7
DANGER
Skilled operators must arrange the electric connections.
DANGER
Before connecting, see the attached electric diagram and the pla
the information about the voltage, the frequency, etc.
DANGER
Connect the ground by the terminal PE (yellow
green) before making any other
connection.
DANGER
Apply a knife switch at the top of the connecting cable of the machine t
system.
The knife switch must be combined with a safety device against the overload with a
differential switch (safety switch).
The technical features of the safety device must be in accordance with the standards in
force in the country where the machine has been installed.
ATTENTION
To grant an optimal working, the appliance needs a constant electric feeding with no
interruptions and no loss of tension. If the feeding net is not stable and trouble free, it
will be necessary to connect the appliance to a current equalizer with a 30 Watt power.
ELECTRIC TOLERANCES:
Real voltage 10 % of the nominal one.
Frequency: 1 % of the nominal one in a continuous way.
2 % of the nominal one for a short period.
The harmonic distortion of the sum from the second to the fifth harmonics not more than 10 % of the
total voltage as a real value between the conductors. A further distortion of 2% is accepted for the sum
from the sixth to the thirtieth harmonics of the real total value between the conductors.
With reference to the tension unbalance of the three-phase voltage, the inverted sequence component
and the zero sequence component must not be more than 2% of the direct sequence component of
the voltage.
The voltage pulses must not last more than 1,5 ms with an up/down time between 500 ms and 500 s
and a peak value not higher than 200 % of the real value of the nominal tension.
The electric feeding must not be interrupted or zeroed for more than 3 ms. Between two interruptions it
must not take more than 1 s.
The interruptions must not overcome 20 % of the tension peak for more than one cycle. Between two
interruptions it must not take more than 1 s.
The manufacturer assumes no liability for any damages to people, things and animals caused by the
non-compliance of the above instructions.
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