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參數(shù)資料
| 型號(hào)： | LOR1601-2 |
| 廠商： | POWER-ONE INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 2-OUTPUT 30 W AC-DC REG PWR SUPPLY MODULE |
| 文件頁數(shù)： | 7/7頁 |
| 文件大?。?/td> | 270K |
| 代理商： | LOR1601-2 |
DIN-Rail Mountable
AC-DC Converters
O Series
Edition 3/4.2000
7/7
Standards and approvals
LOS and LOR AC-DC converters correspond to class II
equipment. All types are UL recognized according to UL
1950, UL recognized 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
Double or reinforced insulation between input and out-
put, based on 250 V AC
The use in a pollution degree 2 environment
Connecting the input to a primary circuit with a maximum
transient rating of 2500 V (overvoltage category III based
on a 110 V primary circuit, overvoltage category II based
on a 230 V primary circuit).
The AC-DC converters are subject to manufacturing sur-
veillance in accordance with the above mentioned UL,
CSA, EN and with ISO 9001 standards.
Isolation
The electric strength test is performed as a factory test in
accordance with IEC/EN 60950 and UL 1950 and should
not be repeated in the field. Melcher will not honour any
guarantee/warranty claims resulting from electric strength
field tests.
Table 10: Isolation
Characteristic
Input to
Unit
output
Electric strength
Required according to
3.0
kVrms
test voltage
IEC/EN 60950
4.2
kV DC
Actual factory test 2 s
3.0
kVrms
Typical coupling capacitance
2.4
nF
Insulation resistance at 500 V DC
>300
M
1 For creepage distances and clearances refer to: Technical
Information: Safety.
Leakage Current in AC-DC operation
Leakage currents flow due to internal leakage capacitance
and RFI suppression Y-capacitors. The current values are
proportional to the mains voltage and nearly proportional to
the mains frequency and are specified at an input voltage of
230 V (50 Hz).
Under test conditions, the leakage current flows through a
measuring instrument (MI) as described in fig.:
Measuring
instrument (MI) for earth leakage current tests according to
IEC/EN 60950 which takes into account earth impedance
and sensitivity of a person touching unearthed accessible
parts. The current value is calculated by dividing the meas-
ured voltage by 500
. If inputs and outputs of LOS/LOR-
units are connected in parallel, their individual leakage cur-
rents are added.
V
MI
500
1500
10 k
220 nF
22 nF
10061
Fig. 9
Measuring instrument (MI) for earth leakage current tests
according to IEC/EN 60950.
Fig. 8
Test set-up for class II equipment.
Table 11: Leakage currents
Characteristic
Unit
Output
Permissible according
0.25
mA
leakage current
to IEC/EN 60950
Typical value at 230 V, 50 Hz
0.14
Safety of operator accessible output circuit
If the output circuit of an AC-DC converter is operator
accessible, 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 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 as-
sure the compliance with the relevant and applicable safety
regulations. More information is given in:
Technical Infor-
mation: Safety.
Table 12: Safety concept leading to an SELV output circuit
Conditions
AC-DC converter
Installation
Result
Supply voltage
Grade of isolation between input
Measures to achieve the resulting
Safety status of the AC-DC converter
and output, provided by the AC-DC
safety status of the output circuit
output circuit
converter
Mains
≤250 V AC Double or reinforced
Installation according to the
SELV circuit
applicable standards
AC-DC
con-
verter
Mains
SELV
+
–
~
10084
Fig. 10
Schematic safety concept
Use fuse(s) as per:
Installation Instructions.
MI for output
leakage current
Vo+
Vo–
N
L
10040
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