IEC 60331-11:1999

Tests for electric cables under fire conditions - Circuit integrity - Part 11: Apparatus - Fire alone at a flame temperature of at least 750 °C

IEC 60331-23:1999

Tests for electric cables under fire conditions - Circuit integrity - Part 23: Procedures and requirements - Electric data cables

IEC 60331-25:1999

Tests for electric cables under fire conditions - Circuit integrity - Part 25: Procedures and requirements - Optical fibre cables