发表于:2004-01-06 09:40:00
9楼
说ACS600的故障率高,是毫无根据的,给份资料给你看看。下面说的是ACS600系列的平均无故障时间。
The current MTBF values for the ACS 600 product family are:
ACS 601 49.5 years, 167008 delivered units
ACS 604/7 27.1 years, 41004 delivered units
ACS 607 XXT 17.6 years, 488 delivered units
The ACS 600 Mean Time Between Failure, MTBF, in operation calculations are based
on the total population of installed units and failures that have occurred in normal
operation. All failures during shipping or commissioning are excluded from the
calculations. The values are updated quarterly. Weibull distribution has been used as the
mathematical reliability model in the calculations which is common practice in field quality
analysis.