Title :
Precision ovens for thermal endurance evaluation of electrical insulating material
Author :
Steinhaus, Rudolf R.
Author_Institution :
BASF Lacke & Farben AG, Hamburg, Germany
Abstract :
It is shown how a commercially available oven can be easily modified by means of an iso-box to arrive at a temperature variation of ± 1 K for thermal endurance evaluations. The modified oven meets all requirements as, for instance, given in IEC 216-4-1 or DIN 50 011, Part 12 with respect to construction and air flow. The temperature fluctuation in particular does not exceed ± 0,5 K and a temperature gradient inside the iso-box may be neglected. It is also shown that, in case of twisted pairs, the uncertainty of measurement of the temperature that corresponds to the temperature index can be reduced to ± 4 K
Keywords :
insulation testing; DIN 50 011, Part 12; IEC 216-4-1; ageing; breakdown; iso-box; measurement uncertainty; precision ovens; standards; temperature gradient; temperature index; temperature variation; testing; thermal endurance evaluation of electrical insulating material; twisted pairs; Aging; Costs; Dielectrics and electrical insulation; IEC standards; Manufacturing; Ovens; Radio access networks; Solids; Temperature distribution; Testing;
Conference_Titel :
Electrical Electronics Insulation Conference and Electrical Manufacturing & Coil Winding Conference, 1993. Proceedings., Chicago '93 EEIC/ICWA Exposition
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-0847-6
DOI :
10.1109/EEIC.1993.631301
