DSC 1000 - JBL Audio EMC - CB Certificate (repair manual). Page 11

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Page 10 of 53 
  Report No: JSH0406745-001.  
IEC 60065 
Clause 
Requirement - Test 
Result - Remark 
Verdict 
 
 
Creepage distances in accordance with 13.4 
Between TR1 primary winding 
and secondary winding in 
transformer 5.6mm required. 
(400V r.m.s., margin tape and 
insulating tape material group 
II ) 
Between TR2 primary winding 
and secondary winding in 
transformer 5.6mm required. 
(392V r.m.s., margin tape and 
insulating tape material group 
II ) 
Between TR1 primary winding 
leader and secondary on PCB 
track 5.6mm required (400V 
r.m.s., PCB material group II). 
Between TR2 primary winding 
leader and secondary on PCB 
track 5.6mm required (392V 
r.m.s., PCB material group II). 
Other PCB tracks between 
primary and secondary 4.0mm 
required (264V r.m.s., PCB 
material group II). 
13.2 
Determination of operating voltage 
 
13.3 
Clearances 
 
13.3.2 
Circuits conductively connected to the mains 
comply with table 8 and, where applicable, table 9 
Between primary and 
secondary: minimum 6.0 mm 
on PCB track 
Different polarity conductively 
connected to the mains: 
minimum 3.5mm on PCB track 
13.3.3 
Circuits not conductively connected to the mains 
comply with table 10 
Such circuits are secondary 
circuit and do not include 
hazardous voltage, no basic, 
supplementary or reinforced 
insulation required. 
13.4 
Creepage distances 
Between primary and 
secondary on PCB track 
minimum 6.0mm. 
 
Creepage distances greater than table 11 minima   
13.5 
Printed boards 
 
13.5.1 
Clearances and creepage distances between 
conductors on printed circuit boards, one of which 
may be conductively connected to the mains, as in 
fig. 10 
 
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