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|  DSH 217- d7 W& _% \' [9 a4 G3 }+ V
4 K& S" a" V, L N% _7 d2 E8 [4 @$ O | heating" I4 c& @- x- D* `
| 11.80 }+ X. n* _& n) U+ Z" N/ h! Q, u
| 60335-1(ed.3)9 ~; `5 x5 [6 m9 g+ t& r. m N% Z+ e
|
. }$ Y" `' N' i& T! d5 k$ K
Standard:
+ r% ~8 ` U/ t8 l Z- f; m! |IEC 60335-1: 3rd ed. 1991
/ r$ `4 K2 Z5 ^Sub clause: 11.8
) X; [& b: s+ \5 k+ f4 U' lSheet n°: 217: P0 J9 y8 O) j N; L/ O5 o- |
Subject: heating Key words:9 r' f+ M7 |' @# |
- ambient temperature more than 25 °C
9 a9 F( x) U* Q/ [- winding temperature
7 P6 h2 \+ n. x* c9 Q" a) FDecision of: 27th CTL meeting to be reaffirmed at 39th meeting.
5 W1 v+ y$ `) ]Question:5 \' p; }1 l) K( l: d; ^6 D) J
Which of the following limits is applicable in the case of a motor with a Class H insulated. t% O- t8 ~. {
winding operating at an ambient temperature more than 25 °C (i.e. 120°C)?
, k: p$ J1 t/ r" J2 e; Q* l: M8 u1) 140 °C (stated in table 3) + 25 °C = 165 °C% ~- [& R( }/ N' B8 ~
2) 170 °C (according with IEC 43-1/1983 table 3)
$ I$ s+ A& Y/ m0 w3) 180 °C (according with IEC 85/1984, sub-clause 2.1 “thermal classes”) S5 I) B2 m# O* m
Decision:
: ?# m' y% `3 J0 b) d165 °C, as specified in case 1)
$ B/ R. j. v; W+ N( [2 V" r4 ^
1 ?+ q! u9 ^% Y5 s
4 V0 i! O8 K3 M3 U1 Z |
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