Bom dia, aqui deixo a troca de emails que tive com a Kaco, referente à limitação da potencia maxima do inversor Kaco 4200:
I'm sending you several days of my Kaco Viso log (ZIP format)
You can notice that the Kaco 4200 inverter is regulating the max output at 3450 w AC.
The Portuguese law limit the production of AC power to 3450 w AC (rated output), but allows the max to go to 3975 w AC (max. output).
In the log, you can see that the inverter is positioning the MPPT (rising the DC voltage) in order to limit the AC output.
Is it possible to you to help me regulating the inverter in order to change de max. output level to 3975 w ?
I'm sending you one link of a fellow solar producer, so you can see what i mean.
http://www.jgduarte.com/stats/grafdia/
I've read the manual and understand all the concepts and have studied all the software parameters. I think the country specification is protected by password. I have enough skils in electrical/software areas to change this parameter without causing problems to the inverter.
My Kaco inverter is : Powador 4200 - INT
and it is registered in your database, for guarantee purpose.
I have 20 x 240w ISF fotovoltaic panels.
Best regards
Obtive a seguinte resposta por parte da Kaco
Good morning,
thank´s for your hint to change the maximum output power.
But I have to disappointed you in two issues:
1. the possible maximum power for this inverter is less than 3975 W.
2. All tests and measurements for certification in portugal were done with 3450W AC. If we change one of the values we have to repeat these tests.
Up to now we will not change the maximum power. I hope that you can understand, that the effort to do this is nott in a positive relation.
At the beginning of next year we launch up a new transformerless family. In this case we can consider the max. Power of 3975 W.
I hope you can understand our position.
Best regards.
Rolf Hofmann
Head of productmanagement
Fon: +49 7132 3818 115
Fax: +49 7132 3818 729
[email protected]
http://www.kaco-newenergy.de
Ainda lhes enviei outro email, referindo que nas especificações do meu Kaco 4200 estava indicado o Max.Output 3800 W, mas nem sequer voltaram a responder.
Sabendo o que sei hoje, apesar do inversor Kaco ser de boa qualidade e não ter consumos nocturnos, não colocaria um Kaco com estas caracteristicas.
De que adianta ter mais potencia do lado DC, se o inversor limita a saida AC a 3450 w nas horas de maior produção?
Os colegas microprodutores que queiram, enviem um email a este Rolf Hofmann, pode ser que juntos, façamos a diferença!
Quem não se entender com o inglês, pode enviar para mim, que traduzo o texto.
Alguem sabe que é o representante/importador da Kaco em Portugal?
Abraços e muito Sol (com inversor que o possa aproveitar!)