) A5 ?% F( j% V+ h d谢谢!作者: lxm850215 时间: 2011-6-8 14:49
没有啊作者: ivyy 时间: 2011-6-9 10:10
没有人知道么? 作者: ivyy 时间: 2011-6-9 10:14
再具体点吧1 H* F2 U6 d4 Y
4 y6 I: x+ o! j3 E
就是测试在烤箱中放30天, 那最后的温度标准上说: " w7 A2 F% Z4 a- V2 ~0 {0 [1 W & T# |% {3 I1 {7 a$ S% r6 dThe permissible difference between the actual temperature of the hottest wiinding of any of the ballasts under test and the thereoretical value shall be such that the final test period is at least equal to, but not more than twice, the foreseen test period.0 J- ^# v0 l8 L% A
