Drake,
I have never heard of this. An oscilloscope would quickly answer that question for you. Please share what you learn.
Allan

Allan Sindelar
al...@sindelarsolar.com
NABCEP Certified PV Installation Professional
NABCEP Certified Technical Sales Professional
New Mexico EE98J Journeyman Electrician
Founder (Retired), Positive Energy, Inc.
505 780-2738 cell

 

On 5/20/2014 8:24 AM, Drake wrote:
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/



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