Answer / rajeswari

there is no particular reason to give the colours...any
colours can be given to the phase .its just to differentiate
each other.in asia its supposed to be a rule to use 1ly red
blue and green......

Answer / m s babu

for 3phase sequence identification

Answer / suburavichandran

still u gonna use single phase loads to the most... u have to identify the loads connected to each phase to sort out it during a fault condition...

to simplify fault finding process.

Answer / sheikh

Normally different colors used to identification of phase and neutral in a transformer. almost every where using the co lours for identifying the phase sequence as given below

Red = R , Yellow = S , Blue = T , Black = N

Answer / mohammad farman khan-abu dhabi

To recognise phase for 3 phase current

We have three 33kv substations. All of them energised by same source.When i am checking the phase sequence between one substation to other substation (like R Phase to R Phase) by multimeter i am getting some voltage.Near to LT panels UPS panels are there. Can u explain whether any possible to happen like that. In Phase SEquencemeter is showing correctly in both substations. How is it happen. Explain me.Explain me communication signal will produce Phase difference on this case.

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describe your self.

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