Discuss SMA Sunny Boy Earth fault / Water penetration in the Solar PV Forum | Solar Panels Forum area at ElectriciansForums.net

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V

VMan

Afternoon all,
Just thought i would share my afternoon with you all.
so i have 2 x SMA Sunnyboy 1200 inveters both situated outside next to each other(IP rated of course), when i noticed an earth fault today.

Following the manual, i tested the string, + to PE and - to PE, both 0 Volts

So went onto page 59 - testing the varisitor inside.

When I started to loosen the lid of the inverter, a shed load of water came out of the inverter!!

The inverter has never been opened before since receiving it from the wholesaler!!

Ended up drying the inside of the inverter and there you have it, earth fault fixed!

Just a heads up for you all.

V.:banghead:
 
Yea it IP65, i opened the second inverter to check that, and no water at all!
 
It's normal for a Sunny Boy 1200 to be opened up somewhere between leaving the factory and being commissioned in order to set the language to English on the DIP switches. Sounds like whoever did it didn't put the lid back properly.
 

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