Read Harman Kardon AVR 435 (serv.man4) EMC - CB Certificate online
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IEC 60065, 6th edition : 1998
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- Page 10 of 38 -
Order
No.
39659
HEATING
∆t = ( R2 - R1) x (234,5 + t1) - (t2 - t1)
R1
R1
P
t1 =
24,7 °C
24,7 °C
t2 =
26,6 °C
25,2 °C
Test voltage
207 V
253 V
Winding
R1/
Ω R2/Ω
∆t measured
∆t allowed *)
Insulation
class
class
Main transf. pr. winding (207V)
1,520
1,896
62,2
85
Class E
Sub transf. pr. winding (207V)
592
692
41,9
85
Class E
Main transf. pr. winding (253V)
1,520
1,953
73,3
85
Class E
Sub transf. pr. winding (253V)
592
732
60,8
85
Class E
Other measured parts
∆t measured
at 207V
at 207V
∆t measured
at 253V
at 253V
∆t allowed *)
Main transformer core
26,4
33,7
85
Sub transformer core
26,1
37,7
85
Diode, D201 body
47,4
54,0
-
PWB near D201
31,7
39,9
85
PWB near D501
29,4
29,3
85
PWB near D502
21,7
24,3
85
Diode, D601 body
13,8
17,3
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PWB near D601
10,8
14,9
85
TR, Q334 body
44,7
58,3
-
PWB near Q334
41,8
56,1
85
E. Capacitor, C202 body
27,4
27,6
85°C
E. Capacitor, C505 body
27,0
27,4
85°C
Diode, D505 body
44,7
45,9
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PWB near D505
16,3
16,7
85
IC51 heat-sink
36,2
38,3
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Fan guard
16,5
28,0
60
Main heat-sink
40,6
42,8
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