480V/3-phase line-to-line value

[Toros]

Hi,
What is the values of line- to- line of a 480v , delta
(line-to-line of 120/240v system is 240v , what about 480v system??)

 

[GoldDigger]

480 volt.

120/240 single phase 3-wire is a single phase system in which the two hot leads are exactly opposite in phase (or identical in phase but opposite in polarity, depending on how you prefer to look at it.)

A pure 480 volt delta has no neutral and therefore no line to neutral voltage.

If there is also a neutral, it will be described as 480Y/277.
This means (surprisingly) 480 volt delta/277 volt wye.
The line to neutral voltage is 277 and the line-to-line voltage is 480.
You can connect either wye or delta loads with the appropriate voltage rating or either 277 or 480V single phase loads.




Tapatalk...

 

[mivey]

You could also have a 240/480 delta with a 416 volt high leg.

 

[kingpb]

A pure 480 volt delta has no neutral and therefore no line to neutral voltage.

If there is also a neutral, it will be described as 480Y/277.
This means (surprisingly) 480 volt delta/277 volt wye.
The line to neutral voltage is 277 and the line-to-line voltage is 480.
You can connect either wye or delta loads with the appropriate voltage rating or either 277 or 480V single phase loads.
Tapatalk...

A designation of 480Y/277V means it is a 3 phase, 4 wire system connected in a wye configuration. The "y" designates this, at least according to ANSI C84.1. 480V written alone means 3 phase 3-Wire and this could be derived from a wye or delta.

You can have a 3ph, 4-wire 480V system with a neutral but it would be written as 480V Delta, high-leg.

 

[kingpb]

Hi,
What is the values of line- to- line of a 480v , delta
(line-to-line of 120/240v system is 240v , what about 480v system??)

480V

 

[mivey]

480V

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