BS EN IEC 62631-3-4:2019

What is BS EN IEC 62631-3-4- Dielectric and resistive properties of solid insulating materials about?  

BS EN IEC 62631 is an international standard that discusses dielectric and resistive properties of solid insulating materials. 

BS EN IEC 62631-3-4 covers the procedures for the determination of insulation resistance and volume resistivity of insulating materials by applying DC-voltage and temperatures up to 800 °C. The typical application materials include high-temperature mica plates and alumina ceramics. 

Who is BS EN IEC 62631-3-4- Dielectric and resistive properties of solid insulating materials for?  

BS EN IEC 62631-3-4 on dielectric and resistive properties is relevant to: 

• Manufacturers of insulating materials 
• Manufacturers of high temperature mica plate and alumina ceramics 
• Manufacturers of electrical applications 
• Quality testing personnel 
• Product design engineers 
• Electrical engineers 

Why should you use BS EN IEC 62631-3-4- Dielectric and resistive properties of solid insulating materials?  

Some types of insulating materials are used under high temperatures up to 800 °C, such as mica plate and alumina ceramics, when mica plate is used for supporting aluminum electrolytic tank and alumina ceramics are used for high temperature crucibles or resistance 

furnace tubes. For these purposes, it is generally desirable to have the insulation resistance as high as possible. Volume resistance and volume resistivity can be used as an aid in the choice of an insulating material for a specific application. The change in resistivity with temperature may be great and shall be known when designing for operation conditions. 

Overall, compliance with BS EN IEC 62631-3-4 can assist you in selecting insulating materials that offer optimal resistance to leakage current, that ultimately contribute to the efficiency, durability and performance of the end-use application.  

What’s changed since the last update? 

BS EN IEC 62631-3-4:2019 supersedes BS 5823:1979, which is withdrawn. This edition includes the following significant technical changes with respect to IEC 60345: 

• The revised standard becomes part of the series IEC 62631-3-x. The title of the standard is changed and adapted to the series as Part 3-4 
• Clauses 2 "Normative references", 3 "Terms and definitions", and 4 "Significance" are added 
• The circuit diagram of the test apparatus is modified, and the structure diagram and pictures of the test apparatus are added 
• The orders of part clauses are adjusted