The article in this month's Home Power Magazine titled Utility-Intertie Inverter Comparison (page 46) confirms my experience with the ST2500 - late starts after sunrise, inexplicable shutdowns during full sun and unacceptable shutdowns during widely scattered cloudiness. These deficiencies add up to at least a 20% reduction is overall output.
I currently run two such inverters splitting the output of my 4,200 watt array. These inverters were scheduled to be replaced by the STXR2500, but after reading the article I'll have my solar engineer investigate whether the SB2500U might be a better investment.
My current inverters replaced a 150 pound Trace intertie inverter that was a bear to wrestle off the wall and send out for repair. Yet, it performed well, generating power right after sunrise unlike the current models which sometimes wait until 9 a.m. to 'wake-up.'
I'm all for buying American but Xantrex did not 'wake-up' early enough to the obvious shortcomings of their product.
Peformance (efficiency and reliability) is paramount when someone is investing thousands of dollars in an inverter.
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[ September 05, 2002: Message edited by: William Lord ]
[ September 05, 2002: Message edited by: William Lord ]
[ September 05, 2002: Message edited by: William Lord ]
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