To determine the mechanical strength of insulated cords, cables, couplers, plug pin insulating sleeves and enclosures in the cold. In compliance with IEC 60811-1-4/ 1985 + corrigendum May 1986 + A1/ 1993 § 8.5 Fig. 2, IEC 60884-1/ 2002-06 § 24.4 Fig 21, CEE 7/ 1963 § 24e Fig. 31, EN 60811-1-4/ 1995 § 8.5 Fig. 2, VDE 0473 Part 811-1-4/ March 1996 § 8.5 Fig. 2