off grid generator voltage

castilloj
castilloj Solar Expert Posts: 208 ✭
in Off Grid Solar & Battery Systems #1
Hey guys, i just had my 11kw Sdmo generator rebuilt , and I'm having power issues.
i purchased a new AVR but my question is . Do i adjust the HZ while it has a load or no load?
Im currently using 16 amps my hertz are 58 and my voltage is 220.
· Share on Twitter

Comments

  • Cariboocoot
    Cariboocoot Banned Posts: 17,615 ✭✭✭
    #2
    Re: off grid generator voltage

    I do not know the specs for your generator but as a rule an unloaded unit will rev slightly higher and thus the frequency will be above 60 Hz. As the load on it increases the engine will slow slightly, bringing the frequency down with it until it is below 60 Hz. Tolerance is usually no more than 60 Hz +/- 2 Hz.
    · Share on Twitter
  • westbranch
    westbranch Solar Expert Posts: 5,183 ✭✭✭✭
    #3
    Re: off grid generator voltage

    I adjusted my screamer when it had a load on it, used my Kill-a-Watt to do it. As Coot says, unloaded it is a bit high on Hz.
     
    KID #51B  4s 140W to 24V 900Ah C&D AGM
    CL#29032 FW 2126/ 2073/ 2133 175A E-Panel WBjr, 3 x 4s 140W to 24V 900Ah C&D AGM 
    Cotek ST1500W 24V Inverter,OmniCharge 3024,
    2 x Cisco WRT54GL i/c DD-WRT Rtr & Bridge,
    Eu3/2/1000i Gens, 1680W & E-Panel/WBjr to come, CL #647 asleep
    West Chilcotin, BC, Canada
    · Share on Twitter
  • mike95490
    mike95490 Solar Expert Posts: 9,583 ✭✭✭✭✭
    #4
    Re: off grid generator voltage

    robin/subaru diesel genset 2913 65hz 256v unloaded 64hz 254v loaded (stinkers want me to carry it to a service center to adjust it)
    6hp CS diesel "1940" 62hz 242v unloaded 58hz 240v loaded (straight ST head, no AVR
    Powerfab top of pole PV mount | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
    || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
    || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

    solar: http://tinyurl.com/LMR-Solar
    gen: http://tinyurl.com/LMR-Lister ,

    · Share on Twitter
  • Ralph Day
    Ralph Day Solar Expert Posts: 1,022 ✭✭✭✭
    #5
    Re: off grid generator voltage

    Mike,
    On my subaru I drilled a hole in the metal platform beneath the throttle lever (on/off arm?), and mounted a long bolt with some nuts. To adjust the Hz/speed I just unlocked the twin nuts and turned the bolt either up or down. The top of the bolt was in contact with the spring loaded lever...hence a throttle adjustment. The unloaded Hz was also in the 65 range, but the adjustment could have it running at 60Hz or whatever you desired. IIRC it was about 62hz unloaded to give 60hz under load.

    Ralph
    · Share on Twitter
  • CDN_VT
    CDN_VT Solar Expert Posts: 492 ✭✭✭
    #6
    Re: off grid generator voltage

    Sir , Looking at your Mole st Nicholas, Haiti , Im assuming that your 220 V 50 hz for the set voltages in your area , but on a wikki check It states 110V 60 Hz . Is your engine for the genset Gas or diesel? On reading Mr R Days drilling of the shut down arm to limit the RPM is not good for the Governor internals . There is always a way to adjust the "Buffer" spring of Diesels. The smaller (& cheaper) the genset , the droop of frequency change will increase , so best to adjust to mid load or where yours will normally run in load. Zero droop gensets are huge units and all smaller ones are affected.
    So on that , what are your voltages & frequencys your trying to maintain , and if you could take a few pictures & post them on the engine throttle setup , with that Im sure we could help better.

    VT
    · Share on Twitter
  • castilloj
    castilloj Solar Expert Posts: 208 ✭
    #7
    Re: off grid generator voltage

    I have SDMO 11kw diesel genet using a mitsubishi s3l2 engine -60 hz-240v 2 phase
    · Share on Twitter
  • CDN_VT
    CDN_VT Solar Expert Posts: 492 ✭✭✭
    #8
    Re: off grid generator voltage

    So your power is 110V 60 hz for a coffee maker or anything you plug in ?
    OK I'll look into the engine & see what I can find.

