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又有如下问题请教:1 a( J' |* s9 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?
) S% r: ?9 k5 C2 T: s6 j- R$ N9 ]" s$ y+ R# ?: X+ Q4 s7 M& H1 S; F! `
2.LED球炮灯Marking要参照哪几个标准
( P3 S7 z4 d* E2 y是不是以UL1993为主兼参照UL8750?0 W I* t: I E l
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3.功率因数需不需要打在标示上?% ?; I. K: t9 K+ E
UL8750 Clause 9.2.2
1 L; M, N+ t5 _; ^7 t MA power source integrated with a controller or LED array or both shall be provided with markings
7 b; t4 }3 m5 Q' @. Q0 M' w" m+ T(a) through (c) below. A power source packaged separately from the controller or LED array or both shall
: M7 C. X) Z! V# W, u, j4 n' ^be provided with markings (a) through (d):
- V& e) @) J# m7 E5 N( |- wa) Environmental suitability (dry, damp, or wet location),6 z5 g% m3 V( W" G
b) Input voltage,
2 b+ o$ h. L3 g. A: F4 Yc) Input current and power factor, or input wattage, and
1 I! |# X# x7 G: Y2 L% ]d) Rated output voltage and current (or wattage).
; I7 m S# P. h* [但UL1993中并没有提及是要打上功率因数的标示。/ S% V% V! k3 K" G2 Q
" H; l( @0 b+ s( Q0 l/ `( M4."Class 2"和"Class 2 input only"要不要打在标示上?$ i8 V# n; ~* N* e* t
UL8750 Clause 9.2.3
1 m1 Y; y" T& S1 k) P8 D4 o7 R1 E; \Each output of a power source or controller intended to supply a Class 2 circuit shall comply with3 I! E c% @ E7 _9 O
7.12 and be marked “Class 2.”
6 S( Y# l" ?% q- P9 n2 a5 oUL8750 Clause 9.2.5+ [0 B4 @/ ~/ t$ e
An LED array, module, or package shall be marked with the following:
3 _5 u: F5 N8 H8 ma) Environmental suitability (dry, damp, or wet location),
$ W% R5 t3 R9 `. nb) Input limitations (i.e., Class 2 input only), if applicable,+ V2 j5 L" c3 {& T" ^
c) Input voltage, and
3 ~# c6 J5 m" b t$ T: M. Ud) Rated current or wattage.1 Z9 b, j" ]' b8 {* R
但UL1993中并没有提及是要打上"Class 2"和"Class 2 input only"标示。# Q* m( T: A3 H- X! o) C$ a- L6 n5 r2 p
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5.最小字高是1.3mm还是1.6mm?
5 W- d9 c1 V7 {1 C, T: A0 k9 BUL1993 Clause10.1.5 ( B7 u; X1 D% b
All markings shall have lettering in which:! ^ O" R5 i& w1 B0 ?1 k; {4 ?% O
a) The precautionary signal word is at least 2.0 mm (0.08 in) high,( K. V V& q+ S8 w2 K, {
b) The text is at least 1.3 mm (0.05 in) high and contrasting in color to the background, and& M& ]; ^- g& A) x( f$ A
c) If molded or stamped in a material, the text is at least 2.0 mm (0.08 in) high, and if not
% N; c/ `) x* M. _contrasting in color, a depth or raised height of at least 0.5 mm (0.02 in).! ?& b. Y8 }# D7 V0 J0 y+ r) E
UL8750 Clause9.1.2
; x% V4 v; e5 j' T/ EA marking shall be legible, with minimum 1.6 mm (0.062 in) lettering and use one or more of the" P" Z& ^* l A' }" t
following methods: |
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