Guru
Joined: 17/10/2017
Location: BelgiumPosts: 469
| Posted: 07:07pm 25 May 2021 |
Wiseguy I missed your reply, thanks for your input, yes those kilovac relais are on my list, although I'm also considering mosfets for this. At the moment there are only breakers between my battery and inverter. I do use a 100R 25W resistor for precharging. There is a schaltbau dc relay between solar panels and mppt controllers, and I've got 2 more recycled but they draw a lot more current compared to those kilovac relais.
I'm also considering an output relay on my inverter, I know the program has a soft start, but I ones read this could cause appliance failure, for instance with fridges. What is your opinion on this? I don't think it would harm those switch mode power supplies. But I'm not sure with others, that's why I wanted to include a relay, perhaps activated around 180V to reduce the inrush current to save the relay contacts. But a soft start seems to be more logic.
Peter, for the first time powering up the nanoinverter, do I need to be careful when doing AC calibration? Can I expect overvoltage on the output or will it be ok?
For the DC current sensor, I'm thinking of using this sensor; (will this be ok?) or do you recommend a uni directional for higher accuracy? ( I could be an opamp offset circuit if it were a problem, or other hack)
LEM