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4 A# u1 `* @7 X Z7 `8 T( O# A+ I7 k! h' H
| Humidity test requirements3 o" k5 @4 u3 |% X# o: [
| Various6 L, w$ ~% Y' Z- B
| 60335-1(ed.4);am1;am2 & 61010-1(ed.2) & 60601-1(ed.3) & 60950-1(ed.2) & 60065(ed.7);am1
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4 ] \! p; N9 I* G7 wStandard(s): IEC 60065/2001, Y* A. p' J7 U& U: X& J! R+ L
A1/2005! Q: G( V* H* `( ?( N* N) p3 J
IEC 60950-1/2005" }4 a8 A; w( o4 @+ D, O
IEC 60601-1/2005
6 Z5 t; \- M9 y7 ~, Y. V- PIEC 61010-1/20016 e p, D3 k/ Y \% Y& g5 F4 a
IEC 60335-1/2001 N+ w- \5 ?, ^7 }; M$ H$ z# W
A1/2004
. K7 C1 P; W, X, KA2/2006& W# J: Y+ i* R
Sub clause(s): Various2 v/ ~# G) ]0 u6 g6 g
Sheet N°: 624/07; `% L: d! F! @0 q9 V
CTL-WG4# X# X, W5 i' C$ a1 h
Page: 1(1)
9 H+ k* Q. m% }; O8 fSubject(s): Humidity test) R' u# y# B8 n# g0 [0 z
requirements
; U' ~7 I2 x# B* sKey words:1 @1 i' v" |* f+ g5 b5 V
- 93% RH4 g& B9 m% f" i/ A- A7 d% }3 M
- +/-3% RH tolerance' y' q# n$ ^: @/ ^2 M }, |) u# e
- 20 – 30°C2 W7 U" ^# F& n
Meeting:
) a; t9 W: @8 s0 KDecision confirmed
' ~6 n6 k2 ^6 G6 Xat 45th CTL meeting+ Y" o5 K F6 D3 M/ K: T5 i# ]3 G: |
Question: Various IEC standards have requirements for humidity/temperature$ k, l" Q* P& ]
conditioning, but have different specifications for the test conditions.
4 p: Z4 ]$ T% D: h$ G$ ?3 d' TIEC 60065 – 93 +2%/-3% (t 30°C +0/-2°C)
+ r2 e$ j3 m8 {& k/ zIEC 60950-1 – 91% - 95% (t 20-30°C +/-1°C)( n" _' ]$ r- A) y2 S
IEC 60601-1 – 93 + 3%/-3% (t 20-30°C): l3 ?$ x8 l( E$ l/ U. B0 G% P& `% M
IEC 61010-1 – 92,5 + 2,5%/-2,5% (t 40°C +/- 2°C)
7 H* _+ b3 S" m u+ F0 |$ S, tIEC 60335-1 – 93 + 3%/- 3% (t 20-30°C +/-1°C)( w; F% J+ k$ w, ^' F$ Z) p
There does not seem to be a technical justification for the differences in the* T' Z5 h, i" b2 J3 a
specifications.
, {4 }& D/ @1 q0 o4 s3 k F# k: @Accordingly, it is suggested and recommended that the humidity/temperature" d) ^ s5 D& }: S8 p* x7 j( N
specifications in the above standards be consistent. R# r( \% `% R# s
Decision: The chamber is to be set at 93% RH, with +/-3% RH tolerance, at a convenient
+ S7 U: M% s8 r! l; {temperature between 20°C and 30°C, but the chosen temperature to be kept3 z$ X# _$ I2 z& y! l( w" a, F7 \* n3 E
within +/- 2°C during the test.
8 w% {. A( q1 q% H/ I" \The standard specifications for the humidity are to be met at the
" [) H* O. B0 ^reference/measuring point, where the controlling humidity sensor is located.9 K. G0 c; _, n' h
The tolerances permitted in CTL DSH 251A (+/-6% RH) are allowed in other
5 P/ ?$ @- K: R @* ^parts of the humidity chamber, away from the reference point./ \$ @8 n1 @( r6 a7 @, ]
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发表于 2012-9-19 15:25
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