Read JBL ES 250P (serv.man4) EMC - CB Certificate online
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Report No. 707218
IEC 60065
Clause
Requirement – Test
Result - Remark
Verdict
TRF No.: IEC60065F
TRF Originator: ASTA BEAB
7.1
TABLE: temperature rise measurements: Conditions
Test performed with Mains transformer type TT0930505270-E
Test performed with Mains transformer type TT0930505270-E
P
Power consumption in the OFF/Stand-by mode of
the functional switch (W)………..….:…………....:
the functional switch (W)………..….:…………....:
0W / No stand-by mode
P
Cond.
Un (V)
Hz
In (A)
Pn (W)
V out
Pout (W)
Operating Condition
1
198
50
0.28
38
10
25
2
253
50
0.32
43
13
42
1/8 of max non-clipping output
power (pink noise).
LFE mode.
power (pink noise).
LFE mode.
Loudspeaker impedance (
Ω) ................................. :
4
Ω
—
Several loudspeaker systems
—
Marking of loudspeaker terminals
-
—
Temperature Rise dT of Part
dT (K)
Limit max dT (K)
Test Condition No.
No 2
No ___
No ___
Transformer steel washer
24
--
Supply wiring insulation
(not under mechanical stress)
(not under mechanical stress)
17
60 (50)
Heat sink supported by PCB
37
85 (75)
PCB (D123)
36
85 (75)
Rear panel outside of heat sink
(metal, likely to be touched)
(metal, likely to be touched)
25
40 (30)
Rear Enclosure (wood)
7
60 (50)
Knobs (plastic)
<15
50 (40)
27
--
Winding temperature rise measurements
Ambient temperature t1 (
o
C) ................................
Ambient temperature t2 (
o
C) ................................
23
23
—
—
—
—
Temperature rise dT of winding:
dT = (R
2
– R
1
) x (234.5 + t1) – (t2 – t1)
R
1
R
1
(
Ω)
R
2
(
Ω)
dT (K)
Limit
maxK)
Insulation class
Mains transformer primary wiring
4.642
5.143
28
85 (75)
E
Secondary wiring, yellow – black
0.222
0.245
27
85 (75)
E
Secondary wiring, red – black
0.548
0.605
27
85 (75)
E
The limit values in parenthesis are the limit values for tropical climate.
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