參數(shù)資料
型號(hào)： LM2540-7ERV0AH
廠(chǎng)商： POWER-ONE INC
元件分類(lèi)： 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)： 9/24頁(yè)
文件大小： 982K
代理商： LM2540-7ERV0AH
Cassette Style
AC-DC Converters
M Series
Edition 5/5.2000
17/24
MI for
output
leakage
current
Vo+
Vo–
N
P
10042
N
P
MI for
earth
leakage
current
LM 1000
LM 2000
LM 3000
Fig. 19
Test set-up for class I equipment.
MI for
output
leakage
current
Vo+
Vo–
N
P
10043
N
P
MI for
enclosure
leakage
current
LMZ 1000
LMZ 2000
LMZ 3000
connection
to case
Fig. 20
Test set-up for class II equipment.
Table 17: Leakage currents
Characteristic
Class I
Class II
Unit
LM 1000...3000
LMZ 1000...3000
Maximum earth
Permissible according to IEC/EN 60950
3.5
-
mA
leakage current
Specified value at 264 V, 50 Hz
1.4
-
Maximum enclosure
Permissible according to IEC/EN 60950
-
0.25
leakage current
Specified value at 264 V, 50 Hz
-
0.03
Maximum output
Permissible according to IEC/EN 60950
0.25
leakage current
Specified value at 264 V, 50 Hz
0.005
0.15
Safety of operator accessible output circuit
If the output circuit of an AC-DC converter is operator ac-
cessible, it shall be an SELV circuit according to the IEC/EN
60950 related safety standards.
The following table shows a possible installation configura-
tion, compliance with which causes the output circuit of an
M series AC-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 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 Informa-
tion: Safety.
If the M series AC-DC converters are used as DC-DC con-
verters, please refer to the data sheet:
DC-DC converters
≤100 Watt M series.
Table 18: Safety concept leading to an SELV output circuit
Conditions
AC-DC converter
Installation
Result
Nominal supply
Converter
Grade of insulation
Measures to achieve the resulting
Safety status of the AC-DC
voltage
type
between input and output
safety status of the output circuit
converter output circuit
by the AC-DC converter
Mains
LM
Double or reinforced
Earthed case 1 and installation
SELV circuit
≤250 V AC
according to the applicable standards
LMZ
Installation according to the applicable
standards
1 The earth connection has to be provided be thge installler according to the relevant safety standards, e.g. IEC/EN 60950.
AC-DC
con-
verter
Mains
SELV
Earth connection
+
–
~
10021
Fuse
Fig. 21
Schematic safety concept. Use fuses and earth connec-
tion as per:
Installation Instructions and table: Safety con-
cept leading to an SELV output circuit.
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