Just to chime in, what the electrical distribution industry calls high and low voltage is quite different from just about everybody else. They work with such a vast (and high) range of voltages that they even have a medium voltage. Just about the only people in our industry who are aware of that are large tonnage chiller techs, at least that is my experience. It is also my belief that that is why you will sometimes here the term "line voltage" used instead or "high voltage" when discussing voltage supplied to the motor and motor starter. One is always correct (line), the other (high)- not always, in fact, usually not. R123 did an as usual great job of explaining, I just thought I would point out how, and why, the terminology can be confusing.
As a side note, the higher voltage chillers pull less amps which means smaller copper wire size but thicker insulation. For expample, a 1200 ton chiller at 460 volts will pull about 1000 amps at full load where a 1200 ton 4160 volt chiller will pull about 110 amps.
Both Trane and York offer chiller motors with up to 13,200 volts now. I am unsure about other manufacturers but I am sure they probably do as well.
This is practical because you dont need a transformer and can use smaller conductors? Anything else? Seems to me Kw would remain the same and the chance of arc flash and shorts would greatly increase.
nucrlchilller, that explanation was awesome. Thanks so much, but I have a afd on the machine. I will copy and paste your explanation in my good reader folder under trane chillers thouigh!! I did not get any trips after that one incident. I did however try and contact trane bas guys to question why the tracer summit took an hour to reset! no reply yet!!
You're welcome 000, but are you sure you don't have me confused with somebody else? R123, maybe? Which explanation are you referring too? Sounds like I may want to read it. :grin2: :cheers:
also going to need help with getting my foot out of my mouth!!!
your right, Thanks r-123!!
BUT thats for replying to the thread also nuclrchiller!!!