why we somewhere use ryb
phase sequance, somewhere
use uvw, and somewhere abc??

Answer Posted / kj

RYB is for the phase colours Red Yellow Blue the usual
colours used for ther insulation.
ABC is an old standard
UVW is from a newer standard

Is This Answer Correct ?    0 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

How to calculate per unit impedance of transformer?

1565


What is mean by spike arrester(Voltage Operated)

1602


What is the Nyquist criterion regarding control systems?

657


Why space heater is required for each verical bus bar chamber? if one space heater is adequate or not for anti condensation?

2075


In a carnot engine with an efficiency of 40%, the heat rejected to the sink at 27 C is 60 kJ, then the heat supplied in kJ to the engine by the sources is

671






11 kV line deraction check by an Engineer.

1515


Why lose 1 phase voltage in 33kv to 415v stepdown transformer

1313


Is there any type of starter for DC motor other than two point,Three point and Four point starters?

1650


what is mean by parallel operation of permanent magnet generators

1475


3- What is the target from Zero Impedance, Single Phase Imp., S/C Imp. and magnetic balance tests?

1397


why HT armoured cable does not glanding

3691


in the case of 6.6kv motor starter combination contain fuses on it VCB. but in 11KV motor starter combination Fuses are not using in it's VCB why?

1815


I want to know the 'Test voltage' for Tandelta testing of 3.3 / 6.6 / 11 KV Motors. Please explain

1785


what is proper capacitor placement? How to evaluate capacitor size?

1639


reason of diode failure in alternator

1403