6
2.
Installation
.
2.1 Requirements.
The buffer power-supply shall be mounted by the qualified installer having appropriate (required and necessary
for a given country) permissions and qualifications for connecting (operating) 230V AC installations and low-voltage
installations. The device shall be mounted in closed rooms, according to the environment class II, of the normal air
humidity (RH=90% max. without condensation) and the temperature within the range from -10°C to +40°C. The power-
supply shall operate in a vertical position so that free and convectional air flow through ventilating holes of the casing is
guaranteed.
Before installation is started, the balance of the power-supply load shall be performed. During the normal
operation, the sum of currents collected by receivers shall not exceed
I=3A (P=36W max.). It is acceptable to
change values of fuses to other than original, if not all outputs of power supply are used and Pmax is not
exceeded.
As 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 shall be guaranteed. Moreover, the user shall be informed
about the method of isolation of the power supply from the power voltage (usually through assignment and marking of
an appropriate fuse in the fuse-box). The electrical system shall be made in accordance with valid standards and
regulations.
2.2 Installation procedure.
1. Before installation is started, the voltage in the 230V power-supply circuit shall be isolated.
2. The power-supply shall be mounted in a selected location and connection cords shall be lead.
3. Remove the power fuse protecting the power supply circuit.
4. The power cables (~230V AC) shall be connected to L-N terminals of the power supply. The earth conductor shall be
connected to the terminal marked by the earth symbol
. The connection shall be made by means of a three-core cable
(with a yellow and green PE protection wire). The power cables shall be lead to appropriate terminals of the connection
board through bushing.
The circuit of the shock protection shall be performed with a particular care, i.e. the yellow and green
protection wire of the power cable shall be connected from one side to the terminal marked by the symbol of
in the casing of the power-supply. Operation of the power-supply without the properly made and fully
operational circuit of the shock protection is UNACCEPTABLE!. It can result in failure of devices and electric
shock.
5. Connect the conductors of consumers to:
A1, A2, A3, B1, B2, B3, C1, C2, C3
and
GND
x3 (maintaining
polarization).
6. As there are significant voltage drops at the resistance of power cables of receivers during installation, it is possible to
adjust a voltage value by potentiometer
A - outputs A1, A2, A3
B - outputs B1, B2, B3
C - outputs C1, C2, C3
7. Insert the fuse into the power supply circuit and switch on power.
8. Check the optical signaling of the power supply.
9. After installation is completed and operation of the power-supply is checked, the casing can be closed.
3. The power supply unit operation indication.
The power-supply is equipped with the optical signaling of operation modes. Voltage at the outputs of the power
supply is indicated by lighting of green LEDs at the front panel of the device.
3.1 Optical signaling (fig.3.).
•
Green
LEDs A1….C3
indicate the power-supply mode at outputs: A1…..C3
If power supply is lost at the output (fuse blow), a correspondent LED stops lighting
(A1 for A1 output, etc.)
•
The red
LED AC
indicates supply status at power supply unit input. In case of supply loss at input (lack of
230V AC, F failure) the diode stops lighting.