Stu Faulkner Posted March 17, 2017 Share Posted March 17, 2017 I need a UPS. I know how to fit one but i'm not sure of the type/size/battery type. It does not need to be continuous as its running an electric gate and I do not want people from getting locked in. The gate draws 16 Amp single phase but i'm not sure of its start up load at this time (Its not been fitted yet) The power does not go out for long if ever but might need to open the gate about twenty times before the power goes back on. The gate is 130 meters away from the supply but due to the volt drop I could fit it in a local feeder pillar. Any ideas? Quote Link to comment Share on other sites More sharing options...
corsechris Posted March 17, 2017 Share Posted March 17, 2017 Is it really 4kW? That sounds like a pretty hefty motor. That could be the inrush current rating? anyhoo, find out the kVA required and get an UPS that can supply that much power. Duration of supply is then determind by capacity but I think you'll be looking for a decent bit of kit. Quote Link to comment Share on other sites More sharing options...
Stu Faulkner Posted March 17, 2017 Author Share Posted March 17, 2017 4 minutes ago, corsechris said: Is it really 4kW? That sounds like a pretty hefty motor. That could be the inrush current rating? anyhoo, find out the kVA required and get an UPS that can supply that much power. Duration of supply is then determind by capacity but I think you'll be looking for a decent bit of kit. Its a eight foot high sliding vehicle gate to keep people out. The gate manufacturer has specified a 16 Amp supply so I'm hoping it includes full start up load. Quote Link to comment Share on other sites More sharing options...
Thrustyjust Posted March 17, 2017 Share Posted March 17, 2017 Youre going to need a shed load of batteries and that motor I would suspect would be a high torque motor , so will use a lot of battery capacity ............. Quote Link to comment Share on other sites More sharing options...
Yanto Posted March 17, 2017 Share Posted March 17, 2017 Don't they normally have a manual override so you can open/close in event of power failure, like opening a sluice gate on a lock? Quote Link to comment Share on other sites More sharing options...
corsechris Posted March 17, 2017 Share Posted March 17, 2017 https://www.ecopowersupplies.com/4kva-ups Quote Link to comment Share on other sites More sharing options...
Ian Kinder (Bagpuss) - Joint Peak District AO Posted March 17, 2017 Share Posted March 17, 2017 @finkangel I think you're looking more for a standby generator than UPS. 1 Quote Link to comment Share on other sites More sharing options...
Stu Faulkner Posted March 17, 2017 Author Share Posted March 17, 2017 1 minute ago, IanK said: @finkangel I think you're looking more for a standby generator than UPS. You could be right. Not that hard to do either. Quote Link to comment Share on other sites More sharing options...
Thrustyjust Posted March 17, 2017 Share Posted March 17, 2017 As said about the generators, when I used to look run up generators for banks, we used to drop the incommer supply to allow the ups to hold the servers , while the generator kicked up to speed and within 30 secs , the generator was on line and supporting power until mains was put back on. I dont think we had more than 5 mins ups support before we were in problems . 1 Quote Link to comment Share on other sites More sharing options...
corsechris Posted March 18, 2017 Share Posted March 18, 2017 The trouble with most solutions is unless you are rigourous about maintenance, they will do a Fawlty Towers fire extinguisher job on you every time you need them, so don't forget to allow for that aspect. A battery based UPS is fine in the right scenario, as is a backup supply. You don't appear to need sustained power, just a backup, so I think I'd probably favour a generator as well TBH. At my last place we had a range of solutions for various systems. Most critical had dual battery UPS fed from A supply that had flywheel UPS to hold up supply while the generators fired up and stabilised (two redundant systems of same), less critical had battery UPS on a different single generator backed supply. All systems got checked on a regualr and routine basis, fuel reserves were montired to ensure they didn't degrade, replaced as required. It can get expensive. 2 Quote Link to comment Share on other sites More sharing options...
neptune Posted April 19, 2017 Share Posted April 19, 2017 @finkangel if you're not sorted. I install auto gates . Let me have details or a picture of the motor. I am unaware of any single phase motor that draws that much current Quote Link to comment Share on other sites More sharing options...
Stu Faulkner Posted April 19, 2017 Author Share Posted April 19, 2017 1 hour ago, neptune said: @finkangel if you're not sorted. I install auto gates . Let me have details or a picture of the motor. I am unaware of any single phase motor that draws that much current Thanks. The gates will be going in next week so I'll have a look. Quote Link to comment Share on other sites More sharing options...
Deanspoors Posted April 20, 2017 Share Posted April 20, 2017 Sounds like a manual override would be the easiest solution here. I'd check with the supplier to see if there is an override function. Quote Link to comment Share on other sites More sharing options...
Stu Faulkner Posted April 20, 2017 Author Share Posted April 20, 2017 45 minutes ago, Deanspoors said: Sounds like a manual override would be the easiest solution here. I'd check with the supplier to see if there is an override function. This is looking Like the easiest approach. Quote Link to comment Share on other sites More sharing options...
Trevor Little (Trevturtle) - Treasurer Posted April 20, 2017 Share Posted April 20, 2017 Is this for 'Fort Finkangel'? sorry i had to ask 1 Quote Link to comment Share on other sites More sharing options...
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