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- X! X8 Z; i2 T L' i+ @- F+ ZStandard:
. I1 R5 d" y8 n/ NIEC 60335-1: 3rd ed. 1991
0 t ?5 ]( p! `7 NSub clause: 11.8 * x' w% g# h4 w3 G1 W
Sheet n°: 217
8 D6 S/ b) b7 R# rSubject: heating Key words:
) @1 {1 A% X- P) L0 e- ambient temperature more than 25 °C
' @& P+ ^8 J+ g0 T% G" T- winding temperature/ S9 K3 Y7 L2 L: E& t
Decision of: 27th CTL meeting to be reaffirmed at 39th meeting.
8 Q9 s9 K6 d2 W/ I+ V. qQuestion:
: X. P, }3 _- S; S) RWhich of the following limits is applicable in the case of a motor with a Class H insulated
, i3 D, U* o0 ^ swinding operating at an ambient temperature more than 25 °C (i.e. 120°C)?
! l8 \& e8 v! T1 D1 e9 l1) 140 °C (stated in table 3) + 25 °C = 165 °C
. F) C p0 M* L8 a/ k: R" f. F" q1 o2) 170 °C (according with IEC 43-1/1983 table 3)! O( M% y* C# H9 u
3) 180 °C (according with IEC 85/1984, sub-clause 2.1 “thermal classes”)6 b6 N% p, { `/ h/ C" D
Decision:7 y8 E: K# C, D' Q2 G
165 °C, as specified in case 1)1 Y# V9 n0 @; L0 {# d1 {
3 o' n! T$ T' [0 l G
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