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|  DSH 729
) \- c4 ?# M" u; g# s! b, b8 U* G/ v1 }- y3 {) N( e- G! b
| Temperature limit of main enclosure over heat sink
% t5 i' F+ k: B6 Z! r/ H3 l' G8 E | 7.1.1, Table 3, note b
% x4 l- A; ~+ [' T6 i$ e | 60065(ed.7)
) P- I9 E6 i; D& l; P |
& e2 O& i1 @/ v/ d8 S3 tStandard(s)- (incl. year) No. Year
# |3 g* s* t! _2 I- H1 f4 v RIEC 60065:2001 DSH
& o# R/ ~1 o9 T0 v: ~. Q3 \07292 G' g, |, G( m; \
2008
. U1 b9 J) L, V: }' G, t$ BCategory:
7 P; B% V# M! s& v* C) UTRON
2 M2 V1 {! j% a+ `$ F3 ySub-clause(s):; @0 Q5 G* b( p9 K- `9 Y6 Z& ^
7.1.1, Table 3, note b, s: D! x. @7 J S
Developed by: ETF24 T6 v1 k% B/ [: U4 L$ L
Subject: Temperature limit
% i) S, K0 m2 R: B* W4 x& Gof main enclosure over heat5 A; j; S$ n0 S. `7 H
sink
$ ^+ w. ]+ ]9 Z% b% ^1 w0 dKey words:
" k4 R6 e0 h1 S- Limits during normal& i4 o/ {; \2 G- K* t5 y6 S
operation" _: M0 {/ V) x5 G7 V0 G
- Not likely to be touched
5 v5 b( V, o. X: c) Rduring intended use' r% @$ L5 w# }4 Z
Decision approved at the
5 ~3 D+ r% W- v2 O46th 2009 CTL Plenary
- J+ I n2 \. z1 L/ ]Meeting
% r9 |& G i; l6 J6 ~$ s1 k9 pQuestion:; s P: M! y, L. ~0 f6 v- r# g
Can the 65 ° K temperature rise limit be applied for the surface of the main enclosure covering an1 K! u% H9 T7 _1 Q2 F6 J+ _
internal heat sink in the same way as is applied for vacuum tubes following DSH-566?
1 L0 U1 e, \$ P- |/ [6 ZDecision:
3 A0 ^% N H$ t* wThe 65 ° K rise limit may be applied to the enclosure covering an internal heatsink, if:: r* q0 s6 |: O: w H
· the symbol (IEC60417, 5041) is marked on or adjacent to the heated area of the surface of' _1 L, w R/ [6 D; v2 M; L
the enclosure, and
. Y) d( f+ ]4 ^$ I0 E$ \ \· the minimum distance over the surface of the product between this area and any control
) x& L& X" q" n) k2 s, _1 \8 Tintended to be operated during use is 150 mm or greater, and2 n# G" M" w2 s' p
· the instruction manual gives information regarding it.1 B1 X6 e9 [! N, x% e
& C" F, Z! i( E
5 Z" A4 ~! R) v! r$ V3 K' g |
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发表于 2012-11-8 17:01
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