. j' [6 G/ j% x. e; tStandard:5 _: [" R9 ^* j) O
IEC 60335-1: 3rd ed. 1991: V# Q* d& v& U1 y" F
Sub clause: 11.8 , b6 Z- ] p6 c$ Y# M' ]$ ISheet n°: 217 $ _2 X2 [2 p2 b3 Z0 D1 B) X9 wSubject: heating Key words:6 ^( E: N `7 [& k- i' m
- ambient temperature more than 25 °C o) ], k X" V) w+ B* |- winding temperature + y j! M6 w W/ V/ wDecision of: 27th CTL meeting to be reaffirmed at 39th meeting. 3 K) X+ {, x& h; kQuestion: - {/ \# J7 _* E: cWhich of the following limits is applicable in the case of a motor with a Class H insulated : y* K' {' j Pwinding operating at an ambient temperature more than 25 °C (i.e. 120°C)?& b) ]0 A; [5 j7 |) @" E) s1 r m
1) 140 °C (stated in table 3) + 25 °C = 165 °C ' f6 `$ y8 E5 I1 J# f7 j5 E2) 170 °C (according with IEC 43-1/1983 table 3) 3 L% v3 c+ O% k/ W6 T" k; z3) 180 °C (according with IEC 85/1984, sub-clause 2.1 “thermal classes”)" Z) e) U: w8 e
Decision: . i$ H0 y" D, V2 r$ A! W165 °C, as specified in case 1) $ N z& ?2 {2 B8 ~* M) M' }6 u1 h$ o1 D- _& ?. Q+ t& F
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DSH 2175 s/ x0 u! }" h( M