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SWE Series
AC-DC Converters <40 Watt
Benign Environment
Edition 4/4.99
6/13
MELCHER
The Power Partners.
Electromagnetic Compatibility (EMC)
A metal oxide VDR together with an input fuse and an input
filter form an effective protection against high input tran-
sient voltages which typically occur in most installations,
but especially in battery driven mobile applications. The
SWE series has been successfully tested to the following
specifications:
Electromagnetic Immunity
Table 5: Immunity type tests
Phenomenon
Standard
1
Level
Coupling
mode
2
Value
applied
Waveform
Source
imped.
Test
In
Per-
procedure
oper. form.
3
Electrostatic
discharge
IEC/EN
61000-4-2
x
air discharge
to frame
6000 V
p
1/50 ns
330
10 positive and
10 negative
discharges
yes
4
Electromagnetic
field
IEC/EN
61000-4-3
x
antenna in
1 m distance
10 V/m
sine wave modu-
lated w. 1 kHz
26
…
1000 MHz
yes
4
Electrical fast
transient/burst
IEC/EN
61000-4-4
x
i/c, +i/
–
i
2000 V
p
5/50 ns
50
1 min positive
1 min negative
transients per
coupling mode
yes
4
Surge
IEC/EN
61000-4-5
x
i/c
2000 V
p
1.2/50
μ
s
12
5 pos. and 5 neg.
surges per
coupling mode
yes
4
1
Related and previous standards are referenced in: Technical Information: Standards
2
i = input, o = output, c = case.
3
A = Normal operation, no deviation from specifications, B = Temporary deviation from specs possible.
4
Normal operation, no deviation from specifications.
Fig. 4
Typical disturbance voltage (quasi-peak) at the input accord-
ing to CISPR 11/22 and EN 55011/22, measured at U
i nom
and I
o nom
. e.g. SWE 05-05FC
90
80
70
60
50
40
30
20
10
0
0
0
0
0
1
5
1
2
3
[dB
μ
V]
MHz
0
07073
A
B
90
80
70
60
50
40
30
20
10
0
0
0
0
0
1
5
1
2
3
[dB
μ
V]
MHz
0
07074
A
B
Fig. 5
Typical disturbance voltage (quasi-peak) at the input accord-
ing to CISPR 11/22 and EN 55011/22, measured at U
i nom
and I
o nom
. e.g. SWE 10-05FC
Electromagnetic Emissions