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IEC 60950-1 (ed.1) 

 

- Page 3 of 8 - 

 

 

Report No.   114383 

 

4.7.201 

Add the following after Clause 4.7.3.6: 

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.

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. 

P 

IEC 60950-1 (ed.1) 

 

- Page 4 of 8 - 

 

 

Report No.   114383 

 

4.7.201 

Parts for which the glow-wire test cannot be 
carried out, such as those made of soft or foamy 
material, shall meet the requirements specified in 
ISO 9772 for category FH-3 material. The glow-
wire test shall not be carried out on parts of 
material classified at least FH-3 according to ISO 
9772 provided that the sample tested was not 
thicker than the relevant part. 

Parts of insulating material supporting 
POTENTIAL IGNITION SOURCES shall be 
subject to the glow-wire test of AS/NZS 
60695.2.11 which shall be carried out at 750°C 

The test shall also be carried out on other parts of 
insulating material which are within a distance of 3 
mm of the connection. 

NOTE: Contacts in components such as switch 
contacts are considered to be connections. 

For parts which withstand the glow-wire test but 
produce a flame, other parts above the 
connection within the envelope of a vertical 
cylinder having a diameter of 20 mm and a height 
of 50 mm shall be subjected to the needle-flame 
test. However, parts shielded by a barrier which 
meets the needle-flame test shall not be tested. 

The needle-flame test shall be made in 
accordance with AS/NZS 4695.2.2 with the 
following modifications: 

All materials have suitable flame 
class, no testing required. 

P 

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. 

P 

IEC 60950-1 (ed.1) 

 

- Page 6 of 8 - 

 

 

Report No.   114383 

 

4.7.201 

The base material of printed boards shall be 
subjected to the needle-flame test of Clause 
4.7.201.3. The flame shall be applied to the edge 
of the board where the heat sink effect is lowest 
when the board is positioned as in normal use. 
The flame shall not be applied to an edge, 
consisting of broken perforations, unless the edge 
is less than 3 mm from a POTENTIAL IGNITION 
SOURCE. 

The test is not carried out if the – 

- Printed board does not carry any POTENTIAL 
IGNITION SOURCE; 

- Base material of printed boards, on which the 
available apparent power at a connection exceeds 
15 VA operating at a voltage exceeding 50 V and 
equal or less than 400 V (peak) a.c. or d.c. under 
normal operating conditions, is of flammability 
category FV-1 or better according to AS/NZS 
4695.707, or the printed boards are protected by 
an enclosure meeting the flammability category 
FV-0 according to AS/NZS 4695.707, or made of 
metal, having openings only for connecting wires 
which fill the openings completely; or 

- Base material of printed boards, on which the 
available apparent power at a connection exceeds 
15 VA operating at a voltage exceeding 400 V 
(peak) a.c. or d.c. under normal operating 
conditions, and base material of printed boards 
supporting spark gaps which provides protection 
against overvoltages, is of flammability category 
FV-0 according to AS/NZS 4695.707 or the 
printed boards are contained in a metal enclosure, 
having openings only for connecting wires which 
fill the openings completely. 

Compliance shall be determined using the 
smallest thickness of the material. 

NOTE: Available apparent power is the maximum 
apparent power which can be drawn from the supplying 
circuit through a resistive load whose value is chosen to 
maximise the apparent power from more than 2 min 
when the circuit supplied is disconnected.

 

All materials have suitable flame 
class, no testing required. 

P 

6.2.2 

Add the symbol [NZ] in the right hand margin 
beside the first paragraph. 

Add the following after the first paragraph: 

In Australia (this variation does not apply in New 
Zealand), compliance with 6.2.2 shall be checked 
by the tests of both 6.2.2.1 and 6.2.2.2. 

Delete the Note.

 

No TNV circuitry. 

N