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參數(shù)資料
| 型號： | LKP5741-5RD6T |
| 元件分類： | 電源模塊 |
| 英文描述： | 2-OUTPUT 250 W AC-DC PWR FACTOR CORR MODULE |
| 封裝： | HEAT SINK, METAL, CASE K02, MODULE |
| 文件頁數(shù)： | 13/23頁 |
| 文件大?。?/td> | 534K |
| 代理商： | LKP5741-5RD6T |
Cassette Style
AC-DC Converters
KP Series
Edition 01/01.2001
20/23
E Inrush Current Limitation
The converters may be supplemented by an electronic cir-
cuit (option E, replacing the standard built-in NTC) to
achieve an enhanced inrush current limiting function.
Table 15: Inrush current characteristics with option E
Characteristics
LKP
Unit
Ui = 230 V AC
typ
max
Iinr p
Peak inrush current
–
21.7
A
tinr
Inrush current duration
35
50
ms
15
Ii [A]
10
5
0
–5
–10
0
20
40
60
80
t [ms]
tinr
Capacitor
Ci
fully charged
Normal operation
(FET fully conducting)
20
10
50
70
30
11002
Fig. 30
Inrush current with option E, Ui = 230 V AC, Po = Po nom
Precaution:
Subsequent switch-on cycles at start-up are limited to
max. 10 cycles during the rst 20 seconds (cold unit) and
at continuing on/off (
TC =95°C) max. 1 cycle every
8sec.
Input
Filter
Control
Converter
FET
Ci
RI
RS
Rectifier
PFC
-
Control
1
1001
Fig. 29
Option E block diagram
Description of Options
Table 14: Survey of options
Option
Function of Option
Characteristics
E
Electronic inrush current limitation circuitry
Active inrush current limitation
P 1, 2
Potentiometer for fine adjustment of output voltage
Adjustment range +10/–60% of
Uo nom excludes R input
D
Input and/or output undervoltage monitoring circuitry
Safe data signal output (Versions D0...DD)
T
Current sharing
Interconnect T-pins if paralleling outputs (3 units max.)
B1
Cooling plate
Replaces standard heat sink, allowing direct chassis-mounting
1 Option R excludes option P and vice versa.
2 Option P not available for LKP 5740-6R
Load
max. 5 units in parallel connection
+
–
Power bus
Module
Vo2–
Vo2+
Vo1–
Vo1+
T
Module
Vo2–
Vo2+
Vo1–
Vo1+
T
11037
Fig. 28
Paralleling of double output units using option T with
Power Bus
Option P Potentiometer
The potentiometer provides an output voltage adjustment
range of +10/–60% of
Uo nom and is accessible through a
hole in the front cover. This feature enables compensation
for voltage drops across the connector and wiring. Option P
is not recommended if units are connected in parallel.
Option P excludes the R-function. With double output units
both outputs are affected by the potentiometer setting (dou-
bling the voltage setting if the outputs are in series).
If the output voltages are increased above
Uo nom via R-in-
put control, option P setting, remote sensing or option T, the
output current(s) should be reduced accordingly so that
Po nom is not exceeded.
Option T Current Sharing
This option ensures that the output currents are approxi-
mately shared between all paralleled modules and in-
creases system reliability. To use this facility, simply inter-
connect the T pins of all modules. The load leads should
have equal length and cross section to ensure equal volt-
age drops. Not more than 3 units should be connected in
parallel. If output voltage adjustment is requested we
strongly recommend to use the R-input instead of option P,
as with option P the required setting accuracy is difcult to
achieve. The output voltages must be individually set prior
to paralleling to within a tolerance of 1...2% or the R pins
should be connected together.
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