|
|
本帖最后由 Mark.Li 于 2014-6-10 10:23 编辑
0 ?9 ?0 g: I5 h2 ~: b. ]6 t
/ p6 H8 v- l2 ^; ]7 f- O0 B 请教各位下？UL1598 第15.2章节中的异常温升测试怎么理解？特别是15.2.6 求大师们解读下？
) \: d% }7 w& j8 y- J) `2 F: n5 Q* K, {, V8 y) v3 l& j
15.2.3 For ceiling-mounted luminaires, the thermal insulation specified in Clause 19.16 shall be placed
: M, r+ ~* k: g2 G' A+ laround the luminaire in the test box as follows:8 V/ [! M' E" s) a3 l
(a) the initial depth of the thermal insulation shall be 100 mm (4 in) above the bottom of the) h, g) L' ^, _" L( `
test box or 50 mm (2 in) above the lowest glass portion of the test lamp, whichever is higher;: t' s S2 w: H7 d$ o, r
(b) the initial depth of the insulation shall not exceed the height of the lamp compartment; and4 A' X% s3 W$ z7 ]* w8 u1 T, b
(c) if more than one test iteration is required to achieve the results specified in Clause 15.2.7,
* E! R# d/ y5 y. Ban additional 50 mm (2 in) of thermal insulation shall be added for each successive iteration.
* v9 q' d, i5 FThe last increase in thermal insulation may be less than a 50 mm (2 in) increment, to ensure: i' \. T; K6 V. p* F1 L' y
that the maximum 216 mm (8.5 in) height requirement is not exceeded. For each additional
% k: D; k% |2 W) z1 e' Tthermal insulation level, the test shall be restarted with all temperatures at room ambient.
5 g) \8 {- D3 bSEPTEMBER 17, 2008 NMX-J-307/1-ANCE ¨ C22.2 NO. 250.0-08 ¨ UL 1598 1519 m9 o" v T0 t z) z
15.2.4 For recessed wall-mounted luminaires, the thermal insulation specified in Clause 19.16 shall be
% W8 I8 d: t4 v6 a3 A2 v" Rplaced over a recessed luminaire mounted in the test wall so the topmost portion of the luminaire is under
1 a& x" U9 e- u7 k9 ~5 x216 mm (8.5 in) of thermal insulation.
X' Y7 M5 A4 a. _. }15.2.5 The test lamp type and wattage for:
" l# Z K m* u* q(a) an incandescent luminaire shall be as marked on the luminaire and as specified in Clause: v3 o" n; D; P8 Z Z% b; x8 Q! ^
19.8 and Table 19.8.2; and( V% E) I6 l, F& S" @2 a
(b) an HID luminaire shall be as marked on the luminaire and ballast, and as specified in$ S' y! Z7 _) u/ W$ o
Clause 19.8.3 m: Y8 z$ X; O0 S5 q4 ~ H( r" q
15.2.6 A luminaire shall be operated until the thermal protector trips or for a maximum of 7.5 h. If the
# z* K0 A* w/ \protector does not trip within 3 h, the test shall be repeated with an additional 50 mm (2 in) of thermal7 o. u9 }3 | L: ~4 U
insulation, until:9 Y3 z# k+ h5 z5 ?
(a) the thermal protector trips within 3 h; or2 d& O" B6 X; T4 u
(b) the temperature limits in Table 14.1.2 are exceeded; or& X, H* C5 y4 z! X$ F! r* q
(c) the thermal insulation height is 216 mm (8.5 in) above the highest projection of the
" x1 Q2 Q% F' a, W/ G& \% G4 tluminaire, the thermal protector does not operate, and the temperature limits are not exceeded,% L5 I- j: n$ |6 r
in which case the test shall be repeated with the next hotter trim installed.
/ ~( |2 [5 J( D0 p2 M. k15.2.7 Test results shall be acceptable if the thermal protector:# m) R, m) P7 E/ O' N
(a) operates within 3 h and no part of the luminaire in contact with thermal insulation or the test
4 l* N& S( |0 abox exceeds 160 °C; or
' K0 Q3 j4 Y# U(b) does not operate within 3 h and the temperature limits specified in Table 14.1.2 are not
5 d _# C0 [: d& v8 |exceeded during the test. Any part of the luminaire in contact with thermal insulation or the test0 L1 R1 @& X$ c( e' v# i( e
box shall not exceed 90 °C. The test shall be terminated after 7.5 h.
/ E/ Y! F- s( ~7 C' X4 n
0 v5 Q1 F# _# X' F1 C: u# D |
|
|关于安规|小黑屋|安规QQ群|Archiver|手机版|安规网
( 粤ICP13023453-10 )
窥视卡
雷达卡
发表于 2014-6-10 09:58
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
抢沙发
千斤顶
显身卡
楼主