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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18.
S
AFETY AND
P
ROTECTION
F
EATURES
Isolation resistance
Min.
10MOhm
At delivered condition between power port and signals,
measured with 500Vdc
Min.
10MOhm
At delivered condition between power port and housing,
measured with 500Vdc
Min.
10MOhm
At delivered condition between signals and housing,
measured with 500Vdc
Dielectric strength
Max.
Max.
500Vac
500Vac
Power port to signal port
Power port / signal port to housing
Class of protection
III
A PE (Protective Earth) connection is not required
Ingress protection
IP 20
According to EN/IEC 60529
Over-temperature protection
Included
In case of a too high temperature in battery mode, the
output shuts down. To attempt a restart, turn the input
power off and wait until the device has cooled off before
turning in again.
There is no correlation between the operating temperature
and turn-off temperature since this is dependent on input
voltage, load and installation methods.
Output over-voltage protection
Max.
32V
In case of an internal defect, a redundant circuit limits the
maximum output voltage. The output shuts down and
automatically attempts to restart.
Internal input fuse
Not included
Input over-voltage protection
Max.
35Vdc
No harm or defect of the unit
Reverse input polarity protection
Max.
-35Vdc
No harm or defect of the unit
Reverse battery polarity protection
Max.
-35Vdc
No harm or defect of the unit
Protection against wrong battery voltage
Max.
+35Vdc
No harm or defect of the unit
Battery deep discharge protection
Included
Buffering will stop when deep discharge protection is active,
and batteries will be disconnected from the DC-UPS.
Touch current (leakage current)
The leakage current which is produced by the DC-UPS itself depends on the input
voltage ripple and need to be investigated in the final application. For a smooth
DC input voltage, the produc
ed leakage current is less than 100μA.
