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ELECTRICAL CONNECTIONS
1) Connection to the electricity main
• Power supply line;
The machine’s power supply line must be laid by following a clearly defined route in order to make it as correct as possible any without
any breaks. Pass the line through the opening on the button of the electrical panel. Secure the line integral with the structure of the
machine. Then continue inside the panel and connect the conductors directly to the input terminals of the main disconnecting device
of the machine.
The characteristics of the main lines should be determined by qualified personnel specialized in the design of electrical systems,
according to your national regulations and standards.
• Power supply system;
The power cables of the machine’s supply line must be taken from a system of symmetrical three-phase voltages (difference between
voltage max 2%) and of a separate protection conductor.
V= 400V ± 10%
f= 50 Hz
• Protection on supply side:
An automatic switch must be installed on the supply side of the side in order to protect against any overcurrents and indirect contacts
that could occur when the machine is operating.
It is advisable to install an automatic current limiter switch in order to limit the effective short-circuit current in the connecting point of
the machine. This allows a protection device with a lower breaking capacity than that required in the connection point to be sized like
the main circuit-breaker of the machine.
The line and switch must be coordinated in compliance with the current laws governing electrical safety matters, regarding the type
of installation and environmental conditions in which the machine must operate.
• Protection conductor (ground wire):
The protection conductor from the feeder line must be connected straight to the ground screw identified by code
“PE”,
which ensures
the equipotential connection of all metal grounding points and structural parts of the machine.
• Signals and data lines
Do not exceed the maximum allowed distance of the cable as shown in the wiring diagram. Put cables away from power lines with
a different voltage or emitting electromagnetic noise, if really necessary do not to put in parallel but only cross with these cables to
90°. Do not put cables near equipment that can create electromagnetic interference (antennas, speakers, radio repeaters etc ...). Any
shielding of the cable must be connected to a ground without noise, while preserving the continuity across the total length of the cable.
• Connection
Always refer to the wiring diagram supplied with the unit. Verify that the network has characteristics corresponding to the data shown
on the nameplate of the unit. Before starting work, verify that the switching device at the start of the line power unit is open, locked
and a warning sign shown. Make the connection to the ground first that the others phase; protect the wires using cable properly fitted.
Before powering on the unit, ensure that you have restored all the protections that were removed during work on connection.
2) Electric panel
• Protection degree:
The electric panel casing is made from sheet metal and has IP54 protection rating at the doors directly accessible from the outside.
The other parts of the casing guarantee a protection degree that is at least equivalent to
IP22
, as established by the current laws in
force: this has been achieved since the panel has further protection against the penetration of solid foreign bodies and atmospheric
agents thanks to the machine structure in which it is housed.
• Starting and stopping function:
The red handle on the panel door directly acts on the main circuit-breaker. The handle also acts as a door lock since it ensures that
the machine is only powered when the door is shut. The stopping function carried out by the main circuit-breaker is classified as type
“0” since the machine is stopped by immediately cutting off the power supply.
3) Reference standards
• The provisions established by the following Directives have been complied with to ensure the safety of the electrical products placed
on the European Union market:
- Low Voltage Directive
2006/95 EEC
which also includes the following harmonized standards:
CEI EN 60335-1 and 60335-2-40.
Classification:
CEI EN 60204-1.
Safety of machinery. Electrical equipment of machines. Part 1:
General rules.
- Directive
2004/108/EEC
concerning
“Electromagnetic compatibility”.
4) User connection
For more details refer to the wiring diagram of the unit.
Summary of Contents for RHA series
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