DUET II (serv.man6) - JBL Audio EMC - CB Certificate (repair manual). Page 11

IEC 60950-1 (ed.1) 

 

- Page 5 of 8 - 

 

 

Report No.   114383 

 

4.7.201 

The needle-flame test shall not be carried out on 
parts of material classified as V-0 or V-1 
according to IEC 60695-11-10, provided that the 
sample tested was not thicker than the relevant 
part. 

If the parts, other than enclosures, do not 
withstand the glow-wire tests of 4.7.201.3, by 
failure to extinguish within 30 s after the removal 
of the glow-wire tip, the needle-flame test 
detailed in 4.7.201.3 shall be made on all parts of 
non-metallic material which are within a distance 
of 50 mm or which are likely to be impinged upon 
by flame during tests of 4.7.201.3. Parts shielded 
by a separate barrier which meets the needle-
flame test need not be tested. 

NOTE 1: If the enclosure does not withstand the glow- 
wire test the equipment is considered to have failed to 
meet the requirements of Clause 4.7.201 without the 
need for consequential testing. 

NOTE 2: If other parts do not withstand the glow-wire 
test due to ignition of the tissue paper and if this 
indicates that burning or glowing particles can fall onto 
an external surface underneath the equipment, the 
equipment is considered to have failed to meet the 
requirements of Clause 4.7.201 without the need for 
consequential testing. 

NOTE 3: Parts likely to be impinged upon by the flame 
are considered to be those within the envelope of a 
vertical cylinder having a radius of 10 mm and a height 
equal to the height of the flame, positioned above the 
point of the material supporting, in contact with, or in 
close proximity to, connections.

 

All materials have suitable flame 
class, no testing required. 

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