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Benign Environment
AC-DC Converters <100 W
H-Family
Edition 2/96 - Melcher AG
10 - 65
MELCHER
The Power Partners.
10.3
Electrical Input Data
General conditions:
–
TA = 25°C, unless TC is specified. – Connector pins 2 and 23 interconnected, R input not connected.
Table 3: Input data
Input
110H
230H
Characteristics
Conditions
min
typ
max
min
typ
max
Unit
Ui
Input voltage range
Io = 0…Io nom
85
132
187
255
V AC
Ui nom Nominal input voltage
TC min…TC max
110
230
Ii
Input current
Ui nom, Io nom 1
0.78
0.44
Arms
Si 0
No-load apparent input power:
Ui nom
Single output
I o1,2,3 = 0
1
1.5
1
1.5
VA
Double output
7
9
7
9
Triple output
7
9
7
9
Si inh
Idle apparent input power
inhibit mode
2.5
Iinr p 3 Peak inrush current
Ui = Ui max
80
42
A
tinr r
Rise time
RS = 0 4
200
300
s
tinr h
Trailing edge half-life
TC = 25°C
1100
1600
Ri
Input resistance
TC = 25
°C
450
800
m
RNTC 2 NTC resistance
2000
8000
Ci
Input capacitance
250
570
50
270
F
U i abs Input voltage limits
0
142
0
284
V AC
without any damage
1 With multiple output modules, the same condition for each output applies.
2 Initial switch-on cycle. Subsequent switch on/off cycles increase the inrush current peak value.
3 Iinr p = Ui/(Rs + Ri + RNTC)
4 RS = source resistance.
Input Under-/Overvoltage Cut-out
If the input voltage remains below 0.6
Ui min or exceeds
1.1
Ui max (approx. values), an internally generated inhibit
signal disables the output(s). When checking this function
the absolute maximum input voltage rating
Ui abs must be
carefully considered (see table above).
Input fuse
The modules do not incorporate any fuse. External fuses in-
stalled in the wiring to the input are essential.
Table 4: Recommended fuse types (slow-blow)
Series
Schurter type
Part number
110H
SPT 2.5 A
250 V
0001.2508
230H
SPT 2.5 A
250 V
0001.2508