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|  DSH 374
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- B, N9 A G( A* k$ n, ^ | Normal load conditions
" {/ V7 z4 Y" P0 n* P/ K; u | 4.11 C* n2 g3 [$ f; p
| 60335-2-40(ed.2) & 60335-2-40(ed.3) & 60335-2-40(ed.4)
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( g- M4 |, q: }" G% j2 GStandard: IEC 60335-2-40# D$ V5 W) D) S- `9 W+ Z! z
Sub clause: 4.11
) r$ }, {$ [0 RSheet n. 374 Page 1 (1)
2 U) }2 W# D4 H' |! r4 dSubject: Normal load conditions7 c8 }; s- A' w2 M ^
Key words: - Worst condition - Manufacturer data
% U( U/ P. X% {& @" j5 ZDecision confirmed at CTL 38th meeting
1 M% X! c$ O" _* [) LQuestion:
: V, k. J) c* j$ IAir conditioners are required to be tested at the worst conditions within the range advised by the manufacturer.
) F/ \) f" j# a( y( O7 i/ NSome laboratories are carrying out extensive testing (up to 50 load tests) to determine the worst condition/ w, Z* D' i2 u4 \6 D
within the specified environmental range.
1 Z- |3 R( E4 @4 J9 JIs this degree of testing required? Can the manufacturer advise of the conditions that are most likely to produce7 N- w8 ^( v% Y1 C# q7 b9 l1 U
worst conditions (highest compressor current) and the laboratory carry out verification tests over a small
" U6 \7 s8 E$ r2 r7 h' B/ J2 ~8 oenvironment range?% W P# `. t5 e% C$ e! L
Decision:
6 _: F3 {# B3 c5 R* v9 UManufacturer’s data and advice may be used to ascertain the worst case for loading within the specified
: w, O# H3 t& G4 V8 B/ wenvironmental range. Laboratories must confirm the operating conditions but do not need to conduct extensive
. c) s. `& V/ Y( H# T* msurveys over the whole operating range.: A6 ~, O5 b& E( N
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5 k8 B; H; R2 w9 `& O; f% \. L! G |
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