Read Harman Kardon HD 970 (serv.man7) EMC - CB Certificate online
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Report No. JSH0503351-001
IEC/EN 60065
Clause
Requirement – Test
Result - Remark
Verdict
TRF No: IECEN60065F
TRF originator BEAB
Monitored point:
dT (K)
207V/ 253V
Limit dT (K)
Enclosure outside
7.0
11.2
30
For tropical climates, permissible temperature rises of 10 K less than those specified in table 3.
Winding temperature rise measurements
Pass
Ambient temperature t1 (
o
C) .............................. : 21.2
—
Ambient temperature t2 (
o
C) .............................. : 21.5
—
Temperature rise dT of winding:
R
1
(O)
R
2
(O)
dT (K)
Limit dT (K) Insulation
class
Transformer primary winding
59
67.6
37.0
75
--
Transformer secondary winding (yellow wire)
1.000
1.136
34.5
75
--
7.2
TABLE: softening temperature of thermoplastics
Pass
Temperature T of part
T - normal condi-
tions (
o
C)
T - fault condi-
tions (
o
C)
T softening
(
o
C)
Terminal connector JP2
49.2
--
150
Transformer bobbin
42.4
--
150
10.3
TABLE: insulation resistance measurements
Pass
Insulation resistance R between:
R (MO)
Required R (MO)
Between mains poles (primary fuse disconnected) (BI)
>100
2
L/N – metal enclosure part (RI)
>100
4
L/N – Audio/ output terminal (RI)
>100
4
Main transformer T1 primary winding – core (RI)
>100
4
Transformer primary winding – secondary winding (RI)
>100
4
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