Flammability rating to UL 94identical with IEC 60707/VDE 0304, Part 3
Flammability
The flammability class specifications refer only to insulating materials which are in direct contact with electrically conductive parts. The flammability of the material with the lowest rating is specified. Flammability class acc. to
| Self-extinguishing
after . . . seconds in vertical
burning test
| Possibly dripping
material ignites objects
| No more smouldering
after . . . seconds
| UL
| IEC/VDE
| V 0 | FV 0 | Less than 5 seconds | No | 30 seconds | V 1 | FV 1 | Less than 25 seconds | No | 30 seconds | V 2 | FV 2 | Less than 25 seconds | Possible | 60 seconds | HB | FH | Burn rate (horizontal burning test with the following values): Wall thickness up to 3 mm = 3 inches/minute, max.; wall thickness over 3 mm = 1.5 inches/minute, max. |
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