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T Series Data Sheet
?
? Building in
? Basic insulation between input and case, based on
250 VAC
? Double or reinforced insulation between input and output,
based on 250 VAC
? Operational insulation between output and case
? The use in a pollution degree 2 environment
? Connecting the input to a primary circuit with a maximum
transient rating of 2500 V (overvoltage class III based on a
110 VAC primary circuit, overvoltage class II based on a
230 VAC primary circuit).
Table 20: Isolation
500 Watt AC-DC Converters
The converters are subject to manufacturing surveillance in
accordance with the above mentioned UL standards and with
ISO9001:2000.
For details see the Declaration of Conformity.
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.
Characteristic
Input to case
and output
Output to
case
Temp. Sensor T
output to case
Unit
Electric
strength
test
Factory test ≥ 1 s
AC test voltage equivalent
to factory test
2.8 1
2.0
1.4
1.0
1.4
1.0
kVDC
kVAC
Insulation resistance at 500 VDC
> 300
> 300
> 100
M ?
1
According to EN 50116 and IEC/EN 60950-1, transformers and subassemblies connecting input to output are pretested with 5.6 kVDC or
4.0 kVAC.
10070a
Leakage Currents
Leakage currents flow due to internal leakage capacitance
and RFI suppression Y-capacitors. The current values are
proportional to the input voltage and frequency. They are
specified at maximum operating input voltage, where phase,
neutral, and protective earth are correctly connected, as
L
N
S1
S2
MI for
earth
leakage
current
L
N
Vo+
Vo–
Converter
required for class I equipment.
Under test conditions, the leakage current flows through a
measuring instrument (MI) as described in the fig. below, which
takes into account impedance and sensitivity of a person
touching unearthed accessible parts. The current value is
S3
MI for
output
leakage
current
calculated by dividing the measured voltage by 500 ? . If inputs
and/or outputs of converters are connected in parallel, their
individual leakage currents are added.
Fig. 48
Test set-up for leakage current in single phase configuration.
S1 is used to simulate the interchanging of phase and
neutral. S2, S3 select either the earth or output leakage
current test, S4 selects either the positive or negative output.
10061
500 ?
1500 ?
L1
L2
L1
L2
L
N
10071a
Converter
L3
N
Vo+
10 k ?
220 nF
S2
MI for
earth
Vo–
leakage
current
22 nF
V
S3
MI for
output
leakage
current
Fig. 49
Fig. 47
Measuring instrument (MI) for earth leakage current test
according to IEC/EN 60950, Annex D.
Test set-up for leakage current in 208 V phase to phase
configuration. S2, S3 select either the earth or output leakage
current test, S4 selects either the positive or negative output.
BCD20023 Rev AB, 02-Nov-2010
Page 27 of 31
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