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引用第0楼sclongwar于2008-01-04 15:07发表的 标准理解 :
& y* ?4 D$ c5 B在IEC 60335-1 cl 19.7中,
" C) i: a' k( J9 W! ?# y0 OAppliances incorporating motors and having capacitors in the circuit of an auxiliary winding,* w/ M& n; `) i8 a, h! L
are operated with the rotor locked, the capacitors being open-circuited one at a time. The test
0 F0 V* \4 `9 H1 k5 ]: L9 V. |is repeated with the capacitors short-circuited one at a time unless they are of class P2 of Y8 M9 z. m% @! y
IEC 60252-1.2 ?6 B8 Z) [: A2 {
....... ) K( y- v* F. C
电器带有电机,而且在电机的辅助绕组里面有电容的,测试时:
~- U& n2 B) n1、将电容开路,每次一个,对电机进行堵转测试;
1 u& b, G# a2 r9 {2、将电容短路,每次一个,重复电机的堵转测试。
$ L) H) d; l8 X9 B3 h# ePS.当电容是符合IEC 60252-1里面P2级的,第2步可免去。 |
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