UB40.241
UB-Series
24V,
40A,
DC-UPS
Jun. 2020 / Rev.0.1 DS-UB40.241-EN All values are typical figures specified at 24Vdc input voltage, 40A output current in
power supply mode at 25°C ambient, no charging and after a 5 minutes run-in time unless otherwise noted.
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DC-UPS. The user has to take care by himself to stay below the allowed output
currents in order not to overload the unit.
Output short circuit current in
power supply mode
Corresponds to the short-circuit current of the power supply or the current
limitation of an input fuse, if installed.
Overload behavior in battery mode
Time-delayed switch-off
Tripping delay in battery mode
Typ.
Typ.
Typ.
Typ.
5s
2.3s
0.73s
0.05ms
At 60A
At 70A
At 100A
At shorted output
Return current
Typ.
-250µA
Leakage current to the input of the DC-UPS in battery mode
Back-feeding loads
Max.
35V
The unit is resistant and does not show malfunctioning when a
load feeds back voltage to the DC-UPS. It does not matter
whether the DC-UPS is on or off.
Fig. 5-1
Input to output voltage loss,
typ.
Fig. 5-2
Battery input to output voltage loss, typ.
Input to Output Voltage Loss, typ.
0mV
20A
25mV
50mV
75mV
100mV
50A
40A
Output Current
0
125mV
A
B
A... 25°C
B... 60°C
10A
30A
150mV
Battery input to Output Voltage Loss, typ.
0mV
20A
50mV
100mV
150mV
200mV
50A
40A
Output Current
0
250mV
A
B
A... 25°C
B... 60°C
10A
30A
300mV
Fig. 5-3
Voltage loss measurement setup
Fig. 5-4
Overload current in battery mode
,
(tripping characteristic) typ.
V
Power
Supply
+
-
U
IN
Voltage Loss
U
IN
=
U
OUT
-
A
V
I
OUT
U
OUT
Variable
Load,
0-25A
UB40.241
Input
Output
Output Current, typ.
50A
10µs
100µs
1ms
10ms
0.1s
1s
10s
100A
150A
200A
300A
