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| 型號： | SWE15-12FC |
| 英文描述： | Silicon Rectifier Diodes |
| 中文描述： | SCHALTNETZTEIL |
| 文件頁數(shù)： | 12/13頁 |
| 文件大?。?/td> | 431K |
| 代理商： | SWE15-12FC |
SWE Series
AC-DC Converters <40 Watt
Benign Environment
Edition 4/4.99
12/13
MELCHER
The Power Partners.
Standards and approvals
The AC-DC converters correspond to class I equipment
and are UL recognized according to UL 1950, UL recog-
nized for Canada to CAN/CSA C22.2 No. 950-95 and LGA
approved to IEC/EN 60950 standards.
The units have been evaluated for:
Building in,
Basic insulation between input and frame and double or
reinforced insulation between input and output, based on
their maximum input voltage.
Operational insulation between output and frame,
The use in a pollution degree 2 environment,
Connecting the input to an overvoltage category II circuit
if
>
150 V or an overvoltage category III circuit if
≤
150 V.
The AC-DC converters are subject to manufacturing sur-
veillance in accordance with the above mentioned UL,
CSA, EN and with ISO 9001 standards.
Safety of operator accessible output circuit
If the output circuit of an AC-DC converter is operator ac-
cessible, it shall be an SELV circuit according to the IEC/EN
60950 related safety standards
The following table shows a possible installation configura-
tion, compliance with which causes the output circuit of the
AC-DC converter to be an SELV circuit according to IEC/EN
Isolation
The electric strength test is performed as factory test in ac-
cordance with IEC/EN 60950 and UL 1950 and should not
be repeated in the field. Melcher will not honour any guar-
antee claims resulting from electric strength field tests.
Table 9: Isolation
Characteristic
Input to
frame
Input to
output
Output to
frame
Unit
Electric strength
test voltage 1 s
2.0
3.0
1
-
kV
rms
2.8
4.2
1
-
kV DC
Insulation resist.
at 500 V DC
-
>
100
>
100
M
Leckage current
<
15
mA
1
In accordance with IEC/EN 60950 only subassemblies are
tested in factory with this voltage.
Table 10: Safety concept leading to an SELV output circuit
Conditions
AC-DC converter
Installation
Result
Supply voltage
Grade of isolation, provided by the
AC-DC converter
Measures to achieve the resulting
safety status of the output circuit
Safety status of the AC-DC converter
output circuit
Mains
≤
250 V AC
Double or reinforced
Earthed frame
SELV circuit
60950 up to a configured output voltage (sum of nominal
voltages if in series or +/
–
configuration) of 44 V.
However, it is the sole responsibility of the installer to as-
sure the compliance with the relevant and applicable safety
regulations. More information is given in: Technical Infor-
mation:Safety.
AC-DC
con-
verter
Mains
SELV
Earth connection
+
–
~
~
10021
Fuse
Fuse
Fig. 21
Schematic safety concept
Use fuses and earth connection as per: nstallation In-
structions and table: Safety concept leading to an SELV
output circuit.
Table 11: Safety approvals
Safety Approvals
UL 1950
CSA 1402
TüV
1
SWE 05/10/15/30
x
x
x
1
EN 60950
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