參數(shù)資料
型號(hào)： LMZ1601-7R
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
文件頁(yè)數(shù)： 10/26頁(yè)
文件大?。?/td> 771K
代理商： LMZ1601-7R
M Series Data Sheet
50 Watt DC-DC and AC-DC Converters
BCD20018 Rev AB
Page 18 of 26
www.power-one.com
Safety of Operator-Accessible Output Circuits
If the output circuit of a DC-DC converter is operator-
accessible, it shall be an SELV circuit according to the IEC/EN
60950 safety standards.
Since the M Series converters provide double or reinforced
insulation between input and output based upon a rated
primary input voltage of 250 VAC or 400 VDC, only functional
insulation is needed between the AC mains and the input of the
converter. Only voltage adaption and rectification to the
specified input voltage range of a DC/DC converter is needed.
Table 16: Safety concept leading to an SELV output circuit
Conditions Front end
DC-DC converter
Result
Nominal
Minimum required grade
Maximum rated
Minimum required
Equip-
Measures to achieve the
Safety status
supply
of insulation, to be pro-
DC output voltage
safety status of the ment
specified safety status of
of the DC-DC
voltage
vided by the AC-DC front
from the front end
front end output
the output circuit
converter
end, including mains
circuit
output circuit
supplied battery charger
Mains
Operational (i.e. there is
400 VDC 1 (The
Primary circuit
A
– LM
Double or reinforced
SELV circuit
250 VAC
no need for electrical
rated voltage
insulation, based on
isolation between the
between any input
250 VAC and 400 VDC
mains supply voltage and
pin and earth can
(provided by the DC-DC
theDC-DC converter
be up to 250 VAC
converter) and earthed
input voltage)
or 400 VDC.)
case 2
1 The front end output voltage should match the specified operating input voltage range of the DC-DC converter.
2 The earth connection has to be provided by the installer according to the safety standard IEC/EN 60950.
The converters have been evaluated for:
Class I equipment
Building in
Basic insulation between input and case and double or
reinforced insulation between input and output, based on
the input voltage of 250 VAC or 400 VDC
Functional insulation between output(s) and case
Functional insulation between the outputs
Pollution degree 2 environment
Overvoltage catagory II
Altitude up to 2000 m
Table 17: Isolation
Characteristic
Input to case
Output(s) to
Output to
Unit
and output(s)
case (standard)
case (option H)
output
Electric
Factory test >1 s
2.8 1
1.4
2.8
0.3
kVDC
strength
AC test voltage equivalent
2.0
1.0
2.0
0.2
kVAC
test
to factory test
Insulation resistance at 500 VDC
>300
>100 2
M
Creapage distances
≥ 3.2 3
--
mm
1 According to EN 50116 and IEC/EN 60950, subassemblies connecting input to output are pre-tested with 5.6 kVDC or 4 kVAC.
2 Tested at 300 VDC
3 Input to outputs:
≥6.4 mm
The converters are subject to manufacturing surveillance in
accordance with the above mentioned standards and with ISO
9001:2000.
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.
Fig. 17
Schematic safety concept
AC-DC
front
end
DC-DC
con-
verter
Mains
Battery
SELV
Earth connection
+
–
~
10018a
Max. 250 VAC or
400 VDC
Max. 250 VAC or
400 VDC
Fuse
+
The following table shows a possible installation configuration,
compliance with which causes the output circuit of the DC-DC
converter to be an SELV circuit according to IEC/EN 60950 up
to a configured output voltage (sum of nominal voltages if in
series or +/– configuration) of 48 V. However, it is the sole
responsibility of the installer to assure the compliance with the
relevant and applicable safety regulations.
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