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|
|  DSH 3746 v# p# U' Z, r ]; g% r
. X3 g4 x# b: r/ F+ J; I
| Normal load conditions3 ?+ R. P: L M) L P
| 4.11
9 g0 \4 W# l2 R# r7 P* f | 60335-2-40(ed.2) & 60335-2-40(ed.3) & 60335-2-40(ed.4)
' o$ D, V9 Z' n& M |
- a6 B- C: K7 Y& o! u3 pStandard: IEC 60335-2-40
W6 ~0 u' f$ XSub clause: 4.11
& @4 q1 O+ \+ a" o; F; k2 g1 WSheet n. 374 Page 1 (1)
. G% G" z& K. RSubject: Normal load conditions
& \' e y, {- Q! n, l* tKey words: - Worst condition - Manufacturer data# Z, j+ J1 n8 l8 g8 J
Decision confirmed at CTL 38th meeting! b5 H f! }1 J; G) n2 t( G: {; r' ?
Question:
" O) i; i7 ~3 c( V F- aAir conditioners are required to be tested at the worst conditions within the range advised by the manufacturer.) t& `1 |% D0 H
Some laboratories are carrying out extensive testing (up to 50 load tests) to determine the worst condition
3 D* ?2 w- {9 uwithin the specified environmental range.
0 ^0 x( S: j% H! b" |Is this degree of testing required? Can the manufacturer advise of the conditions that are most likely to produce
* n9 y, {$ ?0 | vworst conditions (highest compressor current) and the laboratory carry out verification tests over a small
' c. a9 S" [4 G+ t9 f2 |environment range?
- a" \5 r. \: x9 ODecision:
! X( z0 c2 j6 g6 @' T3 hManufacturer’s data and advice may be used to ascertain the worst case for loading within the specified
8 }% a( J o; R; Y2 [ M& oenvironmental range. Laboratories must confirm the operating conditions but do not need to conduct extensive# s$ \; h- n6 a5 w/ M9 b4 B
surveys over the whole operating range.; ?7 H( `2 T8 X; U
4 `2 X/ ~: Z0 C
8 a; [& s: W" i' w0 S4 }' d1 o* ] |
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发表于 2012-9-14 13:10
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