LOK4000 Datasheet, PDF (10/12 Pages) Power-One – DIN-Rail Mountable AC-DC (DC-DC) Converters

LOS, LOR, LOK4000 Series Data Sheet
DIN-Rail Mountable AC-DC (DC-DC) Converters
Leakage Currents 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 264 V
(50 Hz) where phase, neutral and protective earth are correctly
connected as required for class I equipment.
MI
500 Ω
1500 Ω
10 kΩ _{220 nF}
22 nF
V
Fig. 11
Measuring instrument (MI) for earth leakage current tests
according to IEC/EN 60950.
Under test conditions the leakage current flows through a
measuring instrument (MI) as described in fig. Measuring
instrument for earth leakage current tests, which takes into
account impedance and sensitivity of a person touching
accessible parts. The current value is calculated by dividing
the measured voltage by 500 W. If inputs and/or outputs of
LOS, LOR, or LOK models are connected in parallel, their
individual leakage currents are added.
L
10053
L
Vo+
N
N
Vo-
MI for
earth
leakage
current
Fig. 12
Test setup.
MI for
output
leakage
current
Table 11: Leakage currents
Characteristic
Maximum earth
leakage current
Permissible according to IEC/EN 60950
Specified value at 264 V, 50 Hz
Maximum output
leakage current
Permissible according to IEC/EN 60950
Specified value at 264 V, 50 Hz
LOK
Unit
3.5
mA
1.0
0.25
0.035
SEP 09, 2005 revised to JUL 17, 2006
Page 10 of 12
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