MGM SM-SMX Series, Использование и обслуживание

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Page 6 of 32 A10H0321-NA
Wiring
Before connecting the motor to the power supply it must be earthed through
the terminals located inside the terminal box and, if any, on the motor frame.
These terminals must be kept clean and protected against corrosion.
Verify that the power supply specifications (Voltage and Frequency) are congruent to
those indicated on the motor nameplate.
Properly sized wires must be used both to connect the motor to the power supply and
to connect the earth wire. All the cables and wires must comply to the regulations of
the country where the motor is installed.
It’s additionally necessary to use over -current protection devices properly sized
according to the motor nominal current. We advise to follow the indication as reported
in the EN 60204-1 standard or to comply with the regulations of the country where the
motor is installed.
Verify that the motor direction of rotation of the motor is that desired. To change the
direction of rotation reverse 2 supply phases.
For the main supply follow carefully the below wiring connections.
Motor Voltage and Frequency are indicated on the motor nameplate.
When the wiring connection is completed, check thoroughly the proper tightening of
the terminals nuts.
Please contact MGM for information concerning the tightening nuts torque.
Verify that the full load motor current is congruent with the data stated on the name
plate (I Amps).
To wire motors controlled by inverter please follow the instructions provided by the
inverter manufacturer. For supply voltage higher than 500V or if long cables to
connect inverter – motor are used (more than 50m length) it’s recommended to use
motors windings with double impregnation or proper filters. Where prolonged duty
cycles are provided check the need of a forced ventilation.
Please contact MGM for more information about this issue.
To connect the auxiliaries, if on board (auxiliaries like thermal protectors, heaters,
forced ventilation etc,,,) consider the identification of the wires inside the terminal box
as described in the relevant paragraph.
Note: according to the motor type and to the auxiliary devices present,
the shape of the terminal box and the position of the earth terminal can
be different from what visible in the below figures.