Feature

Energy-efficient inverter motors provide full torque and run cool

The Marathon Blue Max range of induction motors, available from Regal, are designed for use with inverters or variable speed drives and can provide full torque at zero speed.

20/10/2013 13:45:53

Incorporating Marathon’s patented Max Guard insulation system, Blue Max motors can operate with any carrier frequency and any cable length. Suitable for use with open- or closed-loop inverters, a shaft-mounted encoder option is available for the latter. These industrial motors feature a wide constant torque and/or constant power speed range and are performance-matched to most makes of inverter.

A robust cast-iron construction makes these motors suitable for arduous duties in, for instance, chemical plants, paper mills, manufacturing, construction and other demanding environments.

Features of the Blue Max range include: Class H insulation, constant torque from zero to base speed and constant power to 150% base speed and choice of terminal box mounting position.

Foot- and face-mounting options are available, while the shaft bearings are double-shielded.

The continuous duty rating is 40°C ambient, while temperature rise on blower-cooled motors is to Class B. The Blue Max specification includes Class F N/C thermostats (one per phase). The power range is 40-100hp.

Blue Max meets NEMA MG1-1998 and similar requirements for energy efficiency and environmental protection. The range is UL recognised, CSA certified and CE Mark.

Written By Sophia Bell

Sophia Bell is the Group Editor of DPA, Connectivity, and PBSI. She joined the team in 2020 as Assistant Editor after achieving a First-Class Honours BA in English Literature and Film Studies from the University of East Anglia. In her current role, she leads the editorial strategy, driving digital growth and ensuring each title continues to deliver trusted, relevant insight for engineering and manufacturing professionals.