0
R-Y-B is a British standard designation, similar to A-B-C in the Americas.
AnswerThe letters, R-Y-B, stand for 'red-yellow-blue', which were the standard colours used to identify the line (not 'phase') conductors of a three-phase power supply in the United Kingdom until the introduction of the EU standard, 'brown-black-grey'. The obvious drawback with the EU colour code is that the corresponding letters, 'B-B-G', are not much use for labelling line conductors in schematic diagrams!
In practise, the colours red-yellow-blue continue to be used throughout the British transmission and distribution system, whereas the colours brown-black-grey are now mandatory for low-voltage installations such as residences, etc.
The letter sequence, R-Y-B, corresponds to the normal phase sequence for a three-phase system.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
How do you know Ryb phases when color coding is not there?
First of all, the colours red, yellow, and blue, are applied to LINES not to phases! To determine which line is which, you must compare them with lines that are identified. This process is known as 'phasing out', and is difficult to explain without using a diagram. I suggest you check out 'phasing out' on the internet.
What are the three important phases in the manufacturing process?
3 phases in manufacturing process
What is 3-phase generator?
a generator is built in three phases
What are the three phases in a circuit switched network?
The squadron of the zorkat forest.
What does the phases on a nameplate of a motor mean?
On a three phase motor, the phases give you direction for how to hook the motor up to make it spin one direction vs. the other. If you hook up such a motor blindly with all three phases, it may spin in the opposite direction you want; to fix, you swap any two of the three phase connections.
For wire phasing why use RYB and not ABC?
RYB is identification of three phases by colour - Red, Yellow and Blue.
What is the difference between three phase load and phase supply?
How much current equipments are drawing from three phases (combined or individual) is called three phase load and how much supply we are getting from source is called three phase supply. Ex. In INDIA single phase supply is 220 volt ac with neutral. So in three phase supply all RYB phases should be 220 volts ac with neutral individually. If we calculate with phase to phase than it shoulb be 415 volts ac.
Why the number of phases are limited only to three why not five or six?
Physical phases of matter are not limited to three. Phases of the moon are not limited to three. Phases of a wave form are not limited to three. What phase is limited to three?
How do you know Ryb phases when color coding is not there?
First of all, the colours red, yellow, and blue, are applied to LINES not to phases! To determine which line is which, you must compare them with lines that are identified. This process is known as 'phasing out', and is difficult to explain without using a diagram. I suggest you check out 'phasing out' on the internet.
What are the three phases of drug effects?
There are three phases of drug effects. These three phases are the administration phase, active phase, and the metabolism phase.
What phases does Empyema have?
Its development can be divided into three phases
Angle between three phases?
The generated angle between phases in a three phase system is 120 degrees.
What are the 3 phases of mater?
the three phases are solid,liquid, and gas, but there not only three they have plasma,and liquid cyrstal.
Which three phases make up interphase?
The three phases that make up interphase are G1, S, and G2.
What are the three important phases in the manufacturing process?
3 phases in manufacturing process
What is the symbol of phase sequence?
The symbol of phase sequence is RYB
Two phases of swallowing?
There are actually three phases of swallowing and not two as the question asks. The three phases of swallowing includes: the oral phase, the Pharyngeal Phase, and the Esophageal Phase.
