Basic norms of interchangeability. Geometrical product specifications. System for tolerances on linear sizes. Series of tolerances, limit deviations for holes and shafts
Test methods specific to filling compounds of electric cables. Drop-point. Separation of oil. Lower temperature brittleness. Total acid number. Absence of corrosive components. Permittivity at temperature 23 C. D.c. resistivity at temperature 23 C and 100 C