120v verse 277v

[2571]

Just left meetings with an Industrial lighting manufacture sale rep and He quoted “there is no difference between 120v to 277v ballast.” The difference I was concerning myself with was the operating cost. I believed the 277v version was cheaper to operate because of the reduced amps and watts. His explanation was they are both produce the same thing in the end and that what really mattered.

thank you
2571

 

[itsmoked]

and HID?

Keith Cress
Flamin Systems, Inc.-

http://www.flaminsystems.com

 

[BlownUp]

Hi itsmoked,

I have seen electronic ballast for HID lighting but don't think they are much if any more efficient than magnetic for HIDs. Most of what I have seen electronic HID ballast for is some type of special application.

The efficiency gain in fluorescents is a result of the operating frequency and physics associated with the lamp. Above about 10kHz to 12kHz the physics of developing a discharge in a fluorescent lamp changes. At higher frequencies it becomes easier (i.e. less power) to cause the electrons in the fluorescent lamp to change energy state and release photons. This phenomenon begins to plateau around 15kHz to 20kHz. For a 4ft, 32W, T8 type lamp an electronic ballast operating at about 25kHz will produce the same amount of light as a magnetic with only about 25W instead of 32W.

 

[itsmoked]

Thanks BU.

Keith Cress
Flamin Systems, Inc.-

http://www.flaminsystems.com