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发表于 2010-11-9 13:25
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又有如下问题请教:3 n9 m. `; _2 [4 e* B
1.UL496 Table13中(Threaded ”go“ gauge for E26 medium-screw lampholders ”Not go“ plug gauge for E26 medium-screw lampholders "Go" 和“not Go” 指的是什么?
) A4 W& D. r* H9 w9 E4 S( _, ?5 e4 q! z2 i: a
2.LED球炮灯Marking要参照哪几个标准
0 D* n/ C/ }( l是不是以UL1993为主兼参照UL8750?, y/ |% M/ {: |( P" I* I7 T* F
* K% h, g. Y5 t3 T- m" z/ X' [8 H! f3.功率因数需不需要打在标示上?" q( p) p4 w9 C# s3 X- Y, y' z: W
UL8750 Clause 9.2.2 3 W' P7 E( x8 [% e) J" O
A power source integrated with a controller or LED array or both shall be provided with markings
9 s6 b( u: ^& V' B* z(a) through (c) below. A power source packaged separately from the controller or LED array or both shall5 { v- h- b% z8 d' G2 e) v. ~( h
be provided with markings (a) through (d):
$ @2 ]$ i1 \$ f7 h/ u0 Na) Environmental suitability (dry, damp, or wet location),
+ w& [( W: d2 a5 f( X {5 yb) Input voltage,
/ n' T9 r7 o( ^7 r: ^* nc) Input current and power factor, or input wattage, and) J. u/ T2 c- i8 t0 Z
d) Rated output voltage and current (or wattage).
1 I" i1 U- g- v5 E' Y! X, h& m3 E5 _但UL1993中并没有提及是要打上功率因数的标示。
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) U w" O% y2 _2 Q4."Class 2"和"Class 2 input only"要不要打在标示上?
6 @- `: v) u; G( t' BUL8750 Clause 9.2.3
* G" I/ `3 ?1 JEach output of a power source or controller intended to supply a Class 2 circuit shall comply with+ n: L Z' c' q/ b+ p3 K
7.12 and be marked “Class 2.”
9 M) G$ |2 j' _! L. B) O7 xUL8750 Clause 9.2.53 l: V$ s$ f9 g( ^. w3 A& K. Q+ B6 R
An LED array, module, or package shall be marked with the following:
5 y2 L% M0 a6 y' ]a) Environmental suitability (dry, damp, or wet location),
" W% B, D8 s! \1 ` [! s- E5 Hb) Input limitations (i.e., Class 2 input only), if applicable,
# ~3 M9 h1 e F% ]( y) Cc) Input voltage, and% \9 o% X2 l+ A
d) Rated current or wattage.; U D! i @: H) `! z
但UL1993中并没有提及是要打上"Class 2"和"Class 2 input only"标示。
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! F% ~* t, i5 [7 A5 y3 c4 ]5.最小字高是1.3mm还是1.6mm?. I' @/ C) J9 E e% d. S3 |
UL1993 Clause10.1.5 * _/ d) |' |6 U' F
All markings shall have lettering in which:
; M# d/ x" A1 r# E p4 A3 U2 `a) The precautionary signal word is at least 2.0 mm (0.08 in) high,# N" C$ T. v d5 V2 ~
b) The text is at least 1.3 mm (0.05 in) high and contrasting in color to the background, and5 P+ B) ]5 A3 K' w4 U& Q
c) If molded or stamped in a material, the text is at least 2.0 mm (0.08 in) high, and if not
) i; ^* u7 j& e: T A: n9 L7 c7 Y7 ccontrasting in color, a depth or raised height of at least 0.5 mm (0.02 in).
- M5 u: K3 } n- O1 L- _9 QUL8750 Clause9.1.2
1 @" u! X* @- b8 jA marking shall be legible, with minimum 1.6 mm (0.062 in) lettering and use one or more of the* a' F# O: h4 P+ N) Y& F1 a
following methods: |
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