Read Harman Kardon DVD 29 (serv.man3) EMC - CB Certificate online
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Report
No.
89538
14.3.3
Transformer/motor, constructional requirements
P
Transformer
Part No.
Part No.
Insulation
between
between
Insulation Res.
M Ohms
Test Volt
V (60 sec.)
Clearances / Creepage distance
s
Measured
Required
T901
/ CLT9Z021ZE,
or
CLT9Z018ZE
Pri. - Sec. > 100
3KV (rms)
6,0 / 6,0 mm
4,4 / 5,6 mm
- Min. 3,0 mm barrier tape or spacing provided in primary side of the transformer.
- Min. 6,0 mm barrier tape or spacing provided in secondary side of the transformer.
- Min. 6,0 mm barrier tape or spacing provided in secondary side of the transformer.
All of exposed primary winding wires, and outer pins (7, 15) connected exposed secondary winding
wires are covered fully by the 0,25mm min. thick. Teflon tubing (PTFE).
wires are covered fully by the 0,25mm min. thick. Teflon tubing (PTFE).
-
Components / construction
(T901)
Concentric windings on one bobbin. At least 3 layers of
insulation between primary and secondary winding.
Thickness of each layer: 0.025 mm. Test voltage: 3kV
Thickness of each layer: 0.025 mm. Test voltage: 3kV
Max. Working voltage:
540Vpeak / 271Vrms
P
Transformer
Part No
Part No
Insulation
Between
Between
Thick (mm)
X Number
Material
Dielectric strength test
60 sec.
T901
/ CLT9Z021ZE,
or
CLT9Z018ZE
Pr. - Sec.
0,025 mm x 3
Polyester tape
2 layers tested - Pass *)
Pr. - ic
0,50 mm min. x 1
Phenolic bobbin
1 layer tested - Pass *)
Pr. / Sec.
0,25 mm min. x 1
Teflon tube (PTFE)
1 layer tested - Pass *)
*) Test voltage: 3000 Vrms.
17.1
Torque test to Table 20:
P
Screw
Diameter
With
Without
Material
Torque test (Nm)
Location / function
(mm)
Head
Head
Screw
Nut
Fulfilled / Remarks
Fixing of top cover
3
x
Metal
Metal
0,5Nm, 5 times / Pass
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