The company says that the motors can now achieve an efficiency of 94% at 4.5 kW rated motor power. This efficiency is based on Wilo’s high efficiency drive (HED) concept and reportedly surpasses the limits of the upcoming efficiency class IE4 (acc. to IEC TS 60034-31 Ed.1), along with the new EU Regulation coming into force on 16 June 2011 regarding energy efficiency of electric motors.
The HED incorporates an integrated frequency converter combined with ECM technology that offers a control range that is three times wider than conventional electronically controlled pumps. This results in improved adaptability to changes in the power requirement of hydraulic systems. Pluggable IF-Modules are optionally available to make it possible to achieve various interfaces for bus communication. BACnet, Modbus, CAN, LON and PLR mean that all current market standards are supported for integration into the building automation.
The Wilo-Stratos GIGA series is suitable for applications in heating, cold water and cooling systems. The permitted temperature range for the fluid is -20°C bis +140°C and in climate-control applications, the pumps have improved corrosion-resistance due to a cataphoretic coating and condensation drainage that is fitted as standard.
The first high-efficiency pumps in the Wilo-Stratos GIGA series with nominal diameter DN40 and rated motor power values of up to 4.5 kW will be available in September 2011.