Husqvarna DXR300, Operator'S Manual

Page: 10 / 60

10 –
English
ELECTRICAL SYSTEM
General
The electric system consists of a high-voltage circuit and a
low-voltage circuit.
High-voltage circuit
High-voltage is used as a power source for both the electric
motor and the low-voltage circuit. An automatic phase
rotation change-over switch ensures that the electric motor
has the correct rotation direction.
Power supply
The power supply from the main must be sufficiently powerful
and constant to ensure that the electric motor runs without
problems.
Too high or too low voltage causes the electric motor’s power
consumption, and consequently also its temperature, to
increase until the motor’s safety circuit trips.
Fuses
The fuses in the distribution box protect the electrical system
in conjunction with overloading or breakdown. The power
outlet must be correctly fused with respect to the electric
motor, the length of the power cable and the area of the power
cable’s conductor. The table 'Guide values for mains
connection” in the 'Technical data” section shows which fuse
is required for the electric motor.
The machine is equipped with Softstart and can be started
with most types of fuses.
If a fuse keeps blowing, there is a fault in the electrical system
or in the machine that is connected to it. Before restarting the
machine the source of the fault must be removed.
Power cable
The machine is connected to the mains with a 3 phase power
cable. It is very important that the cable that is used is
correctly dimensioned, i.e. that it has the correct cross-
sectional area in relation to the length of the conductor in
order to counteract drops in voltage. The guide values for the
cable’s size are set out in the table 'Guide values for mains
connection” in the 'Technical data” section.
Low-voltage circuit
The high-voltage current is reduced to low-voltage in an AC/
DC module. It is used to supply power to the control system
and functions such as work lighting and refilling pump.