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开关上的0/1标识丝印(模压不算)是需要进行汽油擦拭试验,理由是:
; ~7 q/ a3 k8 E qIEC 61058-1(GB 15092.1), Cl. 8.9中有具体要求:4 r) c- A6 L2 U1 n6 q/ m1 W, l
8.9 The required marking shall be legible and durable.& l8 {3 q. ^. ?7 K3 T1 F
Compliance with the requirements of 8.1 to 8.8 is checked by inspection and G) F0 M- Q: J- P& y7 W
by rubbing the marking by hand as follows:) ^3 c# L$ h4 m6 j% g$ r7 s/ b
a) 15 back-and-forth movements in about 15 s with a piece of cloth soaked
0 |9 w5 m( P$ T. a: uwith distilled water, followed by
3 }. L: h2 j* w1 D, M# `- Gb) 15 back-and-forth movements in about 15 s with a piece of cloth soaked . T' y6 b. D3 u& O; c7 e* z: {
with petroleum spirit.
6 _1 f& L2 S" j+ ?5 LDuring the tests, the soaked piece of cloth shall be pressed on the marking 6 n. z+ A5 c& M8 d7 D% F
with a pressure of about 2 N/cm2.* i- H2 d; U8 T. d( z; h
After these tests, the marking shall still be legible.
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如测试通不过,是不符合标准要求的。 |
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