Product  Character

This feedback unit is three-phase soft-switching inverter of direct current. It is fit to fix with direct current  strap system and equip with single inverter device. 
when Pumping unit  adopts  direct current strap system power supply or many inverter device the definite purpose DC strap of drag pumping unit ,  it  can  save system cost. 
When  pumping unit is driven by single frequency variation energy saving device, the energy saving ration can be increased with inverter.