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參數(shù)資料
| 型號： | LOK4740-2RLD |
| 廠商： | POWER-ONE INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 50 W AC-DC REG PWR SUPPLY MODULE |
| 封裝： | ROHS COMPLIANT |
| 文件頁數(shù)： | 12/12頁 |
| 文件大?。?/td> | 329K |
| 代理商： | LOK4740-2RLD |
BCD20035-G Rev AA, 25-Feb-09
Page 9 of 12
www.power-one.com
LOS, LOR, LOK4000 Series Data Sheet
DIN-Rail Mountable AC-DC (DC-DC) Converters
Installation Instructions
These converters are components, intended exclusively for
inclusion within other equipment by an industrial assembly
operation or by professional installers. Installation must strictly
follow the national safety regulations in compliance with the
enclosure, mounting, creepage, clearance, casualty, markings
and segregation requirements of the end-use application.
Connection to the system shall be according to Terminal
allocation
and Mechanical Data. Check for hazardous voltages
before altering any connection.
Ensure that a converter failure (e.g. by an internal short-circuit)
does not result in a hazardous condition. See also Safety of
operator accessible output circuit
.
The phase input (L ) is internally fused by a 1.6 A slowblow
type. It is not customer-accessible. This fuse is designed to
protect the unit in case of overcurrent. Option F or external
fuses in the wiring to one or both input lines (L and/or N )
may therefore be necessary to ensure compliance with local
requirements.
A second fuse in the wiring to the terminal N is needed if:
Local requirements demand an individual fuse in each
source line
Neutral and earth impedance is high or undefined
Phase and neutral of the mains are not defined or cannot be
assigned to the corresponding termials (L to phase and
N
to neutral).
Note:
Do not open the converters, or guarantee will be
invalidated.
Make sure that there is sufficient air flow available for
convection cooling. This should be verified by measuring the
case temperature when the unit is installed and operated in the
end-use
application.
The
maximum
specified
case
temperature TC max shall not be exceeded.
Note:
The converters are designed for vertical mounting on a
DIN-rail. If a converter is operated as well in a horizontal
position, the measuring point TC should be located on the top.
Isolation
The electric strength test is performed in the factory as routine
test in accordance with EN 50116 and IEC/EN 60950 and
should not be repeated in the field. Power-One will not honor
any warranty claims resulting from electric strength field tests.
Caution:
Testing by applying AC voltages will result in high and
dangerous leakage currents flowing through the Y-capacitors
(see fig. Block diagram).
Safety and Installation Instructions
Terminal Allocation
The terminal allocation table defines the electrical potentials of
the AC-DC converters. For mechanical positions of the
terminals see Mechanical Data.
Standards and Approvals
All LOK models are approved according to the standards IEC/
EN 60950-1 and UL/CSA 60950-1.
LOR and LOS models are UL 508-listed components and
approved to EN 60950:2000 and UL/CSA 60950-1.
These converters have been evaluated for:
Class I equipment.
Building in with vertical mounting on a DIN-rail.
Double or reinforced insulation or an earthed part between
input and output.
Basic insulation between input and earth
Functional insulation between output and earth
The use in a pollution degree 2 environment
Connecting the input to a primary circuit with overvoltage
category II.
The converters are subject to manufacturing surveillance in
accordance with the above mentioned standards.
For details see the Declaration of Conformity (last 2 pages).
Protection Degree
IP 20: All models.
Table 9: Terminal allocation
Terminal
Electrical
LOK/LOR/LOS
1
Input
L
2
Protective earth
3
Input
N
4
D/Output (positive)
D /+
5
Output (positive)
+
6
Output (negative)
–
7
Output (negative)
–
8
R input or open
R / n.c.
Table 10: Isolation
Characteristic
Input to
Output to
Unit
protective earth
output
protective earth
Electric
Actual factory test 1 s
2.1
2.1 1
1.4
kVDC
strength
AC test voltage equivalent
1.5
1.5 1
1.0
kVAC
test voltage
to actual factory test
Insulation resistance at 500 VDC
>300
>100
M
Ω
1 In accordance with EN 50116 and IEC/EN 60950 only subassemblies are pre-tested with 4.3 kVDC or 3.0 kVAC.
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