IEC 60331-21 / IEC 60331-22 (draft) / IEC 60331-23

Test set-up The cable is laid horizontally, with the core and shield connected to a power supply at the following voltages

■■ High voltage cables 0.6/1 kV: U0/U min. 100 V

■■ Data cables: 110 V

The flame is applied under the cable from a horizon-tally offset position across a width of 1200 mm. Part 21: power and control cables ≤1 kV

Part 22 (draft): power cables > 1 kV

Part 23: copper data cables

Flame temperature

min. 750 °C BS: 950 °C ± 40 °C

Test duration 180 min

Compliance criterion

When the flame is applied and during a cooling period of an additional 12 hours, it must still be pos-sible to transmit power or signals via all conductors. There must be no short circuit between the conductors or to the shielding and no break in the conductors.

Flame temperature

At least 750 °C (equipment IEC 60331-11)

Test duration Recommended: 90 min

Compliance criterion

When the flame is applied and during a cooling period of an additional 15 minutes, it must still be possible to transmit power or signals via all conduc-tors. There must be no short circuit between the conductors or to the shielding and no open phase.

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