designing power pack for telecom

System
System Posts: 2,511 admin
in Advanced Solar Electric Technical Forum #1
i need to reconfirm my design for supplying the power pack for telecom industry

system A

1.total load = 1500watts
2. back up per day required = 10 hours
3 autonomy = 6 days
4. system voltage = 48 v
5. sunshine hour = 2.5 hours

system B

1.total load = 2500watts
2. back up per day required = 10 hours
3 autonomy = 6 days
4. system voltage = 48 v
5. sunshine hour = 6 hours

quick suggestion is required

regard
saurabh
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Comments

  • niel
    niel Solar Expert Posts: 10,300 ✭✭✭✭
    #2
    Re: designing power pack for telecom

    maybe i'm just not reading this right, but is that total load in watt hours for every hour or the total watt hours for the entire day which you specified to be 10hrs? also, is that autonomy to take the batteries down to 50% dod after 6 days or totally dead at 100% dod after 6 days? in addition, i have to ask if you are requiring the batteries to go 24/7 for this autonomy?
    please be more specific in what you are trying to do.
    please don't duplicate your posts and do put them into the proper area as your other post has been deleted.
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  • mike95490
    mike95490 Solar Expert Posts: 9,583 ✭✭✭✭✭
    #3
    Re: designing power pack for telecom
    sriparn wrote: »
    i need to reconfirm my design for supplying the power pack for telecom industry

    system A

    1.total load = 1500watts
    2. back up per day required = 10 hours
    3 autonomy = 6 days
    4. system voltage = 48 v
    5. sunshine hour = 2.5 hours

    What happens the other 12 hour of the day ? system off?

    With only 2.5 hours of sun, you will need a huge array of PV to collect the power used in 10 hours.
    10 hrs, 1,500Watts/hr = 15,000wh of usage. That would take 7KW of PV to recharge in 2.5 hr, not allowing for any concurrent usage.

    You are at the limit of how fast the battery can be recharged without melting the battery.

    Yikes!!
    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 ,

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