A couple of things I added to our generator here (110KVA Perkins turbo diesel) which have really made life easier are a Murphy LM2000 Oil Level Maintainer http://www.fwmurphy.com/product_search/?p=lm2000 and a ControlByWeb X301 controller http://www.controlbyweb.com/x301/. I'm not sure if the X301 would be of much benefit for a WISP backup generator (it gives Ethernet based control and monitoring) but the Murphy Oil Level Maintainer probably would be handy. I installed our LM2000 by connecting to the oil drain port (where the drain plug was) for the oil connection and I vented the LM2000 back to the crankcase through the dipstick tube (after removing the dipstick of course). The only other connection is a hose going up to an overhead oil storage tank (5 gallon bucket in my case). The LM2000 has a big sight glass so you don't need the dipstick anymore and inside it has a float valve. It keeps the oil level just perfect. Here in the jungle our generator is our only power. The X 301 has a schedule and it starts and stops the generator automatically, and when lightning approaches we can shut it down via the web interface. With the oil level maintained we don't even have to go down to the plant house anymore except for period inspections and maintenance. Our generator has a DeepSea controller so it interfaces really nicely with the X301 and the heavy duty contactor. It's made for standby/backup operation.
Greg On Jul 30, 2010, at 5:36 PM, jp wrote: > If you go propane/NG upsize quite a bit to have smooth power. > Diesel's torque makes for smoother power output undering changing loads. > Diesel can run full rated load of datacenter load. > > I went diesel (Cummins/Onan) for my datacenter. I put the generator > inside to prevent winter fuel gelling, rodents, rust, etc... It's on a > 275 gallon heating oil tank. Looks almost like new still after 10 years. > There's a whole set of design requirements for having a generator > inside, in terms of fire safety, fresh air flow for combusition and > cooling, etc..., that's why most are outside. I was building from > scratch, so I put it where I wanted it. Had a boatbuilder put a custom > stainless steel exhaust on it coming out the side of the building. > > Get something that matches the voltage and phase your utility provides. > Don't get a 1 phase for your 3phase service. Get an appropriate high > quality auto transfter switch that can switch your whole datacenter > over, not just select circuits. The transfer switch should also be able > to exercize the generator on a schedule. > > Check the hour meter and fluids once in a while so you know it's > exercizing properly and ready for use. > > On Thu, Jul 29, 2010 at 03:02:28PM -0400, Chuck Hogg wrote: >> Ok, so I am in the market for a Generator. Looking for probably >> 30-45kW. I've heard people say I need a PMG Exciter?? Anyone with >> experience in doing this? It's to support our datacenter, a few racks, >> a few 2200 UPS's and PDU's, and Cooling. I find all kinds of different >> ones on eBay and elsewhere, and am hoping someone already did the >> legwork and figured out everything they needed and can share? >> >> >> >> Regards, >> >> Chuck Hogg >> >> Shelby Broadband >> 502-722-9292 >> ch...@shelbybb.com <mailto:ch...@shelbybb.com> >> >> http://www.shelbybb.com <http://www.shelbybb.com> >> >> >> > >> >> >> -------------------------------------------------------------------------------- >> WISPA Wants You! Join today! >> http://signup.wispa.org/ >> -------------------------------------------------------------------------------- >> >> WISPA Wireless List: wireless@wispa.org >> >> Subscribe/Unsubscribe: >> http://lists.wispa.org/mailman/listinfo/wireless >> >> Archives: http://lists.wispa.org/pipermail/wireless/ > > -- > /* > Jason Philbrook | Midcoast Internet Solutions - Wireless and DSL > KB1IOJ | Broadband Internet Access, Dialup, and Hosting > http://f64.nu/ | for Midcoast Maine http://www.midcoast.com/ > */ > > > -------------------------------------------------------------------------------- > WISPA Wants You! Join today! > http://signup.wispa.org/ > -------------------------------------------------------------------------------- > > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
