ON STAGE 400P (serv.man4) - JBL Audio EMC - CB Certificate (repair manual). Page 60

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IEC 60950-1 (ed.1)
 
 
- Page 3 of 8 - 
 
 
www.nemko.com
 
Report No.   100711 
 
 
TRF No. IECEN60950_1C 
 
 
4.7.201 
Add
 the following after Clause 4.7.3.6: 
4.7.201 Resistance to fire – Alternative tests 
4.7.201.1 General 
Parts of non-metallic material shall be resistant to 
ignition and spread of fire. 
This requirement does not apply to decorative 
trims, knobs and other parts unlikely to be ignited 
or to propagate flames originating from inside the 
apparatus, or the following: 
a) Components that are contained in an enclosure 
having a flammability category of FV-0 according 
to AS/NZS 4695.707 and having openings only for 
the connecting wires filling the openings 
completely, and for ventilation not exceeding 1 
mm in width regardless of length. 
b) The following parts which would contribute 
negligible fuel to a fire: 
- small mechanical parts, the mass of which does 
not exceed 4 g, such as mounting parts, gears, 
cams, belts and bearings; 
- small electrical components, such as capacitors 
with a volume not exceeding 1750mm
3
, integrated 
circuits, transistors and optocoupler packages, if 
these components are mounted on material of 
flammability category FV-1, or better, according to 
AS/NZS 4695.707. 
NOTE: In considering how to minimize propagation of fire and 
what ‘small parts’ are, account should be taken of the 
cumulative effect of small parts adjacent to each other for the 
possible effect of propagating fire from one part to another. 
Compliance shall be checked by the tests of 
4.7.201.2, 4.7.201.3, 4.7.201.4 and 4.7.201.5. 
For the base material of printed boards, 
compliance shall be checked by the test of 
4.7.201.5. 
The tests shall be carried out on parts of non-
metallic material which have been removed from 
the apparatus. When the glow-wire test is carried 
out, the parts shall be placed in the same 
orientation as they would be in normal use. 
These tests are not carried out on internal wiring.
4.7.201.2 Testing of non-metallic materials 
Parts of non-metallic material shall be subject to 
the glow-wire test of AS/NZS 60695.2.11 which 
shall be carried out at 550°C.
 
All materials have suitable flame 
class, no testing required. 
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