Electrical Connection; Important; Earthing; Equipotential - MBM MINIMA Serie Instrucciones Para La Instalación, El Uso Y El Mantenimiento

2.3

ELECTRICAL CONNECTION

Electrical connection should be performed in compliance with the IEC regulations, only by authorised and competent
personnel. In the first instance, examine the data shown on the technical data table of this manual, on the label and on the
electrical diagram. The envisaged connection is of the fixed type.
IMPORTANT: Ahead of each unit it is necessary to install an omnipolar main breaker, having a spacing among contacts of
at least 3mm; example:
- manual breaker of appropriate capacity, complete with fuse valves
- automatic breaker with respective magnetothermal relays.
2.3.1

EARTHING

It is essential to earth the unit.
To this purpose, it is necessary to connect to an efficient earthing system the terminals marked with the symbols ( ) placed
on the line-receiving terminal box. The earthing system should comply with the law in force.
The Manufacturer cannot be deemed responsible for any damages caused by the lack of unit earthing.
ATTENTION: NEVER INTERRUPT THE EARTH WIRE (Yellow-Green).
2.3.2

EQUIPOTENTIAL

The unit should be included within an equipotential system whose efficiency must be tested according to the law in force.
The screw marked with the label "Equipotential" is located near the terminal box on the base for models with oven, and at
the back for the remaining models.
2.3.3

POWER SUPPLY CABLE

The unit is supplied fitted for the following voltages: 3N AC 380...415V; 3 AC 220...240V; 1N AC 220...240V 50/60 Hz.
The flexible cable for power supply connection should not have characteristics lower than the rubber insulation type
H07RN-F. The cable should be inserted through the cable clamp and firmly fastened. Furthermore, the supply voltage with
the unit functioning should not go outside the value of the nominal tension ±10%.
The equipment is equipped with a cable as per specifications of table 2; in order to replace it or reach the terminal board it
is necessary to remove the frontal panel;
- connect the cable to the terminal box according to need, and following the instructions shown on the provided sticker
near the terminal bord and on the present booklet.
MODEL
TYPE OF TENSION
3N AC 380...415 V 50/60 Hz
2N AC 380...415 V 50/60 Hz
3 AC 220...240 V 50/60 Hz
1N AC 220...240 V 50/60 Hz
E 26
Max.
N° cables
A/f
mm 2
10,83 5 x 1,5
10,83 4 x 1,5
17,1 4 x 2,5
17,1 3 x 2,5
- 11 -
E 46
Max. N° cables Max.
A/f mm 2
12,5 5 x 1,5
21,7 4 x 2,5
21,7 4 x 2,5
34,2 3 x 6
E 66
N° cables
A/f mm 2
17,1 5 x 2,5
34,2 4 x 6
29,6 4 x 4
51,3 3 x 10
Tab. 2
GB