Read Harman Kardon AVR 505 (serv.man13) EMC - CB Certificate online
-
IEC 60065, 6th edition : 1998
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- Page 10 of 37 -
Order
No.
11151
HEATING
∆
t = ( R2 - R1) x (234,5 + t1) - (t2 - t1)
R1
P
t1 =
25,0 °C
25,0 °C
t2 =
26,3 °C
27,4 °C
Test voltage
207 V
254,4 V
Winding
R1/
Ω
R2/
Ω
∆
t measured
∆
t allowed *
Insulation
class
class
Main transf. pr. winding (207V)
3,54
4,26
51,5
85
Class E
Sub transf. pr. winding (207V)
2918
3296
32,3
85
Class E
Main transf. pr. winding (254,4V)
3,54
4,41
61,4
85
Class E
Sub transf. pr. winding (254,4V)
2918
3473
47,0
85
Class E
Other measured parts
∆
t measured
at 207V
∆
t measured
at 254,4V
∆
t allowed *
Main transformer core
44,0
52,1
85
Sub transformer core
29,5
39,5
85
Diode, D991 body
44,9
48,8
-
Diode, D992 body
39,8
43,3
-
D991
heat-sink
49,6 53,7 -
PWB near D991
41,5
45,6
85
TR, Q657 body
43,6
55,5
-
TR, Q661 body
28,9
37,1
-
TR, Q857 body
44,0
55,7
-
PWB near Q661
42,4
54,2
85
E. Capacitor, C909 body
20,8
24,2
-
E. Capacitor, C929 body
27,4
33,4
-
IC91
body
39,1 50,5 -
Resistor, R656 body
28,7
33,4
-
Main
heat-sink
47,2 59,1 -
Power cord bushing
24,2
27,1
60
Top enclosure above main transformer
16,1
19,4
40
Top enclosure above main heat-sink
28,9
36,9
65 **
Power switch button
0,9
1,0
50
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