micro, cdd - Power-One
micro, cdd - Power-One
micro, cdd - Power-One
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Reliability Tests: Life Test<br />
The life test is designed to demonstrate the MTBF evaluation. Every time the test<br />
is stopped to change parameter, components etc. you have to start from the<br />
beginning.<br />
• 55 inverters and 3 CDDs<br />
• Connected to 59.2Vdc (Vmp = 51.5Vdc), Imp = 6.2A<br />
• AC out put 230VAC, 50Hz grid<br />
• Constant 55°C ambient temperature<br />
• All inverters producing maximum continuous output power<br />
No failures recorded<br />
Date<br />
Number of DUT<br />
Hours worked<br />
(Each DUT)<br />
MTBF<br />
Demonstrated<br />
(hours)<br />
Total On/Off cycles Number of failure<br />
Life Test Status<br />
19/09/2012 - 19/10/2012 18 456:00:00 101267 456 0 20.50%<br />
22/10/2012 - 04/11/2012 55 278:16:49 289908 278 0 59.00%<br />
04/11/2012 - 15/11/2012 55 264:00:00 469050 542 0 95.00%<br />
15/11/2012 - 22/11/2012 55 175:27:05 587799 717 0 119.09%<br />
22/11/2012 - 28/11/2012 55 142:24:09 687548 860 0 138.75%
Change language