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IEC 60950-1 (ed.1) 

 

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Report No.   114383 

 

6.2.2.1 

Add the symbol [NZ] in the right hand margin 
beside the first paragraph including Note 1. 

Delete the Note 2. 

Add the following after the first paragraph: 

In Australia (this variation does not apply in New 
Zealand), the electrical separation is subjected to 
10 impulses of alternating polarity, using the 
impulse test generator of annex N for 10/700µs 
impulses. The interval between successive 
impulses is 60 s and the initial voltage, Uc, is: 

- for 6.2.1 a): 7.0 kV for hand-held telephones 
and for headsets and 2.5 kV for other equipment; 
and 

- for 6.2.1 b) and 6.2.1 c): 1.5 kV. 

NOTE 201: The 7 kV impulse simulates lightning 
surges on typical rural and semi-rural network lines. 

NOTE 202: The 2.5 kV for 6.2.1 a) was chosen to 
ensure adequacy of the insulation concerned and does 
not necessarily simulate likely overvoltages.

 

No TNV circuitry. 

N 

6.2.2.2 

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

Delete the Note. 

Add the following after the second paragraph: 

In Australia (this variation does not apply in New 
Zealand), the a.c. test voltage is: 

- for 6.2.1 a): 3 kV; 
and 

- for 6.2.1 b) and 6.2.1 c): 1.5 kV. 

NOTE 201: Where there are capacitors across the 
insulation under test, it is recommended that d.c. test 
voltages are used. 

NOTE 202: The 3 kV and 1.5 kV values have been 
determined considering the low frequency induced 
voltages from the power supply distribution system.

No TNV circuitry. 

N 

IEC 60950-1 (ed.1) 

 

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Report No.   114383 

 

Annex P 

Add the following Normative References to 
Annex P: 

IEC 60065, Audio, Video and similar electronic 
apparatus – Safety requirements 

AS/NZS 3191, Approval and test specification – 
Electric flexible cords 

AS/NZS 3112, Approval and test specification – 
Plugs and socket-outlets 

AS/NZS 4695.707, Fire hazard testing of 
electrotechnical products – Methods of test for 
the determination of the flammability of solid 
electrical insulating materials when exposed to 
an igniting source 

Considered. P 

Index 

Between the entries ‘polyimide insulating 
material’ and ‘powder’ insert the following: 

POTENTIAL IGNITION SOURCE 

1.12.201, 

4.7.201.3, 4.7.201.5 

Considered. 

— 

IEC 60950-1 (ed.1) 

 

- Page 1 of 5 - 

 

 

Report No.   114383 

 

 

 

Clause 

Requirements – Test 

Result – Remark 

Verdict

The following is a summary of the key national differences based on national regulatory 
requirements, such as the National Electrical Code (NEC), ANSI/NFPA 70-2002, which are 
referenced in legislation and which form the basis for the rules and practices followed in 
electrical and building installations. The bi-national standard (CAN/CSA C22.2 No. 60950-1/UL 
60950-1, First Edition) should be consulted for further details on the national differences 
summarized below 

1.1.1 

All equipment is to be designed to allow 
installation in accordance with the National 
Electrical Code (NEC), ANSI/NFPA 70, the 
Canadian Electrical Code (CEC), Part I, 
CAN/CSA C22.1, and when applicable, the 
National Electrical Safety Code, IEEE C2. Also, 
unless marked or otherwise identified, installation 
is allowed per the Standard for the Protection of 
Electronic Computer/Data-Processing Equipment, 
ANSI/NFPA 75. 

Class III equipment. 

N 

1.4.14 

For Pluggable Equipment Type A, the protection 
in the installation is assumed to be 20A. 

Class III equipment.  

N 

1.5.5 

For lengths exceeding 3.05 m, external 
interconnecting flexible cord and cable 
assemblies are required to be a suitable cable 
type (e.g. DP, CL2) specified in the NEC. 

