CT coil behaviour
I've been in contact with support for quite sometime now after firmware upgrade 3 Mar. After this upgrade the inverter seems to do something which disconnects the grid side (non essential) load. CT coil values showed positive on display. Just before disconnecting the value turns negative.
Today I've have been advised that CT coil arrow should point towards grid where manual indicates it should point toward inverter.
Which I did and system flow was weird. It then indicated power been pulled from grid ignoring solar input (plenty sun) and battery. At this stage 20A was pulled from grid. The CT value in matrix display now showed negative 2558w under grid. This does not make sense at all.
So I then switched wires between 3 and 4 on CT coil connection in inverter. (essentially setting CT coil back to previous state I suppose). All values and system flow then returned to normal but again, every now and then power seems to be pushed back (CT coil value switched to negative) and non essential load gets disconnected for 1.5 minutes and switches back on. Sounding like prepaid meter might be tripping. Zeroexport power is set to 50W.
Never had this issue with firmware e405/mcu 2130.
Any ideas or similar experience by anyone?
Setup:
5kW inverter
3x 100Ah battery packs
15 solar panels, 7+8.
Grid tied
Thanks
Meinhard
Hi Keith, surely if you discovered that the manual is incorrect, then you would update the manual accordingly. I downloaded the manual towards the end of last year, and it still had not been updated. This error is causing a lot of misunderstanding for a lot of users, and I think there should be a massive campaign to make everyone aware of this. Sending emails to all your users for example... rather than the updates about who has joined the team.