LS4301-7R POWER-ONE [Power-One], LS4301-7R Datasheet - Page 20

• Manufacturer Part Number: LS4301-7R
• Description: 100 Watt AC-DC Converters with PFC
• Manufacturer: POWER-ONE [Power-One]

Cassette Style
Edition 01/01.2001
Standards and Approvals
All AC-DC converters correspond to class I equipment.
They are UL recognized according to UL 1950, UL recog-
nized 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
• Basic insulation between input and case, based on 250 V
• Double or reinforced insulation between input and output,
• Basic insulation between output and case based on
• Operational insulation between output and output
• Connecting the input to a primary or secondary circuit
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
254 V (50 Hz) where phase, neutral and protective earth
are correctly connected as required for class I equipment.
Fig. 28
Measuring instrument (MI) for earth leaking current tests
according to IEC/EN 60950.
Table 13: Isolation
1
2
For creepage distances and clearances refer to: Technical Information: Safety.
Characteristic
Electric
strength
test voltage
Insulation resistance at 500 V DC
In accordance with IEC/EN 60950 only subassemblies are tested in factory with this voltage.
Tested at 100 V DC.
AC and 400 V DC
based on 250 V AC and 400 V DC
200 V AC and DC
which is subject to a maximum transient rating of 2500 V
(overvoltage category III based on a 110 V primary cir-
cuit, overvoltage category II based on a 230 V primary
circuit).
MI
Required according to
IEC/EN 60950
Actual factory test 1 s
AC test voltage equivalent
to actual factory test
500
22 nF
V
10 k
1500
220 nF
Input to
case
100 Watt AC-DC Converters
1.5
2.1
2.8
2.0
300
Input to
output
5.6
4.0
3.0
4.2
300
1
1
1
1
Output to Output to
• The use in a pollution degree 2 environment
• The UL 1950 recognition limits the minimum input voltage
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 factory test in ac-
cordance with IEC/EN 60950 and UL 1950 and should not
be repeated in the field. Power-One will not honour any
guarantee claims resulting from electric strength field tests.
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
unearthed accessible parts. The current value is calculated
by dividing the measured voltage by 500
units are connected in parallel, their individual leakage cur-
rents are added.
Fig. 29
Test set-up
case
1.4
1.0
Important: Testing by applying AC voltages will result in
high and dangerous leakage currents flowing through
the Y-capacitors (see fig.: Block diagram ).
P
N
300
to U
exceeds 90 C.
–
–
i
= U
output
i min
0.14
100
0.1
–
–
+ 5 V AC = 90 V AC if the case temperature
2
kV DC
kV
kV
Unit
M
rms
rms
leakage
current
MI for
earth
P
N
S Series PFC
. If inputs of S-
Vo+
Vo–
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