[RE-wrenches] Meggers for1000 volt arrays

[Kirk]

Howie,
If meggering an array, first of all, check with your panel oem to see what voltage they recommend to safely IRT. In a series string, you are effectively meggering at the meter voltage plus the cumulative series string voltage. If the meter is set to 500v, and you are measuring a string which is 500 vdc open circuit, the last panel in the string is meggered at 1000v, the middle panel 750v, etc.

Kirk Herander
VSE
Sent from a job site somewhere 

> On Jul 23, 2015, at 8:18 AM, Howie Michaelson <howie at suncatchervt.com> wrote:
> 
> We are starting to work with 1000 volt arrays.  What different settings
> should we be using for testing insulation on these array?  Anyone have a
> favorite megger for testing these arrays.
> 
> Thanks as always,
> Howie
> -- 
> Howie Michaelson
> NABCEP Certified PV Installation Professional™
> Catamount Solar, LLC
> 
> 
> 
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