[RE-wrenches] Modified sine deterioration

Drake drake.chamberlin at redwoodalliance.org
Tue May 20 07:24:34 PDT 2014


Hello Wrenches,

We are diagnosing a system with a 20 year old Trace DR 1512 inverter. 
Recently a motor burned out that had been running on the system. I do 
understand that modified sine (modified square) wave inverters are 
hard on motors in general.

My question is, "does the quality of the Mayan Pyramid sine wave 
deteriorate with time as the capacitors dry up, or for any other 
reason?  Would the power quality be expected to have declined on an 
old unit like this?

Thanks,

Drake

Drake Chamberlin
Athens Electric LLC
OH License 44810
CO License 3773
NABCEP Certified Solar PV
740-448-7328
<http://athens-electric.com/>http://athens-electric.com/

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