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|  DSH 374
4 |# u2 o0 ~9 M5 {& g' c; x% Y p+ q/ Z/ u+ B* s
| Normal load conditions
: b1 S! P0 a9 o% K' Y1 |" W& s: Z | 4.11' R7 K/ Q% f, V! s1 m
| 60335-2-40(ed.2) & 60335-2-40(ed.3) & 60335-2-40(ed.4)% R; L' d: J8 t& \4 ?( w
|
- ~. c, j: k' P: j. yStandard: IEC 60335-2-40; W. G9 n( X+ }7 D; D0 m: l, h% p6 S
Sub clause: 4.11" f5 I3 J/ I/ Q$ R
Sheet n. 374 Page 1 (1) S# N. |/ i) \- N- A
Subject: Normal load conditions( J. Z. n8 c# {% P
Key words: - Worst condition - Manufacturer data
4 P$ h* w: l" X. p6 m! fDecision confirmed at CTL 38th meeting* x* B/ e0 c9 U" u4 i% Z* X
Question:# p$ x* m/ ~. G8 m! s8 \
Air conditioners are required to be tested at the worst conditions within the range advised by the manufacturer.3 x8 }* F% a7 N; t% |( h5 Q
Some laboratories are carrying out extensive testing (up to 50 load tests) to determine the worst condition
0 ~' ]! [* Z! A+ A' ywithin the specified environmental range.0 E1 j; i4 J9 h( v/ Z) N- H% @
Is this degree of testing required? Can the manufacturer advise of the conditions that are most likely to produce
# J6 n1 P* A( Dworst conditions (highest compressor current) and the laboratory carry out verification tests over a small: }8 k! b# \, Q& O2 B! `" q2 G
environment range?
$ z5 \9 n6 \% V, h- S2 _: H: `7 JDecision:
0 c. p0 F; y: iManufacturer’s data and advice may be used to ascertain the worst case for loading within the specified
3 K5 R6 o8 S; ]- Nenvironmental range. Laboratories must confirm the operating conditions but do not need to conduct extensive- x) @6 u) ~" K
surveys over the whole operating range.
& r3 d( @+ b1 c* p+ M/ I8 T! X. ^2 l0 {* M) d* W* p
9 f4 W9 k& q4 A# K" z% ] |
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发表于 2012-9-14 13:10
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