    A picture is worth a thousand words , and would help me & other tech's
    VT


    Edit add. Found your manual here : https://www.google.com/?gws_rd=cr&ei=SwH3UsXnK5LxoATep4CYAQ#q=mitsubishi+s3l2+engine+manual
    Pick the best one , so we stay on the same picture if you don't have a Camera .
    VT

    If you see the adjusting nut & lock nut , unscrewing (anti-clockwise) increase speed .
    · Share on Twitter
  • mike95490
    mike95490 Solar Expert Posts: 9,583 ✭✭✭✭✭
    #9
    Re: off grid generator voltage
    Ralph Day wrote: »
    Mike,
    On my subaru I drilled a hole in the metal platform beneath the throttle lever (on/off arm?), and mounted a long bolt with some nuts. ....

    I was thinking of a turnbuckle, but I'd have to put jam nuts on both ends of it, so a bolt and hook might be the ticket. I'd use a length of chain and secure that, to not have to drill anything, the Lever has 3 holes in it. I don't know how much the internal governor does, if locking down the throttle will limit power when loaded. And I don't think RPM affects the voltage, I've heard there is a "Tuning Cap" in the alternator that can be tweaked/swapped to adjust the voltage.
    Powerfab top of pole PV mount | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
    || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
    || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

    solar: http://tinyurl.com/LMR-Solar
    gen: http://tinyurl.com/LMR-Lister ,

    · Share on Twitter
  • westbranch
    westbranch Solar Expert Posts: 5,183 ✭✭✭✭
    #10
    Re: off grid generator voltage

    Mike, think there is a link to a video on that topic in one of Chris's posts on Generators, don't remember just which one...
     
    KID #51B  4s 140W to 24V 900Ah C&D AGM
    CL#29032 FW 2126/ 2073/ 2133 175A E-Panel WBjr, 3 x 4s 140W to 24V 900Ah C&D AGM 
    Cotek ST1500W 24V Inverter,OmniCharge 3024,
    2 x Cisco WRT54GL i/c DD-WRT Rtr & Bridge,
    Eu3/2/1000i Gens, 1680W & E-Panel/WBjr to come, CL #647 asleep
    West Chilcotin, BC, Canada
    · Share on Twitter
  • castilloj
    castilloj Solar Expert Posts: 208 ✭
    #11
    Re: off grid generator voltage

    Attachment not found.Attachment not found.This is a pic of the governor and the sticker on the genet.
    · Share on Twitter
  • CDN_VT
    CDN_VT Solar Expert Posts: 492 ✭✭✭
    #12
    Re: off grid generator voltage

    Did you see the posting attachments I left on post 8 .
    Try to take the pictures when you have sun & better light . They are much to dark & hard to see.
    What I see is the top view & those adjusting bolts& nuts are not the governor 60 hz adjustments . They are for idle or High idle Low & max .. Gen-sets are normally trimmed by a governor spring adjustment & a off lever to pull the fuel off.
    Your only needed to raise the speed slightly, Now @ 58hz im assuming your in the 1750-1775 rpm and will only need to add a few more till 1800 .. Or so. I left links on post 8 also for where i found the manuals.
    Please Better pictures are what is needed if Im to pick the adjusting screw.
    I do know a Master tech in the DR , and he is always griping about hard to get items, so with that consideration , lets be real sure on the correct screw.

    VT
    · Share on Twitter
  • castilloj
    castilloj Solar Expert Posts: 208 ✭
    #13
    Re: off grid generator voltage

    Attachment not found.Attachment not found.
    Here is another set.
    · Share on Twitter
  • CDN_VT
    CDN_VT Solar Expert Posts: 492 ✭✭✭
    #14
    Re: off grid generator voltage

    http://ge.tt/8LQJGxe/v/3v = mitsubishi sl series s3l s3l2 s4l s4l2 diesel engines service repair manual

    Or :
    http://www.doerak-discovery.nl/index.php?option=com_phocadownload&view=category&download=22:sl&id=4:mitsubishi&Itemid=67
    http://www.2shared.com/document/I5PkMDoz/mitsubishi_sl_series_s3l_s3l2_.html

    Now one of these will show you the area of adjustments. I can't say for 100 % not being there. Way to risky for You & I .. So is that arm on the fuel pump always free and not joined to any thing while running ? If you were to have the engine running with the electrical break off and not supplying power out to the users . Can you move that arm & here the engine speed up ? or is it the way to shut off the engine , by moving it to the furthest point & the engine stops?

    I ask because many systems may look the same but are configured for different applications ..
    At the present time a 58 hz is not the best , but its better than making a mistake.

    VT
    · Share on Twitter

Categories