New energy-efficient traction machines

The new ECO series from WITTUR Electric Drives GmbH


The Servogearless” traction machines manufactured by Wittur Electric Drives GmbH, a Wittur Group Company located in Dresden (Germany), have been submitted to a complete electro-magnetic redesign.
They are now available in a new ECO version with lower electrical current consumption (current consumption has been reduced by as much as 20% depending on the application). Another benefit of the new ECO series is that smaller inverters can be used in most cases.
The Servogearless” range includes two different models: WSG-S1 for loads of up to 630 kg (2:1 suspension) and WSG-S2 for loads of up to 1200 kg (2:1 suspension).
The other outstanding features of the “Servogearless”traction machine that have been kept in the new ECO version are:
  • Synchronous 16-pole motors
  • Compliance with Lift Directive 95/16/EC and EN81-1 specifications
  • Rated speeds from 0,6 up to 1,6 m/s (suspension 2:1)
  • Exchangeable traction pulley for steel rope applications and different groove profiles available as options
  • Low noise level
  • Adaptable options regarding voltage, speed, torque, measuring system, braking torque and traction sheave parameters
  • Integrated fail-safe brake, type-tested to EN81-1
Wittur customers will benefit from this new design on all orders of Servogearless traction machines placed from July 2009 onwards.

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