DSH 374 Normal load conditions

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小型摆管淋雨试验机

IPX5X6X7喷水试验机

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IEC60335试验指甲

DSH 374 / }2 ^4 `$ n2 p' N3 s

Normal load conditions ' @2 I+ s# b& B2 f3 G' \. D

4.11 1 X/ O; ~  |7 p# m

60335-2-40(ed.2) & 60335-2-40(ed.3) & 60335-2-40(ed.4) ; W$ D$ h3 L8 B6 |4 h. }5 T+ z

7 g( R! _7 Q: w. e) o% B- TStandard: IEC 60335-2-40
Sub clause: 4.11
+ V3 ]! k9 s0 c- uSheet n. 374 Page 1 (1)
Subject: Normal load conditions
' d9 i; k. R# j* M: F$ AKey words: - Worst condition   - Manufacturer data
; v0 ^3 S/ E( F  IDecision confirmed at CTL 38th meeting
Question:
: R) }5 i8 J& F  h! O6 EAir conditioners are required to be tested at the worst conditions within the range advised by the manufacturer.
+ n  x9 r9 R8 h) i; g& d5 kSome laboratories are carrying out extensive testing (up to 50 load tests) to determine the worst condition
within the specified environmental range.
Is this degree of testing required? Can the manufacturer advise of the conditions that are most likely to produce
worst conditions (highest compressor current) and the laboratory carry out verification tests over a small
environment range?
  h" K! u6 [- E9 ?, h$ wDecision:
Manufacturer’s data and advice may be used to ascertain the worst case for loading within the specified
9 H. w# ~) q3 ]environmental range. Laboratories must confirm the operating conditions but do not need to conduct extensive
: |" c; t% d: ]' e6 O( i3 jsurveys over the whole operating range.
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