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Page 37 of 38 

 

Report No. : W12-950-062

 

 

Clause 

Requirement + Test 

Result - Remark 

Verdict

 

TRF No. IECEN60950_1C 

 

N/A 

Test voltage applied between: 

Voltage shape 

(AC, DC, 

impulse, surge) 

Test voltage 

(V) 

Breakdow

n 

 Yes / No

Functional: 

-- -- 

-- 

-- 

Basic/supplementary: 

-- -- 

-- 

-- 

Reinforced: 

-- -- 

-- 

-- 

Supplementary information: 

 

P 

 

Ambient temperature (

°C)  ................................... : 

-- 

⎯ 

 

Power source for EUT: Manufacturer, model/type, 
output rating  ........................................................ : 

-- 

⎯ 

Com-

ponent  

No. 

Fault 

Supply 

voltage

 (Vdc) 

Test 

time 

Fuse #

Fuse 

current

(A) 

Observation 

Ventilation 
Blocked 

-- 12 

2h15min

-- 

1.09 

Unit 

normal 

operation, run for 

thermal equilibrium.  No damage, 
no hazard.   

Tweeter 
Speaker  

short-circuit 12 

1h30min

-- 

1.09 

Tweeter 

speaker stop work, No 

damage, no hazard. 

Subwoofer 
Speaker  

short-circuit 

12 

2h 

-- 

1.09 

Subwoofer speaker stop work, No 
damage, no hazard. 

Max. non-
clipped 

-- 12 

2h25min

-- 

3.15 

Unit 

normal 

operation, run for 

thermal equilibrium.  No damage, 
no hazard.   

C18 short-circuit  12 

10min 

-- 

0.112 

Unit shut down after short circuit. 
No damage, no hazard.   

Supplementary information:-- 

 

Page 38 of 38 

Report No. : W12-950-062 

Clause 

Requirement + Test 

Result - Remark 

Verdict

 

TRF No. IECEN60950_1C 

 

N/A 

 

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: 

 

 

N/A 

Transformer 

 

 

                                                                          Page 1 of 17                                Report No. : W12-950-062 

 

 

IEC60950_1B - ATTACHMENT 

Clause 

Requirement + Test 

Result - Remark 

Verdict

 

Information technology equipment – Safety – 

Part 1: General requirements

 ................ : 

EN  60950-1:2006/A11:2009/A1:2010/A12:2011 

. ..................... :  EU_GD_IEC60950_1B_II 

 ................... :  SGS Fimko Ltd 

 ......................... :  Date 2011-08 

 

 

Clause 

Requirement + Test 

Result - Remark 

Verdict

Contents 

Add the following annexes: 
Annex ZA (normative)  

 

Normative references to international    

     publications 

with 

their 

corresponding 

     publications 
Annex ZB (normative)  

 

Special national conditions 

P 

General 

Delete all the “country” notes in the reference document (IEC 60950-1:2005) 
according to the following list: 
1.4.8  Note 2 

1.5.1   

Note 2 & 3  1.5.7.1 

Note 

1.5.8  Note 2  

1.5.9.4  

Note    

1.7.2.1 

Note 4, 5 & 6 

2.2.3   Note    

2.2.4    

Note    

2.3.2    

Note 

2.3.2.1 Note 2  

2.3.4    

Note 2  

2.6.3.3  

Note 2 & 3 

2.7.1   Note    

2.10.3.2  

Note 2  

2.10.5.13 

Note 3 

3.2.1.1 Note   

3.2.4    

Note 3. 

2.5.1    

Note 2 

4.3.6   Note 1 & 2   4.7    

Note 4  

4.7.2.2  

Note 

4.7.3.1Note 2  

5.1.7.1  

Note 3 & 4   5.3.7    

Note 1 

6  

Note 2 & 5   6.1.2.1  

Note 2  

6.1.2.2  

Note 

6.2.2   Note    

6.2.2.1  

Note 2  

6.2.2.2  

Note 

7.1   Note 3  

7.2    

Note             7.3  

          Note 1 & 2 

G.2.1  Note 2  

Annex H 

Note 2 

P 

General

 

(A1:2010)

 

Delete all the “country” notes in the reference document (IEC 60950-
1:2005/A1:2010) according to the following list: 
1.5.7.1 

Note   

 

6.1.2.1  

Note 2 

 

6.2.2.1  

Note 2   EE.3 

 Note 

P 

                                                                          Page 2 of 17                                Report No. : W12-950-062 

 

 

IEC60950_1B - ATTACHMENT 

Clause 

Requirement + Test 

Result - Remark 

Verdict

 

 

1.3.Z1 

Add the following subclause: 
1.3.Z1 Exposure to excessive sound pressure  
The apparatus shall be so designed and 
constructed as to present no danger when used 
for its intended purpose, either in normal 
operating conditions or under fault conditions, 
particularly providing protection against exposure 
to excessive sound pressures from headphones 
or earphones. 

NOTE Z1 A new method of measurement is described 
in EN 50332-1, Sound system equipment: 
Headphones and earphones associated with portable 
audio equipment - Maximum sound pressure level 
measurement methodology and limit considerations - 
Part 1: General method for “one package equipment”, 
and in EN 50332-2, Sound system equipment: 
Headphones and earphones associated with portable 
audio equipment - Maximum sound pressure level 
measurement methodology and limit considerations - 
Part 2: Guidelines to associate sets with headphones 
coming from different manufacturers.

 

 N/A 

(A12:2011) 

In EN 60950-1:2006/A12:2011 
Delete the addition of 1.3.Z1 / EN 60950-1:2006 
Delete the definition 1.2.3.Z1 / EN 60950-1:2006 
/A1:2010  

 N/A 

1.5.1 

Add the following NOTE: 

NOTE Z1 The use of certain substances in electrical 
and electronic equipment is restricted within the EU: 
see Directive 2002/95/EC

 

 P 

1.7.2.1 

(A1:2010) 

In addition, for a PORTABLE SOUND SYSTEM, 
the instructions shall include a warning that 
excessive sound pressure from earphones and 
headphones can cause hearing loss. 

 N/A 

1.7.2.1 
(A12.2011) 

In EN 60950-1:2006/A12:2011 
Delete NOTE Z1 and the addition for Portable 
Sound System. 
Add the following clause and annex to the existing 
standard and amendments. 

 N/A 

N/A