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–EIMWC00408-16EN - 15/60
CAUTION
Use copper conductors only. Use of conductors in any material other than copper could cause overheating or
corrosion at the connection points and damage the unit.
To avoid interference, all control wires must be installed separately from the power cables. Use separate electrical
conduits for this purpose.
CAUTION
Before servicing the machine in any way, open the main disconnecting switch
on the machine’s main power supply.
When the machine is off but the disconnector switch is in the closed position, unused circuits are live, as well.
CAUTION
Concurrence of single-phase and three-phase charges and unbalance between phases can cause leakages towards
ground of up to 150 mA during the normal operation of the units of the series.
If the unit includes devices that cause superior harmonics (such as VFD and phase cut), the leakage towards ground
could increase to very high values (about 2 Ampere).
The protections for the power supply system must be designed in accordance with the above mentioned values.
The area where unit is installed has to be restricted accessible by authorized personnel only.