AVR 7500 (serv.man9) - Harman Kardon Audio EMC - CB Certificate (repair manual). Page 25

 

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IEC 60065, 6th edition : 1998

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- Page 21 of 43 - 

 

 

   

 

Order No. 

200211175

 

 

 

 

14.3.4.1 

Class II transformers have adequate 
separation between hazardous live 
windings and windings intended to 
be connected to accessible 
conductive parts (double or 
reinforced insulation)   

Double or reinforced insulation between primary and 
secondary windings according to clause 8.8. 
 

 

Coil formers and partition walls 

≥

 0,4 mm   

The sub-transformer bobbin fulfils the requirement of 
reinforced insulation, see table above for bobbin 
thickness. 

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   

 

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. 

 

Coil formers and partition walls 

≥

 0,4 mm   

The sub-transformer bobbin fulfils the requirement of 
reinforced insulation, see table above for bobbin 
thickness. 

14.3.5.2 

Class I transformers have adequate 
insulation between hazardous live 
parts and accessible conductive 
parts or those conductive parts or 
protective screens connected to a 
protective earth terminal   

 

 

Winding wires connected to 
protective earth have adequate 
current-carrying capacity   

 

14.4 

High voltage components 

 

 

 

High-voltage components and 
assemblies: U > 4 kV (peak) 
separately approved   

No high voltage components used 
 

 

Component meets category FV 1 of 
IEC 60 707   

 

14.4.1 

High voltage transformers and 
multipliers tested as part of the 
submission   

 

14.5 

Protective devices 

 

 

 

Protective devices used within their 
ratings   

Thermal cut-out and fuses