E2 Power Supply Characteristics - Electrolux EGWSSIC Manual

E2 Power supply characteristics
The AC power supply to the machine must meet the following conditions:
• max. voltage variation
• 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 par. 4.3.2 of Standard EN 60204-1 (IEC 60204-1)..
ATTENTION!
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 dif-
ferential 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.
ATTENTION!
For protection against indirect contacts (depending on the type of supply foreseen and the con-
nection of the masses to the equipotential protection circuit) refer to par. 6.3.3 of EN 60204-1
(IEC 60204-1) with the use of protection devices that ensure automatic disconnection of the
power supply in the event of an insulation fault in TN or TT systems, or, for IT systems, the use of
isolation controllers or differential current protection devices to start automatic disconnection of
the power supply (except when a safety device is provided to disconnect the power in case of a
first fault to earth, an isolation controller must be provided to indicate the occurrence of a first
fault by a live part to the masses or to earth. This device must activate an audible and/or visual
signal which must continue for the duration of the fault).
For example, in a TT system it is necessary to install a differential circuit breaker upstream of the
supply with intervention current coordinated (e.g. 30 mA) with the earthing system of the building
where the machine is to be installed.
ATTENTION!
The Customer is requested to follow these instructions, otherwise the Manufacturer does not
guarantee the machine for continuous operation and/or against faults.
12
± 10%