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|  DSH 374
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| Normal load conditions: ? d R; W B6 N4 l. M& R4 s
| 4.11
7 w3 X$ {7 a$ g. f+ A/ F | 60335-2-40(ed.2) & 60335-2-40(ed.3) & 60335-2-40(ed.4) P1 v# E( Z5 R% M _% J
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! {- a, g3 u% \Standard: IEC 60335-2-40
1 L. N+ r. U kSub clause: 4.11( o) v( t& D/ s: ~4 t
Sheet n. 374 Page 1 (1)6 j T+ g& c% i8 R8 q0 P
Subject: Normal load conditions
. G% ^* ^" |5 k3 M! yKey words: - Worst condition - Manufacturer data
9 X J( k9 K2 }6 t& |$ [9 w7 eDecision confirmed at CTL 38th meeting
; r. n% v4 n2 G/ v1 x9 AQuestion:
. N) u: w# F8 t+ J, L& y# q) pAir conditioners are required to be tested at the worst conditions within the range advised by the manufacturer.
3 v- n2 ` L8 t$ d/ n5 hSome laboratories are carrying out extensive testing (up to 50 load tests) to determine the worst condition' X$ l; C' F: D B
within the specified environmental range.
0 I) b" s: c5 g# BIs this degree of testing required? Can the manufacturer advise of the conditions that are most likely to produce- n+ _' e1 P0 v
worst conditions (highest compressor current) and the laboratory carry out verification tests over a small
3 @, Q4 T2 z/ ` T4 _: yenvironment range?
8 S8 U. b* p4 |% A, x2 i- N+ pDecision:0 W3 U: J* x9 b$ C" B+ k
Manufacturer’s data and advice may be used to ascertain the worst case for loading within the specified: q8 R4 [! Q9 e [3 L, a
environmental range. Laboratories must confirm the operating conditions but do not need to conduct extensive! S- ^/ V+ T" D8 S
surveys over the whole operating range.
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