HD 22.7 S1-1989 Rubber Insulated Cables of Rated Voltage up to and Including 450/750V Part 7: Cables with Increased Heat Resistance for Internal Wiring for a Conductor Temperature of 110 Degrees Celsius
1992HD 22.7 S1-1992 Rubber insulated cables of rated voltages up to and including 450/750 V; part 7: cables with increased heat resistance for internal wiring for a conductor temperature of 110 C
1989HD 22.7 S1-1989 Rubber Insulated Cables of Rated Voltage up to and Including 450/750V Part 7: Cables with Increased Heat Resistance for Internal Wiring for a Conductor Temperature of 110 Degrees Celsius