|
如果从标准61558 字面意思来看,
) h9 [9 n0 a$ U6 Q- e+ c ?19.17 Transformers having a protection index from IPX1 up to and including IPX6 shall; L3 Y8 q. Y" o1 D* a
have an effective drain hole at least 5 mm in diameter or 20 mm2 in area, with a width of at
+ O' Q0 B9 A% [' w Qleast 3 mm.8 a: c2 R! h( s# v3 B8 J, U
The drain hole is not required if the transformer, including its windings and core and all
' B9 o& X& v: b1 c4 G4 |uninsulated live parts, are completely embedded in an appropriate potting material.6 h+ f% R B, \; e( V3 U# s
1 x( ~' u- O2 U$ r o最后一段,线圈、铁心 和所有没绝缘的带电体,都要完整地覆盖 |
|