designing power pack for telecom

System

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

niel

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.

mike95490

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!!