AC brake motor DF

three-phasewith DC brakewith brake

Description
DF series three-phase brake motors are produced by fitting an electromagnetic disc brake to an A.C. motor. These DF motors feature a double-polarity design that allows operation at two distinct speeds depending on the winding connections applied.

Construction types

• Single three-phase winding in DAHLANDER/YY configuration (single winding) for motors equipped with double polar pairs (2/4 and 4/8).
• Double internal three-phase winding for motors with polar pairs 2/6, 2/8, 4/6 and 6/8.

Polar couples and rotation speeds
POLAR COUPLES - ROTATION SPEED [rpm]
2/4 - 3000/1500
2/6 - 3000/1000
2/8 - 3000/750
4/6 - 1500/1000
4/8 - 1500/750
6/8 - 1000/750

Mechanical and mounting options
These motors are available with B3, B5 and B14 flanges.

Additional information
On specific customer request M.T. Motori Elettrici can supply triple-speed brake motors, supported by its technical department. All M.T. Motori Elettrici motors are manufactured in compliance with IEC international standards.

Characteristics / technical specifications

• IEC sizes: 63 ÷ 180
• Nominal power Pn: 0.18/0.12 ÷ 22/18.5 kW
• Brake type: A.C. current, D.C. current
• Energy efficiency: IE1
• Nominal torque Mn: 0.60/.060 ÷ 99.7/131.4 Nm
• Available polar couples (examples): 2/4, 2/6, 2/8, 4/6, 4/8, 6/8