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Well system with single-phase submersible pump and VFD
 

Variable-frequency drives (VFD) are also known as AC drives, adjustable-frequency drives (AFD), variable-speed drives (VSD) or inverter drives.

The water passage VFD characterized by ease of installation with elements. It is equipped with a pressure sensor that acts a transducer inside the device. 
The right size VSD will save you money and also make sure that the system is energy efficient. With an inverter drives, the pump is operated when the tap is opened and calibrated based on the actual water requirement
 (by modulating the power according to actual needs. Using a adjustable frequency drives will save you from 30% to 50% of electricity per year).



Click on the icons of the system!


Submersible pump with external condenser/capacitor

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Compared to the above case, if the submersible pump does not have the external condenser, the connections can be made directly as shown in the following link (see diagram);




There are three types of inverter drives for electric pumps:

1)Single-phase/single-phase VFD (
M/M inverter drives):

Pratical example: ACTIVE.DRIVER.MM.1,1 
The VFD is powered by a single-phase 230Vac power supply - The electric pump is also  powered by a single-phase 230Vac power supply.


2)Single-phase/three-phase VFD (M/T inverter drives):

Pratical example: ACTIVE.DRIVER.MT.1,0 
The VFD is powered by a single-phase 230Vac power supply - The electric pump is powered by a three-phase 230Vac power supply.
Warning! we said 230Vac three-phase so that all electric motors that are normally powered by three-phase 400Vac can be adapted for this power supply
, while the submersible pumps must specifically request to be powered by 230Vac three-phase.


3)Three-phase/three-phase (T/T inverter drives):

Pratical example: ACTIVE.DRIVER.TT.3,0 
The VFD is powered by a three-phase 400Vac power supply - The electric pump is powered by a three-phase 400Vac power supply.


Click here to view the three different types of systems
 



 

How does the Speedmatic Coelbo inverter work?                                                     Speedmatic Coelbo inverter

inverter per pompe sommerse regolazione pressione dell acqua aumenta la pressione dell acqua di casa in sicurezza

 

You might be interested in:

Variable-frequency drive (VFD) for pumps
Submersible electric pumps 
Submersible monobloc electric pumps 
X-power watercooled submersible pumps

 

How to choose my submersible pump?
How to create my water system with pressure tank?

How to pressurize an artificial lake?

How to install a close-coupled pump?
How to install a submersible pump inside a tank?


Damages and problems in water systems 
Stray currents and submerged pumps

Water system: single-phase submersible pump with variable frequency drive

Water system: single-phase submersible pump with pressure controller
Water system: single-phase submersible pump with tank vassel

 

 

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