Characteristics Of Power Supply - Veetsan VDH63 Manual De Instrucciones Para El Uso

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Characteristics of power supply

The AC power supply to the machine must meet the following conditions:
• max. voltage variation ± 10%
• max. frequency variation ± 1% continuous ± 2% for a short period.
Harmonic distorsion, unbalanced three-phase supply voltage, voltage pulses, interruption, dips and the other electric
characteristics must respect the provisions of point 4.3.2 of Standard EN 60204-1 (IEC 60204-1).
IMPORTANT!
The machine's power supply must be protected against overcurrents (short circuits and overloads) by
fuses or suitable thermal magnetic circuit breakers. A suitable high-sensitivity manual-reset differen-
tial omnipolar thermal-magnetic switch with contact gap enabling complete disconnection in category
III overvoltage conditions and complying with the current regulations, must be installed between the
power cable and the electric line.
IMPORTANT!
For protection against indirect contacts (depending on the type of supply provided for and connection
of earths to the equipotential protection circuit) refer to point 6.3.3 of EN 60204-1 (IEC 60204-1) with
the use of protection devices that ensure automatic cut-off of the supply in case of isolation fault in
the TN or TT systems or, for IT systems, the use of isolation controllers or differential current protec-
tion devices to activate automatic power disconnection (an isolation controller must be provided for
indicating a possible first earth fault of a live part, unless a protection device is supplied for switching
off the power in case of a such a fault. This device must activate an acoustic and/or visual signal
which must continue for the entire duration of the fault).
For example: in a TT system, a differential switch with cut-in current (e.g. 30 mA) coordinated with the
earthing system of the building where the machine is located must be installed ahead of the supply.
IMPORTANT!
Customers are requested to follow these instructions, otherwise the Manufacturer does not guarantee
the machine for continuous operation and/or against faults.
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