Excellent! Thank you! I just got off the phone with Donegal Rewinds and ran some of your suggestions by them. They said it all makes sense, they just need to see the whole unit and then can figure out the best way to go -- new motor, modify existing, inline kit (VFD, filter, etc.). So I'll...
Gentlemen, based on what I'm hearing are you saying (jraef's post) this motor won't work with a VFD or if I have a motor that is not VFD friendly I need to put a dv/dt filter (don't know what that is) in the line feeding the motor?
Also from what I've gathered y'all are suggesting these...
waross, yes SIR! That has been the nice thing about the discussion, a lot of balloons were floated, some got shot down, others are floating, some low, some high. And regardless of what happened, hats off to all the balloon floaters. Now it looks like it is up to me to figure out what can be...
Compositepro, here in Ireland there is, for the most part, no A/C in cars or homes. It's just not needed more than a few days a year. Maybe. Heating means putting on an extra sweater. And refrigeration means to just leave it out on the countertop. I'm not being facetious, it's true...
Grind absolutely effects the taste of coffee. And grind size needs to be set for the coffee brewing method, i.e. a French Press likes a different grind than a Pour-over machine, which likes a different grind than say an AeroPress, which likes a different grind than an espresso machine, which...
itsmoked,
Would that I could. I'm a wholesale coffee roaster. Right now I run 3, 1hp grinders and I run them just about all day, every day, shutting them down for long periods to cool. It's just past 10pm here and my son is still outside grinding coffee. This is a huge bottle-neck for us...
Oh, I did talk to a manufacturer in the U.S. (because it was after hours here) and he recommended phase converting 230v 1ph to 230v 3ph and then transforming that output to 400v 3ph. The kicker though is he thought the phase conversion part would require a 60A to 70A service for my 7.5hp motor...
The kit that is £400 more is -- and apologies if I misspoke earlier -- a DIGITAL PHASE CONVERTER. Drives Direct in the UK is the manufacturer I'm speaking with although I'm sure there are others.
jraef, the motor voltage rating, the way I read it on the nameplate, is 400v/50hz or 480v/60hz. But I am assuming you can see the picture of the motor nameplate above in my original post to start this thread. If that is the case I'm thinking you are asking a different question than what...
This is a new thread from my initial 'Phase Converter question - 1ph to 3ph'. (To all those that answered thanks very much). Instead of continuing that thread I thought it best to start a fresh one.
I have more data now. Our 3 phase 7.5hp/5/5kw coffee grinder's motor plate is at this link so...
Jraef, no offence taken. None at all! You hit the nail on the head, I am going to be relying on the electrician. And that is just it, a single person -- my electrician -- usually has one way of doing something but here, with multiple minds at work, I can see several ways of doing something...
Gentlemen, thank you very much for your comments. Here's what I can tell you . . .
On the suggestion of bringing in 3ph power that is not in the cards on several levels. (Remember, this is Ireland) -- The closest 3ph power (I am told) is about 1.5 km down the road from me, so you can imagine...
I am in Ireland (230 v / 50 Hz). At my home shop I have single phase power. I'm buying a large coffee grinding machine with a 5.5 kW (7.5 hp), 3 phase motor . So obviously I need a phase converter. I am looking at a 7.5 kW rotary phase converter with a motor start capacity of 5.5 kW. Before...
