Electricity + Control March 2018

round up

DRIVES, MOTORS + SWITCHGEAR

Gearless conveyor drive for wider range of motors

In July 2017, the pilot project of this solution was installed in col- laboration with Lausitz Energie Bergbau AG (LEAG) in the open-pit lignite mine Jänschwalde, located close to Cottbus, Germany. The new gearless solution was installed on a high capacity (15 000 t/h) discharge conveyor of a bucket chain excavator in parallel with the existing geared drive. Both drives connect to the same pulley shaft to allow for exact benchmarking. The gearless solution has per- formed better in regard to dynamic accuracy and overall efficiency than the existing traditional solution. Enquiries: Visit www.abb.com

Fast-track project MJM Electrical in Phalaborwa recently requested JB Switch- gear to assist with the design, manufacturing and supply of a new 525 V Pit Dewatering Motor Control Centre (MCC) for