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UL 2556 Section 9.3 (FT1) / Section 9.4 (VW-1) / UL 1581 Sec.1061
Test set-up The cable is secured vertically and provided with a paper indicator flag (P, 10 x 20 mm). A burner is used to apply the flame and it is secured at an angle of 20° to the vertical.
Flame temperature
Determined by the stipulated setting of the Tirril burner flame.
Test duration Section 9.3: 5 cycles of flame application for 15 sec with a break of 15 sec
Section 9.4: 5 cycles of flame application for 15 sec
with a break of 15 sec and a maximum break of 60 sec
Section 1061: 3 cycles of flame application for 60 sec with a break of 30 sec
Compliance criterion
It is only permitted for the sample to continue burning for at most 60 seconds after the flame has been removed and for at most 25 % of the paper indicator flag (P) to be burned. The cotton wadding (B) must not be ignited by dripping material.
(https://www.cabledatasheet.com/thumbnails/1v06-37.jpg)
https://www.cabledatasheet.com/pdf/1v06-37.pdf