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引用第0楼sclongwar于2008-01-04 15:07发表的 标准理解 :
& o& f& I( v8 u在IEC 60335-1 cl 19.7中,
( b4 O+ } H& B7 ?Appliances incorporating motors and having capacitors in the circuit of an auxiliary winding,
' B; |- `8 F" U: g. y+ O s% i, V/ v" |are operated with the rotor locked, the capacitors being open-circuited one at a time. The test
1 S& H! O; m, Y+ K" iis repeated with the capacitors short-circuited one at a time unless they are of class P2 of$ l4 e6 `5 { \5 G2 r& Z8 l& S
IEC 60252-1.8 v# ]4 h* h7 A! X/ P2 q+ U. I
....... " _; r0 b) @, B8 j# M8 K" a" U
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:
# l2 p" ^9 @5 O$ ?7 d1、将电容开路,每次一个,对电机进行堵转测试;
5 ?/ T. k; ~: Y( ~9 [1 _8 T2、将电容短路,每次一个,重复电机的堵转测试。8 v4 R' r9 {( g' ^+ r
PS.当电容是符合IEC 60252-1里面P2级的,第2步可免去。 |
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