Harman Kardon HKTS 7 (serv.man2) EMC - CB Certificate ▷ View online
page 21 of 31
Ref.No.:401597
IEC 60065
Clause
Requirement - Test
Result - Remark
Verdict
TRF No.: I60065__C
7.1
TABLE: temperature rise measurements
P
Power consumption in the OFF/Stand-by
Position of the functional switch (W) ..................... : 0 W in 0FF-position
Operating conditions
254.4V, 1/8 of the max. non-clipping output power using the pink noise signal acc. to 4.1.6 .
Input signal connected to ’Line Level in L/R’
Un (V)
In (A)
Pn (W)
Pout (W)
254.4
0.43
79
21
Loudspeaker impedance (
Ω) ................................ : 4Ω
Several
loudspeaker
systems
-
Marking of loudspeaker terminals
High Level in/out
monitored point:
dT (K)
Permitted dT (K)
Supply wiring insulation (Not under mechanical stress.)
27
60
Mains switch
26
60
Mains fuse
19
60
Iron core mains transformer.
51
—
Transformer support (rubber)
51
60
PCB 63
85
Buttons (plastic)
18
50
Enclosure (wood)
24
60
Enclosure (metal) near knobs.
38
40
Heat Sink, external (metal)
40
40
Knobs (plastic)
18
50
Winding temperature rise measurements
Ambient temperature t1 (ºC) ................................. : 21
Ambient temperature t2 (
°C) ................................. : 22
temperature rise dT of winding:
R
1
(
Ω)
R
2
(
Ω)
dT (K)
permitted
dT (K)
insulation
class
Transformer Primary winding
9.267
11.498
61
85
E
Transformer Secondary winding (Yellow)
0.701
0.855
55
85
E
Transformer Secondary winding (Red)
1.252
1.528
55
85
E
page 22 of 31
Ref.No.:401597
IEC 60065
Clause
Requirement - Test
Result - Remark
Verdict
TRF No.: I60065__C
7.2
TABLE: softening temperature of thermoplastics
P
temperature T of part
T - normal
conditions (ºC)
T - fault
conditions (ºC)
T softening
(ºC)
Prim. Fuse holder
<150
<150
202
10.3
TABLE: insulation resistance measurements
P
insulation resistance R between:
R (M
Ω)
required R (M
Ω)
Between the poles of the circuit directly connected to the
supply mains.
>10 Min.2
Reinforced insulation.
>10
Min.4
10.3 TABLE:
electric
strength
measurements
P
test voltage applied between:
test voltage (V)
Breakdown
Between the poles of the circuit directly connected to the
supply mains.
2120V peak
No
Reinforced insulation.
4240V peak
No
page 23 of 31
Ref.No.:401597
IEC 60065
Clause
Requirement - Test
Result - Remark
Verdict
TRF No.: I60065__C
11.2
TABLE: summary of fault condition tests
P
Voltage (V) 0.9 or 1.06 times rated voltage .......... : 220-240
Ambient temperature (
°C) ..................................... : 22
Winding temperature rise measurements
Ambient temperature t1 (ºC) ................................. : 22
Ambient temperature t2 (ºC) ................................. : 22
No
.
Component
No.
Fault Test voltage
(V)
Test
time
Fuse No.
Fuse
current
(A)
Result
1 Max.
non-
clipping
output
power
(pink noise)
-- 254.4 4h
Mains
fuse
0.55
Pn= 104W, In= 0.55A.
Transf. prim. winding dT = 78K
Transf. sec. windings dT = 68-
72K
Enclosure (metal) = 44K
Heat sink (exterior) = 48K
No remarks.
2 Q105 sc 254.4 -- Mains
fuse
>2.6A
Q107 and Q108 broke, mains
fuse opened immediately.
No remarks.
3 Q107 sc 254.4 -- Mains
fuse
>2.6A
Q107 and Q108 broke, mains
fuse opened immediately.
No remarks.
4 C133 sc 198
-- Mains
fuse
>2.6A
Mains fuse opened immediately.
No remarks.
5 D115
( - )
sc 198 --
Mains
fuse
>2.6A
Mains fuse opened immediately.
No remarks.
6 D110
( - )
sc 198 --
Mains
fuse
>2.6A
Mains fuse opened immediately.
No remarks.
page 24 of 31
Ref.No.:401597
IEC 60065
Clause
Requirement - Test
Result - Remark
Verdict
TRF No.: I60065__C
No
.
Component
No.
Fault Test voltage
(V)
Test
time
Fuse No.
Fuse
current
(A)
Result
7 C122 sc 198 3min.
Mains
fuse
≤2.5A Pn = 525-0W, In = 2.5-0A
After 2min. conductors on the
PCB were interrupted, rectifier
D110 broke and mains fuse
opened.
No remarks.
(See next fault case)
8 C122 sc 198
3s Mains
fuse
3.4A
Pn = 640W, In = 3.4A.
Interrupted conductors were
bridged and mains fuse replaced
with T2.5AL:
Original fuse T1.25AL considered
opened due to the high In; test
aborted after 3s.
No remarks.
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