diy solar

diy solar

Mpp solar all in one inverter

Mahendra Gomanie

New Member
Joined
Mar 8, 2021
Messages
250
Location
guyana
Hi all I thought its wise to mention this since it was noticed that several units seems to have these issues.
The Mpp solar inverter 5000w/48vdc/240vac systems has seem to become a safety hazard.
I recently tried to solve issues on a few systems where the. Inverter chassis, ground and neutral line becomes energised. After several checks and reconfiguring grounding the problem still persist as a result I have come to the conclusion that it's a manufacturing defect.
What is weird also is that the system functions normal excepting of course with a live ground and neutral.
A point to note that attempts to connect the ground resulted in sparks and inverter going wonky.
 
So an update on this issue.
A floating DC negative ground seems to be one of the culprit for energised AC output ground and neutral.
Neutral and ground becomes deenergised After DC ground is being rectified.

I am however still puzzled when the ground from the inverter AC output re connected to ac breaker panel the ground becomes energised.

Any thoughts?
 
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