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277 Volt Circulator pump (8 Posts)
277 Volt Circulator pumpI just had a customer call and ask me for a 277 volt circulator pump . Single phase , will 230v work or not? I am thinking that if the building has 277 volt/1/60 it can utilize a 480/3/60 pump perhaps . Would appreciate any help here.
230V...Won't work. It will fry the windings.
You can probably get the motor, but it may take a little time. What size are we talking about? Can you give the specifics?
You could probably find a 120V or 208V source somewhere nearby in the building. Or use a step down transformer in a worst case scenario.Bob Boan
You can choose to do what you want, but you cannot choose the consequences.
I DON'TTHINK 230 WILL WORK ON 277 CUZ 277 IS LINE VOLTAGE. THE DIFFERANCE IS THAT 277 IS 1 SINGLE HOT LEAD AT 277V, AND 230 IS 277 STEPPED DOWN TO 220-240V (230 ALL THE SAME) WITH TO HOT LEADS AT 110-120V. SO A 277 MOTOR WILL HAVE A HOT/NEUTRAL, AND A 230 MOTOR WILL HAVE HOT/HOT/NEUTRAL-GROUND.
SORRY 4 THE CAPS, ANDif u tried to use a 480/3/60 with only 1 phase it will overheat, nodoubt. why does it have to be 277v? is the pump that he has now is 277v?
277V single phaseonly exists in a 480 Wye system, so there is 480/3ø in the building someplace. It's hard to find 480/3ø motors smaller than half a horsepower so as Ironman pointed out, it really depends on the pump.
ECMs are typically limited to 250V supplies, which is unfortunate since they could quite easily be designed to run on 90-300V, making them applicable to pretty much any AC power system on the planet.
Transformer?Assuming it's a reasonable sized pump you could pick up a transformer to convert that 277 down to 120 and use a standard pump. Just make sure the transformer is big enough for the wattage you need.
Transformers are not cheap but probably not much more than a 277v pump.
BobSmith G8-3 with EZ Gas @112,000 BTU, Single pipe steam
Vaporstat with a 12oz cut-out and 4oz cut-in
No such thing.I think your original thought is correct 480/3/60 is what you need. 277 is the voltage of one leg of a 480 3 phase just as 120v is one leg a 208v 3 phase (think cubed root). I don't believe the product he suggested exists. I have seen systems with 480/3/60 in both wet rotor and 3 piece floor models.
pricowhat did u do?