Freight Elevator AC Motor
Freight Elevator AC Motor
(OP)
Hi all,
Can someone tell me which are the ideal AC Motors for freight elevators please ?
Best Regards
Barbo
Can someone tell me which are the ideal AC Motors for freight elevators please ?
Best Regards
Barbo





RE: Freight Elevator AC Motor
Keith Cress
kcress - http://www.flaminsystems.com
RE: Freight Elevator AC Motor
Regards
Barbo
RE: Freight Elevator AC Motor
Keith is right. Your load is big, but I have been in stronger elevators. Last on whose machine room I was in was rated 5000 lb at 4 ft/sec. The weight is about the same as yours, but it's a bit faster.
It had a large (didn't read the nameplate) induction motor and a variable speed drive.
Best to you,
Goober Dave
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RE: Freight Elevator AC Motor
It's my first project in designing an elevator so i dont have such experience ..
What things should i consider when designing a freight elevator. I was thinking that the motor that i have to choose needs to be able to cope for stoppages as its duty is going to be irregular, and also for braking.
do you know any sites which can guide me to choose an ac motor for such elevator designs ?
Best Regards
Barbo
RE: Freight Elevator AC Motor
RE: Freight Elevator AC Motor
Building your own will be like deciding to build your own refrigerator from a big pile of raw materials - starting with only the mining rites..
Keith Cress
kcress - http://www.flaminsystems.com
RE: Freight Elevator AC Motor
Regards
Barbo
RE: Freight Elevator AC Motor
RE: Freight Elevator AC Motor
I once had to be involved in the process of getting soft starters certified by UL and CSA for use in elevator applications. The requirements were night and day different, UL was tougher than regular soft starter listings, but CSA was incredibly more difficult to pass, it involved what I would think to be impossible duty cycle testing. Every time I get asked to get involved in something like that again, I politely decline. My blood pressure is already too high...
"Will work for (the memory of) salami"
RE: Freight Elevator AC Motor
Best Regards
Barbo
RE: Freight Elevator AC Motor
I'm not sure why you're worried about the motor selection, but it will be what it will be, the only influence you have is in the specification of the capacity and speed. The elevator vendors have design consultants that will work with you to select an elevator and they will then provide a package that specifies what the building needs to provide in terms of space, structure, power, and HVAC. If it is a hydraulic elevator the motor will near the base of the elevator. If it is a traction elevator the motor can be at either the top or bottom of the shaft, but motor at the top is far less expensive than motor at the bottom; that is also something that you can specify, but probably doesn't change the motor that the elevator vendor will select and supply.
RE: Freight Elevator AC Motor
Best Regards
Barbo
RE: Freight Elevator AC Motor
RE: Freight Elevator AC Motor
In that case, you may or may not get help here depending on how the responders feel about it, but it would be better to be up front about the context for your question.
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(2B)+(2B)' ?
RE: Freight Elevator AC Motor
But don't bother specifying it or choosing it, see what the manufacturer chooses.
Best to you,
Goober Dave
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RE: Freight Elevator AC Motor