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IEC 60950-1 (ed.1) 

 

- Page 4 of 6 - 

 

 

Report No.   114383 

 

 

 

Replacement: 
Replace Table 5A. 

Class III equipment. 

N 

Replacement: 
Replace 3rd Item as follows. 

- BASIC INSULATION between the PRIMARY 
CIRCUIT and accessible conductive parts of CLASS I 
or 0I EQUIPMENT; 

Class III equipment. 

N 

Addition: 
Add the subclause A.101 with the title “Flammability 
tests for classifying materials VTM” and the following: 

Thin sheet materials shall comply with ISO 9773. 

Considered. 

N

Addition: 
Add the following to the Note for Table G.1. 

2. In Japan, MAINS TRANSIENT VOLTAGE for 
equipment with a Nominal AC MAINS SUPPLY 
VOLTAGE of 100V is to be decided based on the 
column where Nominal AC MAINS SUPPLY 
VOLTAGE in Table G.1 is 150V. 

Not used. 

N

Addition: 
Add “IEC 61965:2000, Mechanical Safety for Cathode 
Ray Tubes”. 

No CRT. 

N

Replacement: 
Replace 2nd paragraph. 

This annex covers to round winding wires having 
diameters between 0.05 mm and 5.00 mm. 

No TIW. 

N

 
 

IEC 60950-1 (ed.1) 

 

- Page 5 of 6 - 

 

 

Report No.   114383 

 

 

 

Replacement: 
Electric strength 
The test sample is prepared according to IEC 60851-
5:1997, 4.4.1 (for a twisted pair). The sample is then 
subjected to the test of 5.2.2 of this standard, with a 
test voltage not less than twice the appropriate voltage 
in table 5B (see 5.2.2) of this standard. However, the 
minimum values shall be as follows: 

- for BASIC INSULATION or SUPPLEMENTARY 
INSULATION, 3000 V, or; 

- for REINFORCED INSULATION, 6000 V. 

No TIW. 

N

Test 8 of IEC 60851-3:1996, 5.1.1, using the mandrel 
diameters of table U.1. The test sample is then 
examined in accordance with IEC 60851-3:1996, 
5.1.1.4, followed by the test of 5.2.2 of this standard 
except applying the test voltage between the wire and 
the mandrel. A test voltage shall not be less than twice 
the appropriate voltage in table 5B (see 5.2.2) of this 
standard. However, the minimum values shall be as 
follows: 

- for BASIC INSULATION or SUPPLEMENTARY 
INSULATION, 1500 V, or; 

- for REINFORCED INSULATION, 3000 V. 

NOTE: “twice” in the 6

th

 line is deleted – ref. 

confirmation by Japan NCB – JQA. 

No TIW. 

N

 
The tension to be applied to the wire during winding on 
the mandrel is calculated from the wire diameter to be 
equivalent to 118 Mpa ± 10 % (118 N/mm2 ± 10 %). 

No TIW. 

N

IEC 60950-1 (ed.1) 

 

- Page 6 of 6 - 

 

 

Report No.   114383 

 

 

Replace the first paragraph with the following. 
Test 9 of IEC 60851-6:1996, followed by the electric 
strength test of 5.2.2 of this standard except applying 
the test voltage between the wire and the mandrel. A 
test voltage shall be the appropriate voltage in table 5B 
(see 5.2.2) of this standard. 
However, the minimum values shall be as follows: 
 
- for BASIC INSULATION or SUPPLEMENTARY 
INSULATION, 1500 V, or; 

 

- for REINFORCED INSULATION, 3000 V. 

Considered. 

N

Replace the third paragraph describing the test voltage 
with the following. 
The test voltage shall not be less than the appropriate 
voltage in table 5B (see 5.2.2) of this standard. 
However, the minimum values shall be as follows: 
 
- for BASIC INSULATION or SUPPLEMENTARY 
INSULATION, 1500 V, or; 
 
- for REINFORCED INSULATION, 3000 V. 
It is applied between the shot and the conductor. 

Considered. 

N

Replace with the following. 
The test voltage for ROUTINE TESTING shall be the 
appropriate voltage in table 5B (see 5.2.2) of this 
standard. Howeve, the minimum values shall be as 
follows: 
 
- for BASIC INSULATION or SUPPLEMENTARY 
INSULATION, 1500 V r.m.s. or 2100 V peak, or; 
 
- for REINFORCED INSULATION, 3000 V r.m.s. or 
4200 V peak. 

Considered. 

N

Replace with the following. 
Twisted pair samples shall be tested in accordance 
with IEC 60851-5:1996, 4.4.1. The minimum 
breakdown voltage shall not be less than twice the 
appropriate voltage in table 5B (see 5.2.2) of this 
standard. However, the minimum values shallbe as 
follows: 
 
- for BASIC INSULATION or SUPPLEMENTARY 
INSULATION, 3000 V r.m.s. or 4200 V peak, or; 
 
- for REINFORCED INSULATION, 6000 V r.m.s. or 
8400 V peak. 

Considered. 

N

IEC 60950-1 (ed.1) 

 

- Page 6 of 6 - 

 

 

Report No.   114383 

 

 

Replace the first paragraph with the following. 
Test 9 of IEC 60851-6:1996, followed by the electric 
strength test of 5.2.2 of this standard except applying 
the test voltage between the wire and the mandrel. A 
test voltage shall be the appropriate voltage in table 5B 
(see 5.2.2) of this standard. 
However, the minimum values shall be as follows: 
 
- for BASIC INSULATION or SUPPLEMENTARY 
INSULATION, 1500 V, or; 

 

- for REINFORCED INSULATION, 3000 V. 

Considered. 

N

Replace the third paragraph describing the test voltage 
with the following. 
The test voltage shall not be less than the appropriate 
voltage in table 5B (see 5.2.2) of this standard. 
However, the minimum values shall be as follows: 
 
- for BASIC INSULATION or SUPPLEMENTARY 
INSULATION, 1500 V, or; 
 
- for REINFORCED INSULATION, 3000 V. 
It is applied between the shot and the conductor. 

Considered. 

N

Replace with the following. 
The test voltage for ROUTINE TESTING shall be the 
appropriate voltage in table 5B (see 5.2.2) of this 
standard. Howeve, the minimum values shall be as 
follows: 
 
- for BASIC INSULATION or SUPPLEMENTARY 
INSULATION, 1500 V r.m.s. or 2100 V peak, or; 
 
- for REINFORCED INSULATION, 3000 V r.m.s. or 
4200 V peak. 

Considered. 

N

Replace with the following. 
Twisted pair samples shall be tested in accordance 
with IEC 60851-5:1996, 4.4.1. The minimum 
breakdown voltage shall not be less than twice the 
appropriate voltage in table 5B (see 5.2.2) of this 
standard. However, the minimum values shallbe as 
follows: 
 
- for BASIC INSULATION or SUPPLEMENTARY 
INSULATION, 3000 V r.m.s. or 4200 V peak, or; 
 
- for REINFORCED INSULATION, 6000 V r.m.s. or 
8400 V peak. 

Considered. 

N