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參數(shù)資料
| 型號(hào)： | 12H1501-7RD4 |
| 廠商： | POWER-ONE INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 50 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | METAL, CASE H02, MODULE |
| 文件頁(yè)數(shù)： | 6/19頁(yè) |
| 文件大小： | 356K |
| 代理商： | 12H1501-7RD4 |
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H Series Data Sheet
50 Watt DC-DC Cassette Converters
REV. MAR 27, 2006
Page 14 of 19
www.power-one.com
Table 15: Safety concept leading to a SELV output circuit
Conditions
Front end
DC-DC converter
Result
Nominal
Minimum required grade
Nominal DC output Minimum required
Measures to achieve the
Safety status
supply
of isolation, to be provided voltage from the
safety status of the
specified safety status of
of the DC-DC
voltage
by the AC-DC front end,
front end
front end output
the output circuit
converter
including mains supplied
circuit
output circuit
battery charger
Mains
Operational (i.e. there is
-400 V 1 (The
Primary circuit
Double or reinforced insulation,
SELV circuit
-250 VAC
no need for electrical
rated voltage
based on 250 VAC and 400 VDC
isolation between the
between any input
(provided by the DC-DC converter)
mains supply voltage and
pin and earth can
and earthed case 2
the DC-DC converter
be up to 250 VAC
input voltage)
or 400 VDC)
-400 V
Unearthed
Supplementary insulation, based
hazardous voltage
on 250 VAC and 400 VDC, and
secondary circuit
double or reinforced insulation
based on the maximum nominal
output voltage from the front end
(both provided by the DC-DC con-
verter) and earthed case 3
1 The front end output voltage should match the specified operating input voltage range of the DC-DC converter.
2 The earth connection has to be provided by the installer according to the relevant safety standard, e.g. IEC/EN 60950.
3 The earth connection has to be provided by the installer according to the relevant safety standard, e.g. IEC/EN 60950. If the converter
case shall not be connected with earth, the front end output circuit has to be insulated from earth according to the relevant safety
standard by at least basic insulation, based on the maximum nominal output voltage from the front end, and insulated from the
converter case by at least supplementary insulation, based on the maximum nominal mains voltage. The converter case is then
considered to be a double-insulated accessible part.
Fig. 14
Schematic safety concept.
Use earth connection as per table:
Safety concept leading
to a SELV output circuit. Use fuse according to: Installation
Instructions.
Safety of operator accessible output circuit
If the output circuit of a DC-DC converter is operator
accessible, it shall be a SELV circuit according to the IEC/
EN 60950 related safety standards.
Since the H series DC-DC converters provide double or
reinforced insulation between input and output, based on a
rated primary input voltage of 250 VAC and 400 VDC only
operational insulation is needed between the AC mains and
the input of the DC-DC converter. This means that there is
no need for an electrical isolation between the AC mains
circuit and the DC-DC converter input circuit to cause the
output of an H series DC-DC converter to be a SELV circuit.
Only voltage adaptation and rectification to the specified
input voltage range of the DC-DC converter is needed.
The following table shows some possible installation
configurations, compliance with which causes the output
circuit of the DC-DC converter to be a SELV circuit
according to IEC/EN 60950 up to a configured output
voltage (sum of nominal voltages if in series or +/–
configuration) of 36 V.
However, it is the sole responsibility of the installer to
assure the compliance with the relevant and applicable
safety regulations. More information is given in:
Technical
Information: Safety.
AC-DC
front
end
DC-DC
con-
verter
Mains
SELV
Earth
connection
+
–
~
10024
Battery
Max. 250 VAC
or ±400 VDC
Max. 250 VAC
or ±400 VDC
Fuse
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