AVR 355 (serv.man6) - Harman Kardon Audio EMC - CB Certificate (repair manual). Page 24

 

 

- Page 16 of 42 - 

 

 

 

 

Report No.  98388 

 

Capacitors with volume exceeding 1750 mm³, 
mounted closer to a potential ignition source than 
table 5 permits: compliance with IEC 60 384-1, 4.38 
category B or better  ................................................. : 

Several E. cap.  
Vol. >1750mm

3

, but metal 

cases. 

 

Shielded by a barrier 

acc. to 20.1.4/ table 21

 or metal 

 .................................................................................. : 

 

14.3 

Inductors and windings 

See below. 

 

Comply with IEC 61558-1, IEC 61558-2 
(as relevant) and clause 20.1.4 

Transformers evaluated  
according to 14.3.3, 14.3.4  
and 14.3.5 

14.3.1 

Transformers and inductors marked with 
manufacturer's name and type  ............................... : 

Adequate marking applied. 
Type no and Manufacturer’s ID 

 

Transformers and inductors separately approved  . : 

No 

14.3.2 General 

Isolating transformers 

 

Insulation material complies  with clause 20.1.4 

 

14.3.3 Constructional 

requirements 

 

14.3.3.1 

Clearances and creepage distances comply with 
clause 13 

See appended table. 

14.3.3.2 

Transformers meet the constructional requirements 

See appended table. 

14.3.4.1 

Class II transformers have adequate separation 
between hazardous live parts and accessible parts 
(double or reinforced insulation) 

Double or reinforced  
insulation between primary 
and secondary windings 
according to clause 8.8. 
See attachment, Tables to 
EN/IEC 60065 7

th

 edition. 

 

Coil formers and partition walls > 0,4 mm 

The bobbin fulfils the  
requirement of reinforced  
insulation;  
bobbin thickness > 0.4 mm 

14.3.4.2 

Class I transformers, with basic insulation and 
protective screening only if all 7 conditions of 14.3.4.2 
are met 

Class II apparatus. No such 
transformer used. 

14.3.4.3 

Separating transformers with at least basic insulation 

 

14.3.5.1 

Class II transformers have adequate insulation 
between hazardous live parts and accessible parts 
(double or reinforced insulation) 

Double or reinforced  
insulation between hazardous 
live windings and accessible 
conductive parts.