Read Harman Kardon AVR 3550 (serv.man13) EMC - CB Certificate online
-
IEC 60065, 6th edition : 1998
-
- Page 9 of 40 -
Order No.
200219130
HEATING
∆
t = ( R2 - R1) x (234,5 + t1) - (t2 - t1)
R1
P
t1 =
26,0 °C
26,0 °C
t2 =
28,1 °C
26,3 °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)
2,997
3,820
69,4
95
Class B
Sub transf. pr. winding (207V)
2655
3148
46,3
85
Class E
Main transf. pr. winding (254,4V)
2,997
3,960
83,4
95
Class B
Sub transf. pr. winding (254,4V)
2655
3288
61,8
85
Class E
Other measured parts
∆
t measured
at 207V
∆
t measured
at 254,4V
∆
t allowed *)
Main transformer core
59,0
71,5
95
Sub transformer core
45,0
57,4
85
Diode, D909 body
48,4
55,4
-
PWB near D909
45,7
52,4
85
Capacitor, C915 body
25,6
30,5
-
Capacitor, C917 body
34,2
43,1
-
Capacitor, C923 body
38,0
45,4
-
IC91 body
47,0
67,9
-
IC91 heat-sink
44,3
62,7
-
Power TR, Q661 body
57,5
74,3
-
PWB near Q661
51,8
65,4
85
Bias TR, Q611 body
51,5
65,7
-
Resistor, R654 body
36,4
43,1
-
Main heat-sink
51,9
65,8
-
Power cord bushing
25,4
29,9
60
Top enclosure above main transformer
27,0
32,9
65 **)
Top enclosure above main heat-sink
24,6
31,3
65 **)
Power switch button
1,3
0,6
50
Click on the first or last page to see other AVR 3550 (serv.man13) service manuals if exist.