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參數資料
| 型號： | 70IMX7-2424-8XC |
| 元件分類： | 電源模塊 |
| 英文描述： | 2-OUTPUT 7 W DC-DC REG PWR SUPPLY MODULE |
| 文件頁數： | 7/13頁 |
| 文件大小： | 274K |
| 代理商： | 70IMX7-2424-8XC |
Rugged Environment
DC-DC Converters <40 W
IMX 7-Family
Edition 2/96 - Melcher AG
6 - 19
MELCHER
The Power Partners.
6.1
Safety and Installation Instructions
The converters comply with IEC 950, EN 60950 and
UL 1950 and are designed to meet EN 41003. The unit
should be connected to a secondary circuit.
Isolation
Input to output electric strength tests in accordance with the
safety standards IEC 950, EN 60950, VDE 0805 and
EN 41003 respectively are performed as factory tests and
should not be repeated in the field.
Important Advice
Melcher will not honour any guarantee/warranty claims
resulting from high voltage tests.
Safety
If the output circuit of an IMX-family DC-DC converter is
operator-accessible according to the IEC 950 related safety
standards, it shall be an SELV circuit (Safety Extra Low Volt-
age circuit, i.e. a circuit, separated from mains by at least
basic insulation, that is so designed and protected that un-
der normal and single fault conditions, the voltage between
any two conductors and between any conductor and earth
does not exceed 60 V DC).
In the following table an interpretation is provided of the
IEC 950 safety standard with respect to the safety status of
the output circuit. However, it is the sole responsibility of the
installer or user to assure the compliance with the relevant
and applicable safety standards.
If the table below is observed, the output of any IMX-family
DC-DC converter is considered to be an SELV circuit up to
a nominal output voltage of 30 V (2 x 15 V in series).
Table 5: Insulation concept for SELV circuits
Nominal
Minimum required grade
Maximum
Minimum required
Minimum required grade of
Resulting safety
mains
of isolation, to be
output
safety status of the
isolation between the input
status of the
supply
provided by the AC-DC
voltage
front end output circuit
and the output of the DC-DC
DC-DC converter
voltage
front end, including mains from the
converter, provided by
output circuit
(AC)
supplied battery charger
front end
the converter
≤150 V
Basic
≤60 V
Earthed SELV circuit 1
Operational
SELV circuit
≤121 V
Unearthed hazardous
Supplementary, based on
voltage secondary circuit 2
AC 150 V
≤250 V
Basic
≤60 V
Earthed SELV circuit 1
Operational
Double or reinforced
≤60 V
SELV circuit
Operational
≤121 V
Double or reinforced insu-
Supplementary. based on
lated unearthed hazardous DC 121 V
voltage secondary circuit,
supplying an SELV circuit 2
1 The earth connection has to be provided by the installer according to the relevant safety standard, e.g. IEC 950.
2 Has to be insulated from earth by at least basic insulation according to the relevant safety standard, based on the maximum input
voltage of the DC-DC converter.
Cleaning Agents
In order to avoid possible damage, any penetration of
cleaning fluids is to be prevented, since the power supplies
are not hermetically sealed.
Table 4: Electric strength test voltages and creepage dis-
tances
Characteristics
Input/Output
Output/Output
Unit
20/40 IMX
70 IMX
Electric strength
1.2
1.5
0.1
kVrms
test voltage
1.5
0.15
kV DC
Creepage
1.6
2.0
0.4
mm
distances
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