Yonatan Yonatan's posts

Posted by Yonatan Yonatan on Feb 9, 2015 07:18 am

#1 -  Renewable Energy > Technical Discussion: Solar Electric System - Photovoltaic > strange phenomena is PV output
I have 16 sunpower 318 panels connected to sma smc5000a (inTL) inverter (2 strings of 8 panels each).
Each panel has also Tigo optimizer. Tree weeks ago, my inverter started issuing "MPP/insulation warning messages", and the red light (ground fault indication) was turned on. At the same time exactly, I strated to witness a decrease in the output of the system - a strange phenomena could be seen in the Tigo monitoring:
In both strings, roughly speaking, the last panels are producing significantly smaller output then the first panels.
Yesterday, the positive grounding kit of the inverter was replaced, and indeed the red light is off, and no more warning messages are issued by the inverter.
However, the output of the system, as shown by the Tigo monitoring, shows exactly the same strange phenomena. Needless to say - the phenomena is seen in completely unshaded conditions for all panels.
Does anyone has any idea what happend in my system?

Disclaimer and Disclosure

The Alternative Energy Store, Inc reserves the right, within its sole discretion, to refuse or delete any posting or portion thereof, or terminate or block the access to this forum.

The opinions and statements posted on this forum are the opinions and statements of the person posting same, and do not constitute the opinion or act of the Alternative Energy Store, Inc (AltE). The Alternative Energy Store, Inc does not endorse or subscribe to any particular posting. No posting shall be construed as the act or opinion of the Alternative Energy Store, Inc.

Click here for BBB Business Review

McAfee SECURE sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams
Desktop Website | Mobile Website


Click on an icon to share! If you don't see the method you want, hover over the orange "+".


What can we do to help you?

Please enter a summary
Sorry, the copyright must be in the template.
Please notify this forum's administrator that this site is using an ILLEGAL copy of SMF!
Copyright removed!!