Answer / jeyachandran.b

THE FRQUENCY DRIVE (VFD) WITH V/F= CONSTAND PRINCIBLE

Answer / chris sullens

uses pulsed width modulation to control speed of
motor.Siemens.com has an EXCELLENT!!!! web site. Too much 4
me 2 list about. it is ACTUALLY DC that is pulsed to
motor.480 VAC X 1.414=678.72 Peak 2 Peak voltage DC Volts
at motor.Standing Wave can be up close 2 3000 VOLTS!!! on a
480 motor it is a fundamental of the Frenquency and
length.In which case U need 2 add a REACTOR [Filter] or
DELTA/WYE ISOLATION XFMR.If drive is to DC motor DO NOT
bond XO.

Is there any option to replace two Genset of capacity 125KVA with one higher capacity for same office?

8 Answers  

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bsec exam syllabus (mis)

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To prevent the mal operation of a differentially connected relay while energizing a transformer, the relay restraining coil is baised with (a)second harmonic current (b)fifth harmonic current (c)third harmonic current (d)seventh harmonic current

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what is the speed of electricity?

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In the diesel generator if there is an AVR (auto voltage regulator) gone faulty, in this condition is there any way to generate the voltage from the alternator? I need a brief explanation can you please help somebody

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at what rate the micro controller increment its timer....is it 1micro seconds or 1/(12*10^6) seconds

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7. Hrc fuse provides best protection against.......

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Explain the function and difference of Restricted earth fault, simple earth fault and sensitive earth fault with connection diagram.

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two phases with neutral supply can be taken in 3C X 10 sq.mm cable .

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