www.pulsar.pl PSCU 04344SEP
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The power supply is designed for a continuous operation and is not equipped with a power-
switch. Therefore, an appropriate overload protection in the power supply circuit should be provided. Moreover, the
user should be informed how to disconnect the power supply unit from the mains supply (usually by assigning an
appropriate fuse in the fuse box). The electrical system shall be made in accordance with applicable standards and
regulations.
2.2 Installation procedure.
1. Before installation, make sure that the voltage in the 230V power-supply circuit is cut off.
2. Mount the PSU in a selected location and lead the connection cables.
3. Connect the power cables (230V AC) to the L-N terminals of the PSU. Connect the ground wire to the terminal
marked with the PE symbol (power supply module connector). Use a three-core cable (with a yellow and green PE
protection wire) to make the connection. The power cables should be connected to the appropriate terminals on the
connection board through the bushing.
The shock protection circuit shall be done with a particular care: the yellow and green wire coat
of the power cable should be connected to the terminal marked with the PE symbol.
Operation of the PSU without the properly made and fully operational shock protection circuit is
UNACCEPTABLE! It can cause damage to the equipment or an electric shock.
4. Connect the receiver (DC
/DC converters) cables to the AUX1÷AUX4 terminals at the terminal block of the
LP4/SEP strip.
5. Switch on the 230V AC supply (~230V).
6. Check the optical indication of the PSU operation
: L1÷L4 green LEDs should be ON.
7. Close the cover after installing and checking the operation of the power supply.
Example of use of power supply in the CCTV installation:
A typical application of the PSCU04343SEP power supply is supplying four CCTV cameras using four-pair
twisted pair cable, where three pairs are used for power distribution and one pair for transmitting video signal.
Schematic example of the installation is shown in Figure 4. The distance between the PSCU04344 power supply
unit and the DC/DC converters depends on the type of cable used and the current drawn by the camera. The
typical distances are shown in Table 7.
Fig.4. Installation of the PSCU04344SEP.power supply