To prepare International Standards on the principles of insulation coordination applicable to all low-voltage equipment.

To provide IEC Technical Committees with :

- rules for the determination of voltage ratings for insulation coordination and

- physical data for dimensioning of insulations to given voltage ratings

Horizontal Safety Function:

Insulation coordination for voltages up to and including 1000 V a.c. and 1 500 V d.c., including dimensioning of clearances, and creepage distances and requirements for solid insulation with respect to insulation coordination. This includes all methods of dielectric testing with respect to insulation coordination.