Σειρά BA

BA series consists of three phase, asynchronous brake motors totally enclosed fan cooled (TEFC). BA series range starts from 71 up to 225 frame size. The motor brakes in case of power supply failure. The braking action is always secured through a very quick and precise stop assuring a safe and prompt stop in case of unintentional power supply failure. The brake torque remains the same in both directions of rotation and the motor brakes without shaft axial sliding.

As standard the brake is AC 3-phase voltage supply with brake leads connected with motor leads in a single terminal board while on request it is possible to supply the brake separately with a second terminal board or to have a DC brake supply with a built-in rectifier fitted inside the terminal box. The rectifier is provided with over-voltage and radio frequencies emission protection devices. BA series motors tolerate high overloading rate and are capable of withstanding overheating so as to guarantee the best reliability even under tough operating conditions.

All ΒΑ series motors have been designed to be controlled by inverters. The motor winding insulation is class F, while class H is available on request. Motor construction type is totally enclosed externally cooled and IP54 enclosure (IP55 and IP56 available on request).

Motors up to 132 frame size are fitted as standard with a hexagonal hole on the shaft at the non drive end to allow manual rotation, even if power is off. All BA series motors are provided as standard with hand brake release screw.

BA series brake disc has a large lining surface that allows high brake torque, low disc wear and consequently low maintenance cost. The brake torque can be easily adjustable to the desired value just by screwing some nuts. Thanks to its special construction the brake friction surface is self-ventilated on the motor side, permitting a high brake workload and keeping brake time constant. The brake lining material is asbestos free.

BA series motor frame is made of die cast, light metal on motors up to 132 size and the terminal board box, provided with cable glands and plugs, is positioned 180 degrees above the motor support feet. The frame is made of cast iron starting from 160 frame size and the terminal box is located on the right side (drive-end view). Shields and flanges are made of aluminium on motors up to 90 frame size, and of cast iron on motors of 100 frame size and above. As standard feet are frame integrated (they are not simply attached to the frame) on IM B3 mounting (foot mounted) making the motor very sturdy. This feature is very important for those applications where the motor is much stressed during the starts and stops. The brake friction surfaces are made of cast iron as a standard. The brake moving element and the brake coil have a laminated nucleus to reduce electrical losses and to secure a very quick brake intervention.

The BA series cooling fan is fitted between the motor and the braking assembly. The brake moving element and the brake coil have a laminated magnetic nucleus to reduce losses and to allow very fast braking.

BA series main features are its sturdy construction, quick braking action, constant braking time, high number of permissible start/stop cycles also under severe applications, easily adjustable brake torque, low maintenance costs.

Χαρακτηριστικά

  • Brake Motors
  • IEC Metric Motors from 71 to 225 frame size
  • Totally Enclosed Fan Cooled (TEFC)
  • IP 54 enclosure (IP55 on request)
  • F class insulation
  • Continuous Duty
  • 230/460V 60Hz, 575V 60Hz or 230/400V 50Hz for Europe
  • AC and DC Brake
  • Very high brake torque
  • Heavy Duty Cycle
  • Low Maintenance
  • Aluminum frame up to 132 frame size, cast iron frame from 160 to 225 frame size
  • Cast iron flanges starting from 100 frame size
  • Manual brake release screw
  • Hexagonal hole on shaft end for manual rotation
  • cCSAus approved ( mark)
  • mark for Europe