AVR 355 (serv.man5) - Harman Kardon Audio EMC - CB Certificate (repair manual). Page 9

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108568 
 
 
 
11 FAULT 
CONDITIONS 
 
11.1 
No shock hazard under fault condition 
No electric shock hazard 
under fault conditions.
 
11.2 
Heating under fault condition 
 
 
No hazard from softening solder 
No softening of solder
 
 
Flames extinguish within 10 seconds 
No flames 
 
Soldered terminations not used  as protective 
mechanism 
No protective mechanism 
11.2.1 
Measurement of temperature rises 
 
11.2.2 
Temperature rise of accessible parts 
 
11.2.3 
Temperature rise of parts, other than windings, 
providing electrical insulation 
 
 
Temperature rise of printed circuit boards (PCB) 
exceeding the limits of table 3 by max. 100 K for 
max. 5 min 
No exceeding the limits of  
Table 3.
 
 
a) Temperature rise of printed circuit boards 
(PCB) to 20.1.3, exceeding the limits of table 3 by 
not more than 100 K for an area not greater than 
2 cm² 
 
N/A 
 
b) Temperature rise of printed circuit boards 
(PCB) to 20.1.3 up to 300 K for an area not greater 
than 2 cm² for a maximum of 5 min 
 
N/A 
 
14 COMPONENTS 
 
14.5 Protective 
devices 
 
 
Protective devices used within their ratings 
Approved fuses and  
thermal links.
 
 
External clearances and creepage distances meet 
requirement of clause 13 for the voltage across 
the device when opened 
Adequate external clearance 
and creepage distance.
 
14.5.1.1 
a) Thermal cut-outs separately approved 
None.
 
N/A 
 
b) Thermal cut-outs tested as part of the 
submission 
 
N/A 
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