AVR 445 (serv.man2) - Harman Kardon Audio EMC - CB Certificate (repair manual). Page 41

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 Order 
No. 
72390
 
 
 
14.3.3 
Transformer/motor, constructional requirements 
  
Clearances / Creepage distances
Transformer 
Part No. 
Insulation 
between 
Insulation Res. 
M Ohms 
Test Volt 
kV (60 sec.) 
Measured 
Required 
H03-TXPWMEI92B0R 
Pri. - Sec. 
> 100 
3000Vac 
9,0 / 9,0mm 
4,0 / 5,8mm 
 
Pri. - ic 
> 100 
3000Vac 
8,5 / 8,5mm 
4,0 / 5,0mm 
 
 
 
 
 
 
H03-TXPWMEI45B0R 
Pri. - Sec. 
> 100 
3000Vac 
6,8 / 6,8mm 
4,0 / 5,4mm 
 
Pri. - ic 
> 100 
3000Vac 
6,1 / 6,5mm 
4,0 / 5,0mm 
 
 
 
 
 
 
 
Components / construction 
(H03-TXPWMEI92B0R)
 
Windings on two separate bobbins. The bobbins are placed in 
an insulating housing with two compartments, one above the 
other. Bobbin thickness: > 0,4mm. 
Measured Maximum working voltage: 387Vpeak / 274Vrms 
Components / construction 
(H03-TXPWMEI45B0R)
 
Windings on single bobbins. Center wall (2 layers) is provided 
between primary and secondary windings. Satisfactory 
constructed. Bobbin thickness: > 0,4mm. 
Measured Maximum working voltage: 374Vpeak / 264Vrms 
Transformer 
Part No 
Insulation 
Between 
Thick (mm) 
X Number 
Material 
Dielectric strength test 
60 sec. 
H03-TXPWMEI92B0R 
Pr - sec 
0,80 mm min. x 1 
PBT bobbin 
1 layer tested - Pass  *) 
 
Pr - ic 
0,80 mm min. x 1 
PBT bobbin 
1 layer tested - Pass  *) 
 
 
 
 
 
H03-TXPWMEI45B0R 
Pr - sec 
0,40 mm min. x 2 
0,40 mm min. x 1 
PET bobbin wall 
PBT bobbin cap. 
1 layer tested - Pass  *) 
 
Pr - ic 
0,60 mm min. x 1 
PET bobbin 
1 layer tested - Pass  *) 
 
Pr - ic 
0,40 mm min. x 1 
PBT bobbin cap. 
1 layer tested - Pass  *) 
 
 
 
 
 
*) Test voltage: 3000 Vrms. 
 
17.1 
  Torque test to Table 20: 
 
Material 
Screw 
Location / function 
Diameter 
(mm) 
With 
Head 
Without 
Head 
Screw 
Nut 
Torque test (Nm) 
Fulfilled / Remarks 
Fixing of top cover 
(Sides)  
 
Metal 
Metal 
Tested with 1,2Nm, 
5 times / Pass
 
Fixing of top cover 
(Rear)  
 
Metal 
Metal 
Tested with 0,5Nm, 
5 times / Pass
 
 
 
 
 
 
 
 
 
TRF No:  IEC/EN 60065F 
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