BIG generator.
- Thread starter Stuart in MN
- Start date
wyliesdiesels
Well-known member
Oh ok. The way people were talking about the standby generator failure, it sounded like one data center!
RCStocker
Well-known member
Hospitals and many other industries use these large generators. The hospital in Loma Linda California has its own power plant and a back up. All places with patients on support equipment have back ups.
The military uses large ones like these.
Boeing has them for Back ups for thier power.
There are more of them out there in use than one would think.
Her on the farm in Indiana I have a large back up generator. We have so many storms that put the power out it is nice to have.
I think all dairy farms have back up generators. They can not go 24 hours with out milking the cows and if the power is out there is not enough hands to milk by hand.
That is awesome, although I'm a fan of BIG OL' MTU diesels. 
I learned the other day about Rotary UPS (basically a big flywheel spun by main power, which spins a generator, and when the power goes out, it has enough inertia to keep spinning and supplying power until the generator kicks in.) THOUGHT that was awesome!
I learned the other day about Rotary UPS (basically a big flywheel spun by main power, which spins a generator, and when the power goes out, it has enough inertia to keep spinning and supplying power until the generator kicks in.) THOUGHT that was awesome!
Ric in Richmond
Well-known member
here's an standby setup for a power plant that one of the other guys in my office designed recently. Five cat 3516's, 12.5mw total output. In this case the customer opted to have the generators custom painted black instead of cat yellow, which came out pretty cool. The local cat distributor included this photo in their 2012 calendar.
are the turbos glowing in that picture???????
rlitman
Well-known member
For just a few seconds though. If you generator isn't up to speed by the count of 10, you probably dropped the output load. That's why generators on such systems often have two starter motors.
They're also actually spinning an alternator with DC output. That is then put back to AC with an inverter. That way, as the flywheel slows down as it loses inertia, your frequency doesn't slow down with it.
I was just at a facility with a rotary UPS the other day. Their flywheel was magnetically levitated. In previous systems I've seen, the flywheel was spinning in a vacuum. In this system, it was spinning in a helium environment.
wyliesdiesels
Well-known member
What the heck was that last post before it disappeared? Spam?
sberry
Banned
The casino has backups. Evidently if the place shut down for a few hours it would get pricey.
sberry
Banned
My set up is marginal, it works. I am on 2 transformers so cant shave genset for both, ideally would be to find some 4/0 alum to interconnect, could be lighter if I dropped a little load and conveniently located, and when I change water heater in one unit go to gas.
My main hurt is a 3 hp well, it takes most of the poop my 8K welding machine has to run it. I am watchful, when I start if the water is down I pump the well separate till the system is fully charged and then turn the power up to the rest of the place after I disconnect any un needed electric appliances, air comps, heaters etc. It will run the place with the well provided not every fridge or freezer comes on at the same time. We were down in a rare storm a week last winter, it was fairly mild out and I ran everything till midnight, started at 7 or 8 in the morning, must have used 100 gallons or so of fuel.
Ideally I should do some re wire and get a 25Kpto drive for a tractor, I can throw it manual in the rare event its needed but now I have to run 2 units, its all kind of a pain but bearable considering the need. Only reason I havnt done anything different is cost/return.