Hi,
I have the following problem with my Growatt SPF 6000 DVM-MPV inverter, which is configured fully off-grid (no AC input except a backup generator).
It pulls its power from a 48V 16S EVE 280K pack running a JK BMS. It's been running fine for ~2 years.
But recently, it started acting weird :
- It's setup to deliver 208V split phase ( I live in Japan), that's 104V per phase
- Sometimes (I think the occurences are correlated with me running a rather dodgy AC window unit, which draws about 1.1kw. The problem begins after 1~2h of operation), the ouput voltage from the inverter goes all the way to ~120V per phase, at which point my main breaker board trips.
- Left alone, the inverter will gradually come back to 108V. It takes a couple of hours
During the whole time, the inverter thinks it outputs 208V as usual (see attached picture, taken at night so no panels are visible), but the actual voltage is way more than that (confirmed with 2 different meters). On the battery side, the JK BMS doesn't report anything suspicious.
Note:
- I still run an older firmware, and I'm a bit reluctant to update, even though I am also experiencing the 'invisible panels' issue as described in other threads.
- Nothing is grounded... it's partly the way it's done in Japan and partly me being lazy
Anybody else has experienced this ?
I have the following problem with my Growatt SPF 6000 DVM-MPV inverter, which is configured fully off-grid (no AC input except a backup generator).
It pulls its power from a 48V 16S EVE 280K pack running a JK BMS. It's been running fine for ~2 years.
But recently, it started acting weird :
- It's setup to deliver 208V split phase ( I live in Japan), that's 104V per phase
- Sometimes (I think the occurences are correlated with me running a rather dodgy AC window unit, which draws about 1.1kw. The problem begins after 1~2h of operation), the ouput voltage from the inverter goes all the way to ~120V per phase, at which point my main breaker board trips.
- Left alone, the inverter will gradually come back to 108V. It takes a couple of hours
During the whole time, the inverter thinks it outputs 208V as usual (see attached picture, taken at night so no panels are visible), but the actual voltage is way more than that (confirmed with 2 different meters). On the battery side, the JK BMS doesn't report anything suspicious.
Note:
- I still run an older firmware, and I'm a bit reluctant to update, even though I am also experiencing the 'invisible panels' issue as described in other threads.
- Nothing is grounded... it's partly the way it's done in Japan and partly me being lazy
Anybody else has experienced this ?
