Electrical Connections; Three-Phase Connection - Virutex EB140 Manual De Instrucciones

A
(Figure 16)
R S
(Figure 17)
R S T
(Figure 18)
80 - EB140 / Operating instructions
T N

4.5 ELECTRICAL CONNECTIONS

The electrical connections must be made by
an authorised electrician.
The machine's schematic diagram may be found in the tech-
nical information book that came with this documentation,
and which forms an integral part of this manual.
Make sure that the site installation is prepared for the ins-
tallation of this machine, and that it is equipped with an
earthing connection and a power supply that are in perfect
condition.
Verify that the line section where the machine will be con-
nected is equipped with the prescribed protective devices
(magnetothermal and differential). The power supply must be
equipped with a neutral and an earthing connection.
Before plugging in the machine, ensure that the power supply
voltage is the same as that stated on machine specifications
plate A (Fig. 16). The machine is capable of operating with
voltage values ± 5%. If these values are very different, it will
be necessary to adjust the power supply voltage.

4.5.1 Three-phase connection

400 V 3 ~
The machine must be connected to an earthed three-phase
400 V mains supply, with a minimum capacity of 15 A, equi-
pped with the required protective devices (magnetothermal
and differential), and connected with a 5-conductor cable (3
phases, a neutral, plus earth, and connected as shown in fi-
gure 17) with 4 mm in diameter. (See the schematic diagram
2
below.)
230 V 3 ~
It may also be connected to a three-phase 230 V mains supply
with identical characteristics, using a 4-conductor cable (3
phases plus earth, 4 mm in diameter), as shown in figure 18.
2
Next, a hot-wire must be made between phase T and terminal
N on the terminal strip. For this voltage, the motor connec-
tion and the capacity of the motor guards GM1, GM2 and
GM3 must also be changed on the electrical board. (See the
schematic diagram below.)