AVR 355 (serv.man6) - Harman Kardon Audio EMC - CB Certificate (repair manual). Page 54

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Report No.  98388 
 
 
14.3.3 
Transformer/motor, constructional requirements 
Transformer 
Part No. 
Insulation 
between 
Insulation Res.
M Ohms 
Test Volt 
kV (60 sec.)
Clearances / Creepage distances
Measured 
Required 
KLT (or CLT) 5W033ZE 
Pri. - Sec. 
> 100 
3000Vac 
10,4 / 10,4 mm 
4,0 / 5,6 mm 
Pri. - ic. 
> 100 
3000Vac 
10,3 / 10,3 mm 
4,0 / 5,0 mm 
 
 
 
 
 
 
KLT ( or CLT) 5J039ZE 
Pri. - Sec. 
> 100 
3000Vac 
8,9 / 8,9 mm 
4,0 / 5,0mm 
Pri. - ic. 
> 100 
3000Vac 
8,3 / 8,3 mm 
4,0 / 5,0mm 
 
Components / construction 
KLT (or CLT) 5W033ZE
 
Windings on two separate bobbins.  The bobbins are  
placed in an insulating housing with two compartments, 
one above the other.  Bobbin thickness: > 0,4 mm 
Measured max. working voltage: 375Vpeak/265Vrms 
Components / construction 
KLT ( or CLT) 5J039ZE
 
Windings on single bobbins.  Center wall (2 layers) is 
provided between primary and secondary windings. 
Satisfactory constructed.  Bobbin thickness: > 0,4 mm 
Measured max. working voltage: 354Vpeak/250Vrms 
Transformer 
Part No 
Insulation 
Between 
Thick (mm) 
X Number 
Material 
Dielectric strength test 
60 sec. 
KLT (or CLT) 5W033ZE 
Pr - sec 
0,9 mm min x 1 
PET bobbin 
Pass *) 
Pr - ic 
0,9 mm min x 1 
PET bobbin 
Pass *) 
 
 
 
 
 
KLT ( or CLT) 5J039ZE 
Pr - sec 
0,7 mm min. x 2 
0,5 mm min. x 1 
PBT bobbin wall 
PBT bobbin cap. 
Pass *) 
Pr - ic 
0,7 mm min. x 1 
PBT bobbin 
Pass *) 
Pr - ic 
0,5 mm min. x 1 
PBT bobbin cap. 
Pass *) 
*) Test voltage: 3000Vrms 
 
17.1 
Torque test to Table 20: 
Screw 
Diameter 
With 
Without
Material 
Torque test (Nm) 
Location / function 
(mm) 
Head 
Head 
Screw 
Nut 
Fulfilled / Remarks 
Fixing of top cover 
(sides) 
4,0 x  - 
Metal Metal 
Tested with 1,2Nm,  
5 times / Pass 
Fixing of top cover 
(rear) 
3,0 x  - 
Metal Metal 
Tested with 0,5Nm,  
5 times / Pass 
 
 
 
 
 
 
 
 
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