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|  DSH 374
& n4 j$ a# l2 w4 {7 K, x8 {. ^+ Z
+ g1 d9 t0 A9 x4 ~2 _' j5 u) @ | Normal load conditions0 W3 ^ T* Y- V/ {/ y( M7 g
| 4.11
& ?6 N' L. m; z" { | 60335-2-40(ed.2) & 60335-2-40(ed.3) & 60335-2-40(ed.4)" C& q$ q4 x% O- ]3 n
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: L- N; d: O! N& \' s0 o& Z+ [1 }4 P
Standard: IEC 60335-2-40
! ?4 Y0 V. u; } j6 `Sub clause: 4.11
3 A9 h$ e4 k8 A6 X+ O) D6 f- q3 rSheet n. 374 Page 1 (1)
# O9 w$ ] E2 h E4 {Subject: Normal load conditions
" s; @# Y, n5 ZKey words: - Worst condition - Manufacturer data) K G3 J+ M0 w+ `+ q) D0 H0 P, O
Decision confirmed at CTL 38th meeting
8 Q T# D7 V6 kQuestion:' M) ?: J* g. N B: \
Air conditioners are required to be tested at the worst conditions within the range advised by the manufacturer.3 U* V( S( O0 P0 t1 {
Some laboratories are carrying out extensive testing (up to 50 load tests) to determine the worst condition
: e) _% N& ~ ]1 h8 cwithin the specified environmental range.2 y& _' k5 F4 R |
Is this degree of testing required? Can the manufacturer advise of the conditions that are most likely to produce
+ V6 G! M5 y- d/ p. \. `; T5 p$ Zworst conditions (highest compressor current) and the laboratory carry out verification tests over a small
5 O0 p9 U! x' q1 ~. W# }environment range?
$ y: g! Y4 J- g& rDecision:
& G" |# n6 P. v) X- w: n CManufacturer’s data and advice may be used to ascertain the worst case for loading within the specified$ c: l. O$ K9 C: ]( ]
environmental range. Laboratories must confirm the operating conditions but do not need to conduct extensive
9 \4 |* `9 _' Q# vsurveys over the whole operating range.
5 l) \; G+ v+ q& B& c! Y( h, B5 U6 ]* ?; X1 k
6 X5 V0 o2 n, j+ o; a
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发表于 2012-9-14 13:10
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