Read Harman Kardon HK 3380 (serv.man10) EMC - CB Certificate online
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IEC 60065, 6th edition : 1998
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- Page 9 of 37 -
Order
No.
14649
HEATING
∆
t = ( R2 - R1) x (234,5 + t1) - (t2 - t1)
R1
P
t1 =
22,5 °C
22,5 °C
t2 =
23,1 °C
25,1 °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)
5,13
6,34
60,0
85
Class E
Sub transf. pr. winding (207V)
2789
3162
33,8
85
Class E
Main transf. pr. winding (254,4V)
5,13
6,62
72,0
85
Class E
Sub transf. pr. winding (254,4V)
2789
3338
48,0
85
Class E
Other measured parts
∆
t measured
at 207V
∆
t measured
at 254,4V
∆
t allowed *)
Main transformer core
46,5
55,0
85
Sub transformer core
27,8
37,5
85
Diode, D601 body
45,7
48,7
-
PWB near D601
34,6
37,5
85
PWB near CN63
31,9
36,7
85
Regulator, IC65 heat-sink
28,5
42,6
-
TR, Q319 body
39,3
49,8
-
PWB near Q319
29,3
37,9
85
E. Capacitor, C601 body
19,8
23,2
-
Main
heat-sink
41,9 52,7 -
Power cord bushing
12,4
15,0
60
Top enclosure above main heat-sink
22,6
26,4
40
Top enclosure above main transformer
19,8
23,5
40
Switch
button
0,5 0,5 50
Comments
No other parts were observed to create any hazard due to temperature rise.
P
Test wall condition: 50 cm at top, 10 cm at other side
*) Temperature rise limits for Singapore is 10K less.
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