Installation And Assembly - EBARA E-SPD MT 2200 Manual De Instrucciones Y Mantenimento

7. INSTALLATION AND ASSEMBLY

Before installing the frequency inverter, carefully read the whole of this manual and consult the
safety regulations in force in the country in which it will be used.
The installation must be carried out by a qualified technician.
a) Installation of the frequency converter:
- It must be installed in a well ventilated area, protected from damp and direct exposure to the sun and rain.
- Before making the electrical connections, ensure the cable used to provide power to the frequency converter is
not live.
- Carefully verify the electrical data indicated in the specifications plate of the frequency converter before connecting
the electric current.
- The electric power cables to the frequency converter, and from the frequency converter to the pump, must be of the
correct size for the nominal consumption of the motor and the length of cable required, according to the regulations
in force in the country in question. A table with the maximum recommended lengths according to the cross-section
of the electrical cable can be found below.
Section of frequency converter input (mm
E-SPD MT 2200
E-SPD TT 4000
- Each interface cable lenght should be shorter tan 3 meters.
- Use the appropriate cable glands to attach the cable.
- Also ensure that the grid has electrical protection; a high-sensitivity differential switch (30 mA, class A for
domestic applications, Class B for industrial applications) is particularly recommended.
The type B should be installed for all the residual current-operated protective or monitoring from an
inverter up to the supply voltage.
- In addition to the differential switch, it is advisable to install magnetothermal protection and a voltage disconnect
switch to control the power supply to each frequency converter individually.
Ground must be connected properly. If the ground is not connected, the electric shock or fire might be
happened.
b) Installation of pressure units with a frequency converter:
- The multiple pump unit must always consist of pumps that are the same and that, therefore, have the same power
and hydraulic performance. Failure to comply with this point can cause the pump system to malfunction.
- For the frequency converter to work, it is essential to use a pressure transducer (4-20 mA).
1.5 2.5
Maximum distance (metres)
8 19
46 76
6
2
) Section of frequency converter output (mm
4 1.5
Maximum distance (metres)
35 12
120 49
EN
2
)
2.5 4
28 51
81 134