|
|
Post by mastertech on Apr 9, 2015 20:53:24 GMT -5
Are you saying that your panels are not capable of driving a larger inverter to output more then the current 3kw?
|
|
|
|
Post by Casethecorvetteman on Apr 9, 2015 22:07:54 GMT -5
Casey, looks like your inverter is clipping. Might need to to go to a 4000TL. I might try to use a tree sprayer and get up on a ladder and spray the Windshield Washer version of rain X up there. 4 dollars a gallon. And I am wondering about the Ice Clear product we/You want to use for the glycol replacement from Orison. It is designed for de icing Air plane wings and windows. Hmmm I wonder if it is pre apply or an after the ice is on ? Here is a shot from the best day this year. March 29th. The best my US3000TL was 2.88kWh and the US5000TL was 4.59kWh, Having the added 100VDC the AUS system can handle gives you Casey the extra VDC you can add.  Nashou i was a bit stumped by those figures you posted before there Nash, i was refering to a full day's yield, which has got to be significantly higher than 2.88kW hrs!! |
|
|
|
Post by Casethecorvetteman on Apr 9, 2015 22:20:06 GMT -5
Are you saying that your panels are not capable of driving a larger inverter to output more then the current 3kw? No, im saying they will EASILY drive whatever inverter is on the market in Australia for domestic and rural use, up to the SMA Tri-Power 20,000TL. Im also saying the Queensland government has reduced the maximum inverter size to 3kW, and that was all my operating approval for that location allows. It would be illegal for me to install an inverter with a nominal output exceeding 3000 watts. These limits are in place to reduce the chances of voltage rises on the grid, which occurs due to the lack of day time load and larger night time load on undersized 11kV to 400v/230v transformers with their tappings set higher to provide enough voltage for night time supply. |
|
|
|
Post by Casethecorvetteman on Apr 9, 2015 22:34:43 GMT -5
Essentially, you can install and connect as many panels on an inverter right up to the maximum Voc, which will vary depending on the lowest temps the panels may be expected to operate at.
The Australian version ( and Euro version ) of the SMA 3000TL-21 could take around 14kW peak on the DC side.
|
|
nashou
Unmoderated Off Topic
Tech in Training.....
Posts: 1,239 
|
Post by nashou on Apr 9, 2015 23:41:20 GMT -5
Oh That number was the highest during that day . Sorry
the entire day was 18.11 for the US3000TL
And 27.02 for the US5000TL
Nashou
|
|
|
|
Post by Casethecorvetteman on Apr 10, 2015 1:45:19 GMT -5
Yeah thats what i was after  Its not a bad number for a day's output on that 3000 there, ill have to look at the graph and see start and end times. I get around the 18-20 a day in winter here on a reasonably good day, but i never really go lower than minus 1 or 2 here, no chance of snow. |
|
|
|
Post by mastertech on Apr 10, 2015 15:31:35 GMT -5
Im also saying the Queensland government has reduced the maximum inverter size to 3kW, and that was all my operating approval for that location allows. It would be illegal for me to install an inverter with a nominal output exceeding 3000 watts. These limits are in place to reduce the chances of voltage rises on the grid, which occurs due to the lack of day time load and larger night time load on undersized 11kV to 400v/230v transformers with their tappings set higher to provide enough voltage for night time supply. Do you still receive credit for producing more then you use? |
|
|
|
Post by Casethecorvetteman on Apr 10, 2015 16:19:17 GMT -5
Yep, i get 52 cents per kW hour exported, but new installations here get nothing, there is an export prevention device installed on new approvals.
Back when i installed mine there was a 30kW limit, but i onlt got a 3kW approval at that time, later on the max dropped to 5kW, but the contract term changed from ending 2028 to a period of 3 years from commisioning date.
If id have gone for a higher approval, id have been dropped to 8 cents per unit after 3 years, which wouldntve been a good move, as i retain the 52c til 2028.
I generally get back about $2,000 a year, and my prior power bills were around $450 a quarter, so with current prices im saving about $5,000 a year.
|
|
|
|
Post by Casethecorvetteman on May 18, 2015 2:13:10 GMT -5
Hows this for consistency?  |
|
|
|
Post by mastertech on May 20, 2015 10:20:54 GMT -5
How do you know how much is being used and how much is being exported?
|
|
|
|
Post by Casethecorvetteman on May 21, 2015 5:35:02 GMT -5
I thought i replied to this earlier!!
You can tell by reading the meter outside, it tells both export and import
|
|
nashou
Unmoderated Off Topic
Tech in Training.....
Posts: 1,239
|
Post by nashou on May 22, 2015 14:37:41 GMT -5
I thought i replied to this earlier!! You can tell by reading the meter outside, it tells both export and import Right, and the bill will also show it. But its harder to figure out as you have to do some simple math on my NYSEG bill. On my system also Mac they added a meter like the one outside to keep track of total production. I am at about 9550kwh from inception on Dec 31st( mid day) 2013. Athanasios |
|
|
|
Post by Casethecorvetteman on May 22, 2015 16:22:24 GMT -5
Its very easy on mine, it tells you net figures on each one at the press of a button.
|
|
|
|
Post by Casethecorvetteman on May 22, 2015 16:24:12 GMT -5
I thought i replied to this earlier!! You can tell by reading the meter outside, it tells both export and import Right, and the bill will also show it. But its harder to figure out as you have to do some simple math on my NYSEG bill. On my system also Mac they added a meter like the one outside to keep track of total production. I am at about 9550kwh from inception on Dec 31st( mid day) 2013. Athanasios Why did they need that extra meter at the inverters? They tell you total production on their screen!! |
|
nashou
Unmoderated Off Topic
Tech in Training.....
Posts: 1,239
|
Post by nashou on May 22, 2015 17:41:25 GMT -5
Right, and the bill will also show it. But its harder to figure out as you have to do some simple math on my NYSEG bill. On my system also Mac they added a meter like the one outside to keep track of total production. I am at about 9550kwh from inception on Dec 31st( mid day) 2013. Athanasios Why did they need that extra meter at the inverters? They tell you total production on their screen!! Some stupid NY State regulation. I think it is supposedly to protect the home owner from installers that "rent" the roof tops and instal panels and sell the electricity to the home owner at a discounted rate for use of the roof real estate. Might be wrong tho so not 100% sure. I own the panels so not sure why I need it. It is nice to have a analog record to make sure the SMA's are accurate, or incase there is a system failure where data might be lost. Nashou |
|
Its not a bad number for a day's output on that 3000 there, ill have to look at the graph and see start and end times. I get around the 18-20 a day in winter here on a reasonably good day, but i never really go lower than minus 1 or 2 here, no chance of snow.
