NARGESA MC650, Instruction Book, Page: 13 / 82

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SECTION BENDING MACHINE MC650
IMPORTANT: This machine must be connected to an electrical outlet with earthing contact.
4.4 Instructions for connecting to the power supply
IMPORTANT: This machine must be connected to a 400V or 220V source with grounding contact The
MC650 is equipped with two 230V / 400V three
- phase motors of 3 Kw and 1Kw connected in star or delta
in order to connect to a 400V or 220V source. It should be connected to an only power source and to the
indicated power source. If the line voltage is not as indicated: the machine's frequency inverters ARE NOT
MULTI
- VOLTAGE, so if we have to change the voltage, the inverters must be replaced depending on the
supply voltage. At the same time, we will have to change the connection of the hydraulic group motor coils
as indicated below:
Changing the motor connection:
When the power supply is 400 V three - phase, connect in Star form (as preinstalled at the factory).
If the power supply is 230 V three - phase, proceed to connect in Triangle form. As indicated in the
illustration.
The connections are modified in the motor connection box, located inside the machine, changing the
configuration of the plates according to the mains voltage.
Figure 7. Change of engine
connections
Triangle figure
For voltage 230V
Star figure
(Default)
For voltage 400V
Before making any changes to the wiring of the motor bobbins or electrical panel, it is essential
to check that the machine is not connected to any power source.