Read Harman Kardon HK 3390 EMC - CB Certificate online
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Report
No.
98502
Measured at 1/8 of maximum non-clipped output;
Monitored point:
dT (K) at
253V, 50Hz
dT (K) at
198V, 50Hz
dT (K) at
253V, 60Hz
dT (K) at
198V, 60Hz
Limit dT (K)
*)
Main transformer core
67,4
56,7
63,3
53,0
95
Sub transformer core
42,9
30,2
39,7
28,6
85
E-capacitor, C116 body
25,9
22,5
25,3
21,3
85
°C
D113
body
62,3 57,2 60,3 55,2 -
PWB near D113
43,1
38,7
41,8
36,8
95
D113
heat-sink
57,3 52,9 55,6 51,0 -
Q319
body
78,1 57,6 77,0 55,5 -
PWB near Q319
58,9
44,3
58,1
42,9
95
IC12
body
49,5 29,3 49,4 27,9 -
PWB near IC12
41,1
27,8
41,6
26,4
95
IC12
heat-sink
45,5 27,8 45,3 26,4 -
E-capacitor, C121 body
23,0
18,6
22,7
18,2
85
°C
Main
heat-sink
63,9 48,2 62,8 46,6 -
Bushing
18,5 16,0 17,7 14,7 50
Top enclosure above transformer
26,1
22,7
25,6
20,9
40
Top enclosure above main heat-sink
40,4
31,9
39,4
30,1
65 **)
Power switch knob (Non-metallic)
10,3
9,4
9,9
8,3
50
Front panel (metallic)
7,9
6,6
8,2
5,7
40
Standby button (Non-metallic)
6,0
5,4
6,3
4,4
50
*) Temperature rise limits for Singapore is 10K less
**) Directly covering part for main heat-sink. The top cover is supplied with ventilation openings covering
most of the top cover. This indicates emission of heat from internal parts and the opening area is
therefore not likely to be touched during normal use.
Winding temperature rise
measurements
measurements
253V,
50Hz
198V,
50Hz
253V,
60Hz
198V,
60Hz
—
Ambient temperature t1 (
o
C) :
26,1 26,1 26,1 26,1
—
Ambient temperature t2 (
o
C) :
22,7 24,7 23,6 24,2
—
Temperature rise dT of winding:
R
1
(Ω)
R
2
(Ω)
dT (K)
Limit dT (K)
*)
Insulation
class
Main transf. primary winding (253V, 50Hz)
5,30 6,84 79,1 95 B
Sub transf. primary winding (253V, 50Hz)
2883 3384 48,7 85
E
Main transf. primary winding (198V, 50Hz)
5,30 6,63 66,8 95 B
Sub transf. primary winding (198V, 50Hz)
2883 3193 29,4 85
E
Main transf. primary winding (253V, 60Hz)
5,30 6,75 73,8 95 B
Sub transf. primary winding (253V, 60Hz)
2883 3325 42,5 85
E
Main transf. primary winding (198V, 60Hz)
5,30 6,52 61,9 95 B
Sub transf. primary winding (198V, 60Hz)
2883 3185 29,2 85
E
*) Temperature rise limits for Singapore is 10K less
Click on the first or last page to see other HK 3390 service manuals if exist.