Growatt Spf 5000ES overloads

Lwilliams7417 · Jan 25, 2024

I am having a serious issue with my two growatts. I started having overheating on a transformer 2 months ago and replaced with the Growatt ATS 5000 auto transformer (×2). When in AC bypass they will show 0 watts and over 6k volts! If I'm in sbu I'm fine. If the batteries have to charge on ac,I'm fine. If I run sub it overheats the transformers (both) and the system either has to be shut down manually or I can switch back to battery and it clears the overload and the transformer will cool back down. Anyone know what could cause this??

AntronX · Jan 25, 2024

Lwilliams7417 said:
When in AC bypass they will show 0 watts and over 6k volts!

How are you measuring that?

Lwilliams7417 · Jan 25, 2024

AntronX said:
How are you measuring that?

By the shine app and by the inverter telling me it is using 0% of load capacity. Next time it does it I'll share a screenshot of the app

B-Mod · Jan 25, 2024

We would need to see a diagram of what you have wired up, with out that it is a guess on our end.

timselectric · Jan 25, 2024

Check to make sure that 60 hz is correctly set.
If it's set to 50 hz that could be the problem.
When connected with the grid, it will match the grid.
When running on battery, it will follow the settings.

Lwilliams7417 · Jan 26, 2024

timselectric said:
Check to make sure that 60 hz is correctly set.
If it's set to 50 hz that could be the problem.
When connected with the grid, it will match the grid.
When running on battery, it will follow the settings.

I'm set at 60hz

timselectric · Jan 26, 2024

Lwilliams7417 said:
and over 6k volts!

This must be a typo. lol

Lwilliams7417 · Jan 26, 2024

timselectric said:
This must be a typo. lol

Nope

timselectric · Jan 26, 2024

Lwilliams7417 said:
Nope

Six thousand volts?
No way.
Must be a glitch.

Lwilliams7417 · Jan 26, 2024

timselectric said:
Six thousand volts?
No way.
Must be a glitch.

That is what the inverters are reporting. It's causing massive overheating issues.

timselectric · Jan 26, 2024

Lwilliams7417 said:
That is what the inverters are reporting. It's causing massive overheating issues.

Something is seriously wrong.
Have you checked everything with your own meter?
But be extremely careful. Not many meters can handle that voltage. It will explode in your hands.

Lwilliams7417 · Jan 26, 2024

timselectric said:
Something is seriously wrong.
Have you checked everything with your own meter?
But be extremely careful. Not many meters can handle that voltage. It will explode in your hands.

I have and it went into shutdown as there were too many volts. It got to 600v and shutdown. I'm thinking of disconnecting the transformers and just run the neutral bond instead to see if the transformers are causing the overloads. I have two 5kw transformers wired in now. It goes ac to inverters. Inverters to transformers and then to a distribution box then to load center.

timselectric · Jan 26, 2024

Lwilliams7417 said:
I'm thinking of disconnecting the transformers and just run the neutral bond instead

Don't do that. The transformer creates the neutral.
Without a neutral, your 120v appliances will be damaged.

timselectric · Jan 26, 2024

Lwilliams7417 said:
I have and it went into shutdown as there were too many volts. It got to 600v and shutdown.

If the inverters are putting out 600v, they are damaged. That's over twice the voltage that they are designed to produce.

timselectric · Jan 26, 2024

It's hard to believe that they could be that damaged and still turn on.
Really need to see how everything is wired together.
It sounds like a wiring issue.

Lwilliams7417 · Jan 31, 2024

Mat have finally found the issue. When I did the upgrade of the transformers, I bought a new sub panel to use as a distribution panel. I did not know that the panel had a slight bend in the middle behind the busbar. When a heavy load would come on the panel would flex causing one or both breakers to break contact with the busbar. I corrected the issue yesterday and as of right now I am having no issues. I am going to be moving the whole system to a 10x10 building and replacing the growatt inverters with the new eg4 6000xp. When I do I'll replace the faulty panel with a QO panel and installing every piece of safety equipment I can get my hands on.

Growatt Spf 5000ES overloads

Lwilliams7417

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AntronX

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Lwilliams7417

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timselectric

If I can do it, you can do it.

Lwilliams7417

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timselectric

If I can do it, you can do it.

Lwilliams7417

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timselectric

If I can do it, you can do it.

Lwilliams7417

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timselectric

If I can do it, you can do it.

Lwilliams7417

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timselectric

If I can do it, you can do it.

timselectric

If I can do it, you can do it.

timselectric

If I can do it, you can do it.

Lwilliams7417

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