According to EN60950-1, table 4B, note 1, a winding temperature measured using "embedded thermocouples" no longer requires the 10ºC differential.
luck, Brian -----Original Message----- From: Peter L. Tarver [ mailto:[email protected]] Sent: Wednesday, June 04, 2003 8:04 AM To: [email protected] Cc: Brian O'Connell Subject: RE: 60950-1 temperatures Brian - In using the older standards, the temperature compensation inequalities are slightly different. In 1.4.12 of the 60950 standards, if Tmax is specified, (T - Tamb) ltet (Tmax - Tmra) or (T) ltet (Tmax - Tmra + Tamb) >From 60950-1, (T) ltet (Tmax + Tamb - Tma). Other than variable naming, it looks the same to me. This ignores the 10ºC differential for using thermocouples. Regards, Peter L. Tarver, PE
