The waste water treatment plant in Tunis, which is operated by the Tunisian public enterprise Office National de l'Assainissement (ONAS), supplies approx. 2.5 million people in the metropolitan area with process water. To enable the bacterial decomposition of dirt particles, the waste water needs to be oxygenated by constant churning. Two large geared motors propel the mixers around the clock. In the outdoor facility, temperature can drop to -5 °C in winter, and rise to 45 °C in summer. The present text discusses the need to consider not only performance but also the total cost of ownership.

Frankfurt Airport is expecting a steep rise in the volume of both freight and passenger traffic. The new northwest runway has just become operational, a new terminal is in the planning stage, and in autumn 2012 the new A-Plus pier will be opened – increasing the number of A380 megaliners that can be processed simultaneously. In order to keep luggage loading time under 45 minutes even in the face of more air traffic and tightened security measures, efficient and highly reliable handling technology is required. The extensive baggage handling system at the new pier, supplied by the BEUMER Group, is driven by geared motors from NORD DRIVESYSTEMS.

NORD DRIVESYSTEMS presents a package of drive technology innovations for high hygiene applications. A new family of two-stage helical bevel gearboxes has been designed for easy and residue-free cleaning. The washdown gear units feature no indentations or dead spaces where dirt or liquids could accumulate. Due to especially smooth surfaces, cleaning liquids can easily wash off in all installation positions. The systems withstand frequent intense, aggressive cleaning with acids and alkaline solutions. Manufactured from die-cast aluminum, they resist corrosion far better than steel models.

NORD DRIVESYSTEMS has extended its SK 200E family of decentralized drive solutions with a new size 4 inverter with a rated power output from 11 to 22 kW.

related tasks without external controller

Despite the introduction of energy efficiency classes IE2, IE3 etc. and the subsequent information that is now available, finding the most resource-efficient drive solution is not easy. A simple catalog based choice will often miss out on potential savings and therefore motors should be carefully selected according to the actual load profile of the application. To avoid inefficient drive specifications, NORD Drivesystems concentrates on power reserves which are derived from various sources. Firstly, the power a motor can generate in compliance with its temperature class is higher than the rated output as given in the catalog and on the motor type plate. Secondly, performance classes rise gradually; for a 3.7 kW output, for instance, it takes a 4 kW motor. Many customers will even select the next motor in size. This kind of “bigger is better” approach is anything but efficient.

In recent years, the German drive technology manufacturer NORD Drivesystems has been very active in the steel industry in China and India. NORD has supplied 2,500 geared motors to the Shanghai Baosteel Group Corporation for a heavy plate mill in Pudong which produces, amongst others, sheets for the ship building industry.

NORD-sponsored racing team successful in its first race in Australia