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Report No.  111547 

 

 
TRF No.:IECEN60950_1B 

 

C.2 TABLE: 

transformers 

 

 

Loc. 

Tested insulation 

Working 
voltage 
peak / V 
 
(2.10.2) 

Working 
voltage 
rms / V 
 
(2.10.2) 

Required 
electric 
strength 
 
(5.2) 

Required 
clearance / 
mm 
 
(2.10.3) 

Required 
creepage 
distance / 
mm 
(2.10.4) 

Required 
distance 
thr. insul. 
 
(2.10.5) 

 

 

 

 

 

 

 

 

Loc. 
 
 
 
 

Tested insulation 

 

 

Test 
voltage/ 
V 

Measured 
clearance / 
mm 

Measured 
creepage 
dist./ mm 

Measured 
distance 
thr. insul. / 
mm; 
number of 
layers 

 

 

 

 

 

 

supplementary information: 

 

 

IEC 60950-1 (ed.1) 

 

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Report No.   111547 

 

 

Clause 

Requirements – Test 

Result – Remark 

Verdict 

This Annex sets out variations between this Standard and IEC 60950-1:2001(AS/NZS 60950.1:2003). 
These variations indicate national variations for purposes of the IECEE CB Scheme and will be published 
in the IECEE CB Bulletin. These variations are indicated within the body of the Standard. 

The variations are as follows: 

1.2 

Between the definitions for ‘Person, service’ and 
‘Range, rated frequency’ insert the following: 

 1.2.12.201 

Inserted. 

 

1.2.12.15  After the definition 1.2.12.15, add the following: 

Possible fault which can start a fire if the open- 
circuit voltage measured across an interruption or 
faulty contact exceeds a value of 50 V (peak) a.c. 
or d.c. and the product of the peak value of this 
voltage and the measured r.m.s. current under 
normal operating conditions exceeds 15 VA. 

Such a faulty contact or interruption in an 
electrical connection includes those which may 
occur in CONDUCTIVE PATTERNS on PRINTED 
BOARDS. 

NOTE 201: An electronic protection circuit may be used 
to prevent such a fault from becoming a POTENTIAL 
IGNITION SOURCE. 

NOTE 202: This definition is from AS/NZS 60065:2003.

Added. 

1.5.1 

Add the following to the end of first paragraph: 

‘or the relevant Australian/New Zealand 
Standard’. 

Added. 

 

1.5.2 

Add the following to the end of first and third dash 
items: 

‘or the relevant Australian/New Zealand 
Standard’. 

Added. 

 

2.1 

Delete the Note 

Deleted. 

 

3.2.3 

Delete Note 2 

Deleted. 

IEC 60950-1 (ed.1) 

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Report No.   111547 

 

3.2.5.1 

Modify Table 3B as follows: 

Delete the first four rows and replace with 

Delete Note 1. 

Considered. 

4.3.6 

Replace paragraph three with: 

Equipment with a plug portion, suitable for 
insertion into a 10 A 3-pin flat-pin socket-outlet 
complying with AS/NZS 3112, shall comply with 
the requirements in AS/NZS 3112 for equipment 
with integral pins for insertion into socket-outlets. 

Class III equipment. 

4.3.13.5 

Add the following to the end of first paragraph: 

‘or AS/NZS 2211.1’. 

No lasers. 

4.7 

Add the following paragraph: 

For alternative tests refer to Clause 4.7.201. 

No alternative test. 

IEC 60950-1 (ed.1) 

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Report No.   111547 

 

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.

 

No alternative test.