I've heard that most of the substations are rated in
multiples of 1.11 because of form factor.What is form factor?

Answer Posted / vikash

Form Factor= R.M.S value / Average value of current
= 1.11

R.M.S value stands for root mean square. It is defined as DC component of ac current which produces heating effect.

Is This Answer Correct ?    6 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

if we have a industrial load of 400 kilowatts with 415 volt AC then how much total harmonic distortion (thd%) should be acceptable for steady power system.

1548


How can you sized or estimate the ligthning arrester current rating?

1587


What is the function of under voltage release ?

969


Testing procedure of DG alternator stability test

918


what id a dry type transformers and its function ?

1319






what is the effect of back reactive power on the generator ?

1719


What is mean by STUB protection?

1556


How line capacitance & line inductance varies with increase in height tower.

1839


In EHV transmission line a neutral grounding reactor is often placed at neutral point of shunt reactors. What is the recommended protection for this neutral grounding reactor? Should I use a fast closing switch to bypass neutral grounding reactor when this protection operates?

2729


What are the main faults of DC generators?

2332


What is a single phase autotransformer?

610


relation between power station capacity and voltage level?

1569


How to decide and select the different earthing wire size for the different types of earthing

1785


how we will deside the high voltage value

1429


How I can Compare 120v/60Hz versus 220v/50Hz ? Please tell me both advantage and disadvantage ......

1533