- 10 -
GB
2.3
ELECTRICAL CONNECTION
The electrical connection must be made in compliance with CEI standards, only by authorized and skilled personnel.
Firstly, check the data given in the technical data table of this manual, on the data plate and in the wiring diagram. The
envisaged connection is of the fixed type.
IMPORTANT: A multi-polar mains cut-off device must be provided upstream from each unit, with a contact gap of at least 3
mm., for example:
- a manual switch of suitable capacity, equipped with fuses
- circuit breaker with relevant miniature circuit breakers.
2.3.1
EARTHING
It is vital to earth the unit. Connect the terminals marked by the symbols ( ) positioned on the line-in terminal block to
an efficient grounding complying with the regulations in force.
The manufacturer cannot be considered responsible for any damage caused by failure to earth the system.
CAUTION: NEVER CUT THE GROUNDING CABLE (yellow-green)
2.3.2
EQUIPOTENTIAL SYSTEM
The unit must be included in an equipotential system whose efficiency must be checked according to the standards in force.
The screw marked with the ”Equipotential” label is on the back.
2.3.3
POWER CABLE
The unit is delivered fitted for the following power: 1N AC 220...240 V 50/60 Hz.
The specifications of the power supply connection flexible cable must match or be superior to those of the cable with rubber
insulation H07RN-F. Introduce the cable through the cable clamp and secure it firmly. During operation, the power supply
voltage should not differ from the voltage rating by +/-10%.
The unit is supplied with a cable with the specifications given in Tab. 3 (page 7); to access the terminal block or replace it, it
is necessary to:
- remove the front panel
- connect the supply cable to the terminal block according to need, following the instructions given on the label located near
the terminal block and in this handbook.
2.3.4
CONNECTIONS TO VARIOUS MAIN POWER SUPPLIES
POWER SUPPLY CABLE
1 AC 220...240 V 50/60 Hz
PE (earth) yellow-gree
N
(NP)
blue
L
1
(R)
brown
Tab.2
Tab.3
MODEL
SUPPLY VOLTAGE TYPE
ECC46
Max.
A/f
n° cables
mm
2
1AC 220...240 V 50/60 Hz
4,3
3 x 1,5
