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|  DSH 3741 w6 _4 }& [3 }- J9 D5 C' S- D
0 T: ^- j. ~% Y4 V) K+ G5 [( H
| Normal load conditions
0 \3 i8 ]" N7 Q% D* Q( Q | 4.11! h% x( E( O* }1 d* c" R
| 60335-2-40(ed.2) & 60335-2-40(ed.3) & 60335-2-40(ed.4)& M( x$ |$ {* U9 C4 V' ?
|
' l+ Q# e3 P: p9 F8 i. F
Standard: IEC 60335-2-40
3 Y2 m, H E8 ~# j5 L- P" t+ CSub clause: 4.11
" W2 o4 K, W, G0 e7 J' d. YSheet n. 374 Page 1 (1)
2 S. _9 ] J3 PSubject: Normal load conditions
4 X9 R1 L8 i# K$ E7 F7 zKey words: - Worst condition - Manufacturer data1 V& g/ {# K1 P& J
Decision confirmed at CTL 38th meeting
6 z6 ?; \+ N& y4 j3 B P$ ^! SQuestion:
( G- o6 y! G) N, Z0 YAir conditioners are required to be tested at the worst conditions within the range advised by the manufacturer.
. O5 C" j; _4 ?1 FSome laboratories are carrying out extensive testing (up to 50 load tests) to determine the worst condition
3 x) L9 z$ Q t2 M- @within the specified environmental range.4 G* w, _4 s' O$ N+ H0 ?, x5 o
Is this degree of testing required? Can the manufacturer advise of the conditions that are most likely to produce- }; ^0 X) J9 i" @1 T4 w) c1 d: h+ p
worst conditions (highest compressor current) and the laboratory carry out verification tests over a small
|& M* c {& f% k6 a% genvironment range?9 i/ \, D2 P+ p# r# p
Decision:
1 _, U2 M+ [8 @6 t T9 c( pManufacturer’s data and advice may be used to ascertain the worst case for loading within the specified M$ P& v4 e! a! s4 x- j* q" m
environmental range. Laboratories must confirm the operating conditions but do not need to conduct extensive# Q: }; O- k3 F2 p, B
surveys over the whole operating range.8 d+ Y, n9 S5 \8 L" [8 s( [* Q& ?
% g4 G7 @7 b9 ~. D3 |# R7 _
$ M/ D. g8 W S; h7 ?; Q" @ |
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发表于 2012-9-14 13:10
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