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IEC 60950-1 (ed.1) 

 

- Page 1 of 1 - 

 

 

Report No.   114383 

 

 

 
 

1.4.5 

1.4.5 second paragraph replaced by: 
If the equipment is intended for direct 
connection to an AC MAINS SUPPLY, the 
tolerances on RATED VOLTAGE shall be 
taken as +10 % and –10 %,unless: 

Class III equipment. 

N 

1.7.1 

1.7.1 fifth paragraph replaced by: 
When single rated voltage is given, it should 
be marked 220 V; when a rating range is 
given, the voltage range shall have a 
hyphen (-) between the minimum and 
maximum RATED VOLTAGES and should 
cover 220 V; When multiple RATED 
VOLTAGES or RATED VOLTAGE RANGES 
are given, they shall be separated by a solidus 
(/) and one of them must be 220 V and also 
factory default setting should be 220 V. 
 
RATED FREQUENCY or RATED 
FREQUENCY RANGE should be 50Hz or 
cover 50Hz, unless the equipment is designed 
for d.c.

 only;

 

Class III equipment. 

N 

1.7.12 

1.7.12 replaced by: 
Instructions and equipment marking related to 
safety shall be written in simplified Chinese in 
which the equipment is to be installed. 

Must be considered before 
marketed in China. 

— 

3.2.1 

3.2.1 Add at the end of the first paragraph: 
Plugs of apparatus which are intended for the 
connection of the mains supply should comply 
with requirements of GB1002. 

Class III equipment. 

N 

 

IEC 60950-1 (ed.1) 

 

- Page 1 of 6 - 

 

 

Report No.   114383 

 

 

 
 

Addition: 
Add the following terms. 

Equipment, Class 0I  1.2.4.101 
Material, VTM    1.2.12.101 

Considered. P 

Addition: 
CLASS 0I EQUIPMENT: Equipment where protection 
against electric shock is achieved by: 

a) using BASIC INSULATION, and 

b) providing a means of connecting to the protective 
earthing conductor in the building wiring those 
conductive parts that are otherwise capable of 
assuming HAZARDOUS VOLTAGES if the BASIC 
INSULATION fails, and 

c) using a supply cord without earthing conductor and 
a plug without earthing wire although the equipment 
has externally an earth terminal or a lead wire for 
earthing. 

Equipment provided with a cord set having a two-pin 
type plug with a lead wire for earthing is also regarded 
as Class 0I. 

NOTE – Class 0I equipment may have a part 
constructed with Double Insulation or Reinforced 
Insulation as well as an operating part as SELV circuit.

Class III equipment. 

N 

Replacement: 
FLAMMABILITY CLASSIFICATION OF MATERIALS: 
The recognition of the burning behaviour of materials 
and their ability to extinguish if ignited. Materials are 
classified as in 1.2.12.2 to 1.2.12.9, and 1.2.12.101 
when tested in accordance with annex A. 

NOTE 1 - When applying the requirements in this 
standard, HF-1 CLASS FOAMED MATERIALS are 
regarded as better than those of CLASS HF-2, and 
HF-2 better than HBF. 

NOTE 2 - Similarly, other MATERIALS, including rigid 
(engineering structural) foam of CLASSES 5V or V-0 
are regarded as better than those of CLASS V-1, V-1 
better than V-2, and V-2 better than HB. 

NOTE 3 - Similarly, for thin MATERIALS, VTM-0 Class 
materials are regarded as better than those of VTM-1 
Class, and VTM-1 better than VTM-2. 

Considered. P 

IEC 60950-1 (ed.1) 

 

- Page 2 of 6 - 

 

 

Report No.   114383 

 

 

 

Addition: 
VTM CLASS MATERIAL: Thin MATERIALS fulfil the 
specified conditions during the test of clause A.101 
applied for materials that the test and evaluation of 
clauses A.6 to A.10 is difficult to enforce. Materials are 
classified to three classifications as VTM-0, VTM-1 and 
VTM-2 according to the conditions after the removal of 
the test flame. 

Considered. P 

Addition: 
Marking for CLASS 0I EQUIPMENT 

For CLASS 0I EQUIPMENT, the following instruction 
shall be indicated on the visible place of the mains plug 
or the main body: 

“Provide an earthing connection” 

Moreover, for CLASS 0I EQUIPMENT, the following 
instruction shall be indicated on the visible place of the 
main body or written in the operating instructions: 

“Provide an earthing connection before the mains plug 
is connected to the mains. And, when disconnecting 
the earthing connection, be sure to disconnect after 
pulling out the mains plug from the mains.” 

Class III equipment. 

N 

Replacement: 
Replace “IEC 60083” to “IEC 60083 or JIS C 8303” in 
2.1.1.1 b). 

Considered. P 

Addition: 
Add the following after 1st paragraph. 

This also applies to the conductor of lead wire for 
protective earthing of CLASS 0I EQUIPMENT. 

Class III equipment. 

N

Replacement: 
Replace 2nd sentence in 1st paragraph. 

For CLASS I EQUIPMENT with a DETACHABLE 
POWER SUPPLY CORD, the earthing terminal in the 
appliance inlet is regarded as the main protective 
earthing terminal. 

Class III equipment. 

N

Replacement: 
Replace 1st sentence. 

Protective earthing connections of CLASS I 
EQUIPMENT shall make earlier and break later than 
the supply connections in each of the following: 

Class III equipment. 

N

IEC 60950-1 (ed.1) 

 

- Page 3 of 6 - 

 

 

Report No.   114383 

 

 

 

Addition: 
Earthing of CLASS 0I EQUIPMENT 

Plugs with a lead wire for earthing shall not be used for 
equipment having a rated voltage exceeding 150V. 

For plugs with a lead wire for earthing, the lead wire 
shall not be earthed by a clip. 

CLASS 0I EQUIPMENT shall be provided with an 
earthing terminal or lead wire for earthing in the 
external where easily visible. 

Class III equipment. 

N 

Delete 1) in Table 3B. 

Considered. 

P 

Addition: 
Add the following informative remark after the last 
sentence. 

Remark - IEC 61965 is also applicable instead of IEC 
60065. 

No CRT in the equipment. 

N 

Addition: 
Add the following to suffix 5) as specified in 
“Conditions applicable to Table 4A, Parts 1 and 2”. 

With regard to Table 4A, insulating materials 
complying with Japanese requirements (refer to 
Japanese differences for the current IEC 60335-1 (3rd 
Edition) in CB Bulletin 101B) are also acceptable. 

Add a suffix 7) in “Conditions applicable to Table 4A, 
Parts 1 and 2”. 

In the right column of Table 4A, Part 1, add suffix 7) to 
“50” (K), corresponding to “- without T – marking” in 
the left column so as to become “50 7)”. 

Add 7) to Table 4A, Part 2 as follows. 

7) This value shall apply only to wiring or cords 
complying with relevant IEC standards. Others shall 
comply with Japanese requirements (refer to Japanese 
differences for the current IEC 60335-1 (3rd Edition) in 
CB Bulletin 101B). 

Considered. P 

Addition: 
Add the following in 7th paragraph. 

- for thin materials, e.g., flexible printed boards, etc., 
used inside equipment, be of FLAMMABILITY CLASS 
VTM-2 or better. 

No such thin materials used. 

N