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|  PDSH 973
( [8 a$ k2 p' S, F3 K7 p( C. }! z1 B/ f) `( K; P0 p9 ~+ Q) i" O% r0 I6 G+ A
| Flux measurement tolerances
9 G' r9 ?! a1 i+ m% ^. L | 22.167 ~% x3 G+ g2 G B {& ]
| 60598-2-22(ed.3);am1;am2
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5 `. j; ?- Z. v! [) E5 F' l0 VStandard(s):
$ Q" Y6 u) u2 f2 b: aIEC 60598-2-22/1997 A1/2002 A2/2008
2 Y, y$ X' C" ]7 }+ @Subclause(s): 22.16
6 y( F, H7 @3 O, pNo. Year PDSH 0973 2010
5 M& ?2 G+ E% f+ \: y' XCategory: LITE Developed by: ETF5 OSM/LUM
! g8 S" I( F' C: }( gSubject:: u+ l3 R! i& P R1 Z1 Z0 Y8 ?! P
Flux measurement tolerances" V; d* K1 o y( _* l7 @
Key words:
: v" s8 p& v' W) u, D2 i$ M' F- Follow up tests+ g8 n: @9 f2 E1 A- A% x% e% b
- 10% difference+ d, S" C, \+ K
- Type tests/ V0 \4 f0 ?7 H4 S3 V
To be approved at the 49th CTL Plenary Meeting, in 2012
/ b: |5 p& I& K _! wQuestion:
0 T) C% ?5 Y) _0 L- H! _When photometric testing is performed to verify the rated flux in emergency mode, we are often faced
/ }. i/ h+ p) Y- `with differences between our results and those stated by the manufacturer. According to our experiences,- c$ g; ~- b7 Z) f: X1 V
this is quite normal if we take into account the series of uncertainties which affect a photometric
D1 m5 B7 m7 ]3 Q }measurement: different lamps used by Test Houses and manufacturers, production tolerances as regards( R `: S) H. c* x) X; o
battery and inverter, different testing methodologies, etc. What is the maximum difference allowed so that
" n2 x& b+ P& q; ]7 r! P9 N0 Vthe value declared by the manufacturer is deemed correct?
- J6 X- b1 U9 { _; rDecision:& G; c R1 I/ M {. P
For follow up test, 10% difference is acceptable. For type tests, no tolerance allowed.3 q7 d/ e; e+ t. _) N
; z" T7 b4 K- D: N
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发表于 2012-9-16 12:51
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