Answer / kalirajan.n

Inrush current or input surge current refers to the maximum,
instantaneous input current drawn by an electrical device
when first turned on. For example, incandescent light bulbs
have high inrush currents until their filaments warm up and
their resistance increases. Alternating current electric
motors and transformers may draw several times their normal
full-load current when first energized, for a few cycles of
the input waveform. Power converters also feature high
inrush currents relative to their steady state currents

Answer / kapil mishra

inruse current always occurs in inductive coil like
transformer, reactor during charging . it happens due to
non availability of back e.m.f. . inrush current is
praporsanal to V -E/R+X .

Answer / asif

transformer initial current called inrush current which is
6 to 10 time more than its normal rated current according
to its kva.

Answer / bhavin

When a transformer is first energized a transient current
much larger than the rated transformer current can flow for
several cycles. This is caused because the transformer will
always have some residual flux density and when the
transformer is reenergized the incoming flux will add to
the already existing flux which will cause the transformer
to move into saturation.

Answer / atul rastogi

Inrush current is the current drawn by the load at the time
of switching. It depends upon starting impedence of the
load as some load have changing impedence depending upon -
temp., fr. etc.

Answer / subra

During the staring period The electrical equipments are taking more current example aircondion units, lifts , transformers,chillers etc
this may be 6 times of the ratedcurrent
this instantanious current is called inrushcurrent

Answer / chandan

inrush current means the starting current of a transformer or a motor.During starting, the inductive equipment draws huge current from its source.There is 2nd,3rd,4th and so on harmonics frequency currents are present with the fundamental frequency during the charging of the equipment.Specially ,2nd harmonic currents are predominantly present during the starting or charging of the equipment.

Answer / dolnarayan patel

Flow of heavy current for short duration.

what is the purpose of battery tap voltage.

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2 Answers  

Questions :- HR- Q.1 about yourself & family background ? Q.2 Why u choose Power sector as ur carrier starting not any other sector ?? Q. 3 What think abt NTPC ? Techincal Questions:- Q.1 about Vocational Training……What u did , see the main equipments….etc Q.2 Why a transformer Noise during its running condition ? Q.3 about transformer oil material & Test name for the measurement of its dielectric strength & wht will u do if its dielectric strength goes low ? ……..some discussion type ? Q.4 What is relation between transmission lines & Communication lines ? Q.5 Which Machine u will prefer to use at a place where flammable gases are coming out & why ? Q.6 how fault in an electric system is detected & hw protection of equipments is done ? Q.7 Why we didn’t feel electric shock in an electric train ?? Q.8 Anything u want to ask from us ??

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what is transformor oil gread

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1 Answers  

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1 Answers  

What is difference between PLC and SCADA

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