Read Harman Kardon AVR 4550 EMC - CB Certificate online
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IEC 60065, 6th edition : 1998
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- Page 19 of 39 -
Order
No.
200245266
14.3.3-5 Transformer
construction
See below.
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14.3.3.2
Transformers meet the
constructional requirements :
constructional requirements :
See below.
P
Transformer/motor Insulation Insulation
Test Flashover
Creepage
distances
Part No/markings
between
resistance
voltage
Breakdown
and clearances
M Ohm
kV(60)s
voltage kV
Measured
Required
55589450NR
Pr - sec
> 100
3KV(rms)
-
> 7,0 mm
≥≥≥≥
6 mm
Pr - ic
> 100
3KV(rms)
-
> 7,2 mm
≥≥≥≥
6 mm
55643480NR
Pr - sec
> 100
3KV(rms)
-
> 6,6 mm
≥≥≥≥
6 mm
Pr - ic
> 100
3KV(rms)
-
> 6,2 mm
≥≥≥≥
6 mm
Components / construction
(Main transformer)
Windings on two separate bobbins. The bobbins are
placed in an insulating housing with two compartments,
one above the other. Bobbin thickness: > 0,4mm.
placed in an insulating housing with two compartments,
one above the other. Bobbin thickness: > 0,4mm.
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Components / construction
(Sub transformer)
Windings on single bobbins. A wall (2 layers) is provided
between primary and secondary windings. Satisfactory
constructed. Bobbin thickness: > 0,4mm.
between primary and secondary windings. Satisfactory
constructed. Bobbin thickness: > 0,4mm.
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Transformer/mot
or
or
Insulation
Thickness (mm)
Material
Dielectric strength test
Part
No/markings
No/markings
between
X
for each combination of
Number
two (2) layers
55589450NR
Pr - sec
0,80 mm min. x 1
PBT bobbin
Pass *)
Pr - ic
0,80 mm min. x 1
PBT bobbin
Pass *)
55643480NR
Pr - sec
0,50 mm min. x 2
PETP bobbin wall
Pass *)
Pr - ic
0,60 mm min. x 1
66 Nylon bobbin cap.
Pass *)
Pr - ic
0,70 mm min. x 1
PETP bobbin
Pass *)
*) Test voltage: 3000 Vrms.
14.3.4.1
Class II transformers have adequate
separation between hazardous live
windings and windings intended to
be connected to accessible
conductive parts (double or
reinforced insulation)
separation between hazardous live
windings and windings intended to
be connected to accessible
conductive parts (double or
reinforced insulation)
Double or reinforced insulation between primary and
secondary windings according to clause 8.8.
secondary windings according to clause 8.8.
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Coil formers and partition walls
≥
0,4 mm
The bobbin(s) fulfils the requirement of reinforced
insulation, see table above for bobbin thickness.
insulation, see table above for bobbin thickness.
P
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