IEC 60085:2007
Electrical insulation - Thermal evaluation and designation

Standard No.

IEC 60085:2007

Release Date

2007

Published By

International Electrotechnical Commission (IEC)

Latest

IEC 60085:2007

Replace

IEC 112/74/FDIS:2007 IEC 60085:2004 IEC 62114:2001

Scope

This International Standard now distinguishes between thermal classes for electrical insulation systems and electrical insulating materials. It establishes the criteria for evaluating the thermal endurance of either electrical insulating materials (EIM) or electrical insulation systems (EIS). It also establishes the procedure for assigning thermal classes. This standard is applicable where the thermal factor is the dominant ageing factor. NOTE A thermal class is not assigned to an EIM as related to its use in an EIS

IEC 60085:2007 history

• 2007 IEC 60085:2007 Electrical insulation - Thermal evaluation and designation
• 2004 IEC 60085:2004 Electrical insulation - Thermal classification
• 1984 IEC 60085:1984 Thermal evaluation and classification of electrical insulation
• 1970 IEC 60085:1957 Recommendations for the classification of materials for the insulation of electrical machinery and apparatus in relation to their thermal stability in service

IEC 60085:2007 Electrical insulation - Thermal evaluation and designation has been changed from IEC 62114:2001 Electrical Insulation Systems (EIS) - Thermal classification.