For lengths 3.05m or less, external 
interconnecting flexible cord and cable 
assemblies that are not types specified in the 
NEC are required to have special construction 
features and identification markings. 

Interconnecting cables contain 
SELV only. 

P 

1.7.1 

Equipment for use on a.c. mains supply systems 
with a neutral and more than one phase 
conductor (e.g. 120/240 V, 3-wire) require a 
special marking format for electrical ratings. 

A voltage rating that exceeds an attachment plug 
cap rating is only permitted if it does not exceed 
the extreme operating conditions in Table 2 of 
CAN/CSA C22.2 No. 235, and if it is part of a 
range that extends into the Table 2 “Normal 
Operating Conditions”. Likewise, a voltage rating 
shall not be lower than the specified “Normal 
Operating Conditions”, unless it is part of a range 
that extends into the “Normal Operating 
Conditions”. 

Class III equipment. 

N 

2.5 

Where a fuse is used to provide Class 2, Limited 
Power Source, or TNV current limiting, it shall not 
be operator-accessible unless it is not 
interchangeable. 

No such fuse used. 

N 

IEC 60950-1 (ed.1) 

 

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Report No.   114383 

 

2.7.1 

Suitable NEC/CEC branch circuit protection rated 
at the maximum circuit rating is required for all 
standard supply outlets, receptacles and medium-
base or smaller lampholders if the supply branch 
circuit protection is not suitable. 

Power distribution transformers distributing power 
at 100 V or more, and rated 10 kVA or more, 
require transformer overcurrent protection. 

No standard supply outlets, 
receptacles, lampholders or such 
transformers. 

N 

3.2 

Wiring methods (terminals, leads etc.) used for 
the connection of the equipment to the mains 
shall be in accordance with the NEC/CEC. 

Class III equipment. 

N 

3.2.1 

Power supply cords are required to have 
attachment plugs rated not less than 125% of the 
rated current of the equipment. 

Class III equipment. 

N 

3.2.3 

Permanent connection of equipment to the mains 
supply by a power supply cord is not permitted, 
except for certain equipment, such as ATMs. 

Class III equipment. The 
equipment is not permanently 
connected to the mains. 

N 

3.2.5 

Power supply cords are required to be no longer 
than 4.5m in length. 

Flexible power supply cords are required to be 
compatible with Article 400 of the NEC, and 
Tables 11 and 12 of the CEC. 

Class III equipment. 

v 

3.2.9 

Permanently connected equipment is required to 
have a suitable wiring compartment and wire 
bending space.

 

Class III equipment. The 
equipment is not permanently 
connected to the mains. 

N 

3.3 

Wiring terminals and associated spacings for field 
wiring connections shall comply with CSA C22.2 
No. 0. 

Class III equipment. 

N 

3.3.3 

Wire binding screws are not permitted to attach 
conductors larger than 10 AWG (5.3 mm

2

). 

Class III equipment. 

N 

3.3.4 

Terminals for permanent wiring, including 
protective earthing terminals, are required to be 
suitable for U.S./Canadian wire gauge sizes, 
rated 125% of the equipment rating, and 
specially marked when specified (1.7.7).  

Class III equipment, not 
permanently connected to the 
mains. 

N 

3.4.2 

Motor control devices are required for cord-
connected equipment with a motor if the 
equipment is rated more than 12 A, or if the 
motor has a nominal voltage rating greater than 
120 V, or is rated more than 1/3 hp (locked rotor 
current over 43 A). 

No such motors in the 
equipment. 

N 

3.4.8 

Vertically-mounted disconnect switches and 
circuit breakers are required to have the “on” 
position indicated by the handle in the up 
position. 

No disconnect switch in the 
equipment. 

N 

3.4.11 

For computer room applications, equipment with 
battery systems capable of supplying 750 VA for 
five minutes are required to have a battery 
disconnect means that may be connected to the 
computer room remote power-off circuit. 

No battery in the equipment. 

N