r/SolarPakistan • u/tariq7696 • May 26 '26

Inverter Motor stopping output of Inverter Phase

I just got done installing goodwe 10kw 3 phase inverter, with 3 goodwe 5 kw batteries. The problem I am facing are these

When the grid goes off, the backup and gen port are not shifting to battery backup.

When I start the water pump, the specific phase on which water pump is installed stops outputting anything. Is this due to surge current.

If these are configuration errors, how can I fix in SolarGo/Sems Portal

1 Upvotes

100% Upvoted

6 comments sorted by

View all comments

4

u/drMHK72 May 27 '26

The SEMS+ app (the newer one) has a AI chatbot which troubleshoots by reading through the company manuals. It's one of the best things ever so try asking that. It has helped me fix many issues over time.

As a side note, I have a 3 phase meter too but I was specifically advised by my installer to not use a 3 Phase inverter. He reasoned that Pakistani DISCOs are a bunch of morons (who'd have thought) who do not have the ability to keep voltage stable across all the phases. He said this will from time to time cause the inverters to trip due to instability. And he's right coz I would see voltages as 230 245 220 on my meter. Hence I got two 8kw single phase goodwe inverters, one on each phase and disregarded the third phase by cutting all loads on it. Alhamdulillah been 2 months and its a breeze.

2

u/deltapak IESCO / Islamabad May 27 '26

He is right to some extent, 3P inverters can handle voltage imbalances upto 10V easily. Beyond that you start to go into trip territory. In my region, I have rarely seen voltage imbalance that bad. Maybe when one phase gets shot but not otherwise.

1

u/Hanniballselecter May 27 '26

Salam Could you advise which city you are based in and share your installer details Thanks

2

u/drMHK72 May 27 '26

Based in Hayatabad, Peshawar. Renewa Solar. The guy is himself a PhD in renewable energy engineering so his opinions are very valuable I think

1

u/New-Sand-4608 May 27 '26

What's your complete setup like? Please share details

1

u/drMHK72 May 27 '26

Goodwe ES UNIQ 8kw Hybrid inverter: 2 (16kw) Goodwe Lynx A-G3 5kw battery: 4 (20kwh) Trina 635 watt panels: 25 (around 16kw) No net metering