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LOS, LOR, LOK4000 Series Data Sheet
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DIN-Rail Mountable AC-DC (DC-DC) Converters
Leakage Current
A leakage currents flows due to internal leakage capacitance
and Y-capacitors. This current is proportional to V i and the
input frequency, when neutral and protective earth are
correctly connected as for class I equipment; see table 11.
Table 11: Leakage currents
The following table shows a possible installation configuration,
compliance with which causes the output circuit of an LOS,
LOR or LOK4000 converter to be an SELV circuit up to a
configured output voltage (sum of nominal voltages, if in series)
of 36 V.
However, it is the sole responsibility of the installer to assure
compliance with the applicable safety regulations.
Characteristic
LOK
Unit
Specified value at 264 V, 50 Hz
Specified value at 264 V, 50 Hz
Maximumearth Permissibleaccord.toIEC60950
leakage current
Maximum output Permissible accord. to IEC 60950
leakage current
3.5
1.0
0.25
0.035
mA
Mains
~
~
Fuse
Fuse
AC-DC
con-
verter
10021
+
SELV
–
Earth connection
Safety of Operator-Accessible Output Circuits
The output circuit of the converter is an SELV circuit according
to the IEC/EN 60950 -1 related safety standards.
Table 12: Safety concept leading to a SELV output circuit
Fig. 11
Schematic safety concept
Conditions
Nominal Supply
voltage
AC-DC converter
Grade of insulation between
input and output, provided
Installation
Measures to achieve the resulting
safety statuts of the output circuit
Result
Safety statuts of the AC-DC
converter output circuit
by the AC-DC converter
Mains ≤ 250 VAC
Double or reinforced
Earth connection 1 and installation
SELV circuit
according to the applicable standards
1 The
earth connection of terminal no. 2 has to be provided by the installer according to the relevant safety standards, e.g. IEC/EN 60950-1.
Description of Options
F: Built-in Second Fuse
A built-in second fuse in the neutral input line enables safe
connection to the mains where phase and neutral are not
defined or cannot be identified as e.g., in the case of plug and
socket connection to the mains via Schuko-plugs; see also
the converters are available with connectors fitted with screw
terminals. The system connectors are UL-listed and
approved for currents up to 10 A. Wire cross-sections: Solid
wires 1.5 mm 2 (AWG14), stranded wires 1 mm 2 (AWG16).
G: RoHS
RoHS-compliant for all six substances.
Installation Instruction.
K: System Connectors
For installation into systems using preassembled harnesses
NUCLEAR AND MEDICAL APPLICATIONS - Power-One products are not designed, intended for use in, or authorized for use as critical
components in life support systems, equipment used in hazardous environments, or nuclear control systems without the express written
consent of the respective divisional president of Power-One, Inc.
TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on
the date manufactured. Specifications are subject to change without notice.
BCD20035-G Rev AB, 23-Jun-2011
Page 10 of 10
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