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| DSH 729+ I% w# R2 V7 `8 U* R& I1 r
: d3 b. s C/ |0 b* _; D1 H | Temperature limit of main enclosure over heat sink: y' Q$ a1 t' O
| 7.1.1, Table 3, note b+ p1 L" t3 y, P6 f! T3 a, |( F
| 60065(ed.7)1 E2 |0 K. \5 S, d! i
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8 k9 W: r3 @. Q% n/ \Standard(s)- (incl. year) No. Year
1 q% i( @0 y9 x3 `IEC 60065:2001 DSH
) D4 U3 }& I- g" c( P& C( b& q0729% N' q$ n4 k1 L% n$ |
20082 [% b5 x4 V0 V) v, X3 ^
Category:; ^& i3 n: G8 L' p* y/ A) g3 e- u8 Y
TRON
; Y6 D6 w' R- d e. H8 \2 A3 {Sub-clause(s):& k$ }( |7 Z0 ` q; i; `
7.1.1, Table 3, note b. C" C; Q* D8 u- k& f
Developed by: ETF2; {! X' _# u. i+ B, y
Subject: Temperature limit: Q. ^3 j6 F# G! L
of main enclosure over heat
5 K% A7 q2 _8 L' b# `" d' Msink5 }, e) r2 P; i$ \' B3 n
Key words:
' i! i1 i5 T6 Z- Limits during normal) h; i0 p6 h/ Y9 o# r! X
operation
$ K$ w# ^ N3 @1 b3 B- Not likely to be touched! `5 o, X" W* n6 T, ~: ?2 Q4 i8 g' Y
during intended use8 |' u* L! S p
Decision approved at the- l$ N/ f* g& ?2 F
46th 2009 CTL Plenary+ s8 K) _3 b# Y8 |2 ]
Meeting7 K, t% e K/ | G6 O7 V) t
Question:
" {: C" \& n2 ~ @Can the 65 ° K temperature rise limit be applied for the surface of the main enclosure covering an
: \6 i1 j* G u) hinternal heat sink in the same way as is applied for vacuum tubes following DSH-566?# \4 A- p- P4 a q
Decision:* X! P3 j. | h5 ~2 O
The 65 ° K rise limit may be applied to the enclosure covering an internal heatsink, if:
# ?- |$ b# B6 ], k/ F· the symbol (IEC60417, 5041) is marked on or adjacent to the heated area of the surface of3 G9 J! Q# ~# A9 c4 p
the enclosure, and% j5 O' j i7 Y
· the minimum distance over the surface of the product between this area and any control8 R, d& l" @# j' ^# x" c
intended to be operated during use is 150 mm or greater, and8 t$ J* H, H i
· the instruction manual gives information regarding it.; t9 P! \# r7 w- x& Q) Z. v0 a* H
. ^ L: \' s3 a: F* J! O1 H% s7 @$ y$ {* M: B9 L
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