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K Series with PFC Data Sheet
150 – 280 Watt AC-DC Converters
Safety of Operator-Accessible Output Circuits
If the output circuit of a converter is operator-accessible, it
shall be an SELV circuit according to IEC/EN 60950.
The table below shows a possible installation
configuration, compliance with which causes the output
Mains
~
~
Fuse
Fuse
10021a
AC-DC
con-
verter
+
SELV
–
circuit of a K Series AC-DC converter to be a SELV circuit
according to IEC/EN 60950 up to a configured output voltage
of 36 V (sum of nominal voltages connected in series) .
However, it is the sole responsibility of the installer to
ensure compliance with the applicable safety regulations.
Table 18: Safety concept leading to a SELV output circuit
Earth
connection
Fig. 32
Schematic safety concept.
Conditions
Nominal voltage
AC-DC converter
Grade of insulation
between input and output
Installation
Measures to achieve the resulting
safety status of the output circuit
Result
Safety status of the AC-DC
converter output circuit
provided by the AC-DC converter
Mains
≤ 250 VAC
Double or reinforced
Earthed case 1 and installation
according to the applicable standards
SELV circuit
1
The earth connection has to be provided by the installer according to the relevant safety standards, e.g., IEC/EN 60950.
Description of Options
Table 19: Survey of options
Option
-9
E
P 2
D 1
V 1
T
K
B, B1, B2
G
Function of option
Extended operational ambient temperature range
Electronic inrush current limitation circuitry
Potentiometer for fine adjustment of output voltage
Input and/or output undervoltage monitoring circuitry
Input and/or output undervoltage monitoring circuitry
Current sharing
H15S4 connector for models with 5.1 V output
Cooling plate (160 or 220 mm long)
RoHS-compliant for all six substances
Characteristic
T A = – 40 to 71 °C
Active inrush current limitation
Adjustment range +10 / – 60% of V o nom , excludes R input
Safe data signal output (D0 – DD)
ACFAIL signal according to VME specifications (V0, V2, V3)
Interconnect T-pins if paralleling outputs (max 5 converters)
For new designs; provides compatibility with LK1001 models
Replaces standard heat sink, allowing direct chassis-mounting
G is always the last character in the type designation
1
2
Option D excludes option V and vice versa; option V only for 5.1 V outputs.
Option P is not available for battery charger models.
-9 Extended Temperature Range
Option -9 extends the operational ambient temperature
11001b
range from –25 to 71 °C (standard) to – 40 to 71 °C. The
power supplies provide full nominal output power with
convection cooling. Option -9 excludes inrush current
limitation by NTC.
Rectifier
Control
FET
+
E Inrush Current Limitation
R s
R I
C b
The converters exhibit an electronic circuit replacing the
standard built-in NTC, in order to achieve an enhanced
inrush current limiting function.
Fig. 33
Option E block diagram
BCD20001-G Rev AC, 16-Dec-2010
Page 22 of 29
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