Matt,
They claim to use a bi-polar array with 600Vdc per pole. All bipolar arrays must be grounded, so they must be grounded. They claim to be grounded through the ac service transformer while operating. They are fundamentally similar to many ungrounded designs. So, it IS grounded during operation every time the transistor closes, which is very fast, so they don't spend much time ungrounded during operation-maybe never because they are operating on 3 phases. The neutrals would have to be white. Bill. From: [email protected] [mailto:[email protected]] On Behalf Of Matt Lafferty Sent: Monday, May 03, 2010 1:28 PM To: RE Wrenches Subject: [RE-wrenches] AEI Solaron Inverters - DC Grounded or Ungrounded Wrenches, Can anyone DEFINITIVELY tell me whether the DC systems on AEI Solaron based plants is grounded or ungrounded during operation? Have you tested your theory in the field? What marking requirements do you suggest for the neutrals? Thanks! Matt Lafferty
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