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Cassette Style
150 Watt AC-DC Converters
K Series PFC
Edition 01/01.2001
4/28
Rs ext
Ri
RNTC
Iinr p
Ui rms
Ci
04001
Input Under-/Overvoltage Lock-out
If the input voltage remains below approx. 65 V AC or ex-
ceeds approx. 280 V AC an internally generated inhibit sig-
nal disables the output(s). When checking this function the
absolute maximum input voltage rating
Ui abs should be
considered! Between
level the output voltage may be below the value defined in
table:
Output data (see: Technical Information: Measuring
and Testing).
Input Transient Protection
A VDR together with the input fuse and a symmetrical input
lter form an effective protection against high input tran-
sient voltages.
Input Fuse
A fuse mounted inside the converter protects the module
against severe defects. (If operated from a DC-source this
fuse may not fully protect the module when the input volt-
age exceeds 200 V DC! In applications where the convert-
ers operate at source voltages above 200 V DC an external
fuse or a circuit breaker at system level should be in-
stalled!)
Table 3: Fuse Specication
Module
Fuse type
Fuse rating
LK4/5000 1
slow-blow
SP T
4 A, 250 V
1 Fuse size 5
× 20 mm
Fig. 3
Equivalent circuit diagram for input impedance
Electrical Input Data
General Conditions
–
TA = 25
°C, unless T
C is specied.
– Pin 18 connected to pin 14,
Uo adjusted to Uo nom (option P); R input not connected.
– Sense line pins S+ and S– connected to Vo+ and Vo– respectively.
Table 2: Input data
Input
LK
Characteristics
Conditions
min
typ
max
Unit
Ui
Operating input voltage
Io = 0…Io nom
85
255
V AC 3, 4
Ui nom Nominal input voltage
TC min…TC max
230
Ii
Input current
Ui nom, Io nom 1
0.8
Arms
Pi o
No-load input power
Ui min…Ui max
9.0
10
W
Pi inh
Idle input power
unit inhibited
3.5
5
Ri
Input resistance
TC = 25°C
480
m
RNTC
NTC resistance 2
3200
4000
Ci
Input capacitance
80
100
120
F
Ui RFI
Conducted input RFI
EN 55022
B
Radiated input RFI
Ui nom, Io nom
B
Ui abs
Input voltage limits
–400
400
V DC
(without damage)
–400
400
VP
1 With double output modules, both outputs loaded with Io nom.
2 Valid for -7, -6, versions with NTC, (-9 versions exclude the NTC). Initial switch-on cycle. Subsequent switch-on/off cycles increase the
inrush current peak value.
3 AC frequency range 47...63 Hz.
4 For DC-input please ask your local Power-One partner
Reverse Polarity Protection
Should the input voltage to the unit be supplied from a DC
source the built-in bridge rectier provides reverse polarity
protection.
Inrush Current Limitation
The modules of the versions -7, -6, incorporate an NTC re-
sistor in the input circuitry which - at initial turn on - reduces
the peak inrush current value by a factor of 5...10 to protect
connectors and switching devices from damage. Subse-
quent switch-on cycles within short periods will cause an
increase of the peak inrush current value due to the warm-
ing-up of the NTC resistor. See also:
E option.
Inrush Current Peak Value
The inrush current peak value (initial switch-on cycle) can
be determined by following calculation:
Ui rms √2
Iinr p = ––––––––––––––––
(
Rs ext + Ri + RNTC)