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page 19 of 35
Ref.No.: 312941
IEC 60065
Clause
Requirement - Test
Result - Remark
Verdict
20
RESISTANCE TO FIRE
20.1
Electrical components and mechanical parts
a) Exemption for components contained in an
enclosure of material FV 0 to IEC 60707 with
openings not exceeding 1 mm in width
enclosure of material FV 0 to IEC 60707 with
openings not exceeding 1 mm in width
N
b) Exemption for small components as defined in
20.1
20.1
P
20.1.1 Electrical
components meet the requirements of
14.2.5, 14.4, 14.5.3, 14.6.6 or 20.1.4
(See list of critical components)
P
20.1.2
Insulation of internal wiring working at voltages
> 4 kV or leaving an internal fire enclosure, not
contributing to the spread of fire
> 4 kV or leaving an internal fire enclosure, not
contributing to the spread of fire
N
20.1.3
Material of printed circuit boards on which the
available power exceeds 15 W at a voltage
between 50 V and 400 V (peak) a.c. or d.c. meets
FV 1 or better to IEC 60707, unless used in a fire
enclosure
available power exceeds 15 W at a voltage
between 50 V and 400 V (peak) a.c. or d.c. meets
FV 1 or better to IEC 60707, unless used in a fire
enclosure
(See list of critical components)
P
Material of printed circuit boards on which the
available power exceeds 15 W at a voltage
exceeding 400 V (peak) a.c. or d.c. meets FV 0 to
IEC 60707
available power exceeds 15 W at a voltage
exceeding 400 V (peak) a.c. or d.c. meets FV 0 to
IEC 60707
N
20.1.4
Components and parts not covered by 20.1.1,
20.1.2 and 20.1.3 (other than fire enclosures)
mounted nearer to a potential ignition source than
the distances in Table 13 comply with the relevant
flammability category in Table 13
20.1.2 and 20.1.3 (other than fire enclosures)
mounted nearer to a potential ignition source than
the distances in Table 13 comply with the relevant
flammability category in Table 13
(See list of critical components)
P
Components and parts as above but shielded from
a potential ignition source, with the barrier area in
accordance with Table 13 and fig. 13
a potential ignition source, with the barrier area in
accordance with Table 13 and fig. 13
N
20.2
Fire enclosure
20.2.1
Potential ignition sources with open circuit voltage
> 4 kV (peak) a.c. or d.c. contained in a fire
enclosure to FV 1
> 4 kV (peak) a.c. or d.c. contained in a fire
enclosure to FV 1
N
20.2.2 Internal
fire enclosures with openings not
exceeding 1 mm in width and with openings for
wires completely filled
wires completely filled
N
20.2.3
Requirements of 20.2.1 and 20.2.2 met by an
internal fire enclosure
internal fire enclosure
N
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