參數(shù)資料
型號(hào)： LMZ2320-7PD7F
元件分類： 電源模塊
英文描述： 2-OUTPUT 50 W AC-DC REG PWR SUPPLY MODULE
封裝： METAL, CASE M02, MODULE
文件頁(yè)數(shù)： 10/25頁(yè)
文件大小： 569K
代理商： LMZ2320-7PD7F
Cassette Style
DC-DC Converters
M Series
Edition 01/01.2001
18/25
Isolation
The electric strength test is performed as a factory test in
accordance with IEC/EN 60950 and UL 1950 and should
not be repeated in the field. Power-One will not honour any
Table 15: Isolation
Characteristic
Input to
Output to Output to Output to
Unit
case
output
case
output
class I
class II
class I
class II
option H
Electric
Required according to
1.5
3.0
3.0 1
3.0
0.5
-
kVrms
strength
IEC/EN 60950
2.1
4.2
4.2 1
4.2
0.7
-
kV DC
test voltage
Actual factory test 1 s
2.8
5.6
5.6 1
5.6
1.4
2.8
0.3
AC test voltage equivalent
2.0
4.0
4.0 1
4.0
1.0
2.0
0.2
kVrms
to actual factory test
Insulation resistance at 500 V DC
>300
>100 2
M
1 In accordance with IEC/EN 60950 only subassemblies are tested in factory with this voltage.
2 Tested at 300 V DC.
For creepage distances and clearances refer to:
Technical Information: Safety.
Safety of Operator Accessible Output Circuit
If the output circuit of a DC-DC converter is operator acces-
sible, it shall be an SELV circuit according to the IEC/EN
60950 related safety standards.
Since the M series DC-DC converters provide double or re-
inforced insulation between input and output, based on a
rated primary input voltage of 250 V AC and 400 V DC (for
class II units 250 V AC and DC), only operational insulation
is needed between the AC mains and the input of the DC-
DC converter. This means that there is no need for an elec-
trical isolation between the AC mains circuit and the DC-DC
converter input circuit to cause the output of an M series
DC-DC converter to be an SELV circuit. Only voltage
adaption and rectification to the specified input voltage
range of the DC-DC converter is needed.
The following table shows a possible installation configura-
tion, 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 nomi-
nal voltages if in series or +/– configuration) of 36 V.
However, it is the sole responsibility of the installer to as-
sure the compliance with the relevant and applicable safety
regulations. More information is given in:
Technical Infor-
mation: Safety.
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 V 1 (The
Primary circuit
Class I
Double or reinforced
SELV circuit
≤250 V AC no need for electrical
rated voltage
(A...LM) insulation, based on
isolation between the
between any input
250 V AC and 400 V DC
mains supply voltage and
pin and earth can
(provided by the DC-DC
theDC-DC converter
be up to 250 V AC
converter) and earthed
input voltage)
or 400 V DC)
case 2
≤250 V 1 (The
Class II
Double or reinforced
rated voltage
(CMZ,
insulation, based on
between any input
DMZ,
250 V AC or DC (provided
pin and earth can
LMZ)
by the DC-DC converter)
be up to 250 V AC
or DC)
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 relevant safety standard, e.g. IEC/EN 60950.
guarantee/warranty claims resulting from electric strength
field tests.
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