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參數資料
| 型號： | CS2540-7ERD4TB2 |
| 元件分類： | 電源模塊 |
| 英文描述： | 2-OUTPUT 100 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | METAL, CASE S02, MODULE |
| 文件頁數： | 17/31頁 |
| 文件大小： | 633K |
| 代理商： | CS2540-7ERD4TB2 |
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Cassette Style
100 Watt DC-DC Converters
S Series
Edition 1/01.2000
24/31
Table 14: Safety concept leading to an SELV output circuit
Conditions
Front end
DC-DC converter
Result
Nominal
Minimum required grade
Nominal DC
Minimum required
Type
Measures to achieve the
Safety status
supply
of insulation, to be pro-
output voltage
safety status of the
specified safety status of
of the DC-DC
voltage
vided by the AC-DC front
from the front
front end output
the output circuit
converter
end,including mains
end 1
circuit
output circuit
supplied battery charger
Mains
Operational (i.e. there is
≤100 V (The
Primary circuit
AS,
Double or reinforced
SELV circuit
≤150 V AC no need for electrical
nominal voltage
BS,
insulation, based on
insulation between the
between any input
the mains voltage and
mains supply voltage
pin and earth can
based on the maximum
and the DC-DC converter
be up to 150 V AC
nominal output voltage
input voltage)
or DC)
from the front end (pro-
Mains
≤400 V (The
CS,
vided by the DC-DC
≤250 V AC
nominal voltage
DS,
converter) and earthed
between any input
ES,
case 3
pin and earth can
FS
be up to 250 V AC
or 400 V DC)
Basic
≤400 V
Unearthed
AS,
Supplementary insulation,
hazardous voltage
BS,
based on 250 V AC and
secodary circuit
CS
double or reinforced
DS,
insulation 2 (provided by
ES,
the DC-DC converter)
FS
and earthed case 3.
Earthed
Double or reinforced
hazardous voltage
insulation 2 (provided by
secondary circuit
the DC-DC converter)
and earthed case 3
Double or reinforced
≤60 V
SELV circuit
Operational insulation
(provided by the DC-DC
converter) 4
≤120 V
TNV-3 circuit
Basic insulation 2 (pro-
vided by the DC-DC
converter) 4
1 The front end output voltage should match the specified input voltage range of the DC-DC converter.
2 Based on the maximum nominal output voltage from the front end.
3 The earth connection has to be provided by the installer according to the relevant safety standard, e.g. IEC/EN 60950.
4 Earthing of the case is recommended, but not mandatory.
Fig. 24
Schematic safety concept
Use earth connection as per table:
Safety concept leading
to an SELV output circuit. Use fuse if required by the ap-
plication. See also:
Installation Instructions.
AC-DC
front
end
DC-DC
con-
verter
Mains
Battery
SELV
Earth connection
+
–
~
10022
Max. 150 V AC or DC for AS, BS
Max. 250 V AC or 400 V DC for CS, DS, ES, FS
Fuse
Max. 150 V AC or DC for AS, BS
Max. 250 V AC or 400 V DC for CS, DS, ES, FS
Safety of Operator Accessible Output Circuit
If the output circuit of a DC-DC converter is operator acces-
sible, it shall be an SELV circuit according to the IEC/EN
60950 related safety standards
The following table shows some possible installation con-
figurations, compliance with which causes the output circuit
of the DC-DC converter to be an SELV circuit according to
IEC/EN 60950 up to a configured output voltage (sum of
nominal voltages if in series or +/– configuration) of 35 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.
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