- D7 `5 m5 G7 a6 @* pStandard: L7 q ~6 \+ Q$ }IEC 60335-1: 3rd ed. 1991 $ K* s5 M" L( n4 f7 n/ xSub clause: 11.8 1 M T! ]* B/ q3 Y' J5 `. Q) u
Sheet n°: 217 * F6 D5 s5 v2 _' @5 x+ xSubject: heating Key words:9 s0 T( q1 F/ j9 L' F2 l* | O- H
- ambient temperature more than 25 °C - Y# ]# a) a `( A+ h8 |) N- winding temperature# X7 G3 a) b% ?3 H+ f/ B
Decision of: 27th CTL meeting to be reaffirmed at 39th meeting. ' o4 ~7 m* O; A8 I' P; G( k) K6 M8 IQuestion:% ^: F6 B: l- } e( v' J
Which of the following limits is applicable in the case of a motor with a Class H insulated0 B( {' n& |8 N" l% {
winding operating at an ambient temperature more than 25 °C (i.e. 120°C)? # z- a1 m L# {! Y* \# G& g9 d. r- Y1) 140 °C (stated in table 3) + 25 °C = 165 °C # X3 n X8 G! e+ W, T0 Y2) 170 °C (according with IEC 43-1/1983 table 3) 1 q( Y; d' X4 s1 ]5 J3) 180 °C (according with IEC 85/1984, sub-clause 2.1 “thermal classes”)( U: ^* p) |; i; ^8 ?; T) Q0 I
Decision: + X7 `5 L; O: _. F165 °C, as specified in case 1) ( m+ s C5 m1 M4 m3 {( ? ! Y7 u% W4 v- D: e5 |[attach]75958[/attach]% r, ^/ K8 o$ P1 g7 G: k
DSH 217