Unicont SPb Ltd
Technical Documentation PS-303
Page
3
1.
General Information
The PS-303 power supply unit (PSU) is designed to supply stabilized 12 V or 24 V to
various shipboard and commercial consumers. A load transfer function is integrated into the
PSU, which ensures that in case of a failure in the main power supply it will switch over to an
external battery or to an emergency DC network.
2.
Delivery Set
1.
Power supply unit PS-303
1 piece
2.
Operation
manual
1
piece
3.
Technical Data
There are different versions of the PS-303 power supply units, and input and output
voltage and current values for different PSU versions are shown in the electrical data table
(Table 1).
Input voltage
Load transfer
110/220 50 Hz, 24 V, 12 V, depending on the model (see
the electrical data table)
Automatic load transfer from input #1 to input #2 in case
of a voltage failure at input #1 (relay contacts)
Output voltage
24 V, 12 V DC (see the electrical data table)
Load rated current
Number of terminals for loads
Protection
4 to 27.5 A (see the electrical data table)
2 terminals
From a short circuit or another overload, (with fuses for the
main and backup networks)
Rated power:
50 to 350 W (see Table 1)
Efficiency
Indication
Dimensions
Gland type
Operating temperature
Storage temperature
Weight
Protection class
85 %
Green LED supplied from the main network (input #1) and
red LED supplied from the backup network (input #2)
499
х
710
х
169 mm
MG 16 (similar to PG 13.5)
-20 to +55 °C
-60 to +70 °C
4 kg
IP 22