPS and inverter?

2 Answers  

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what is R Core Transformer. how it differs from normal transformers. dont search in net and post the answer.

0 Answers  

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what is merz price protection

5 Answers   NHPC,

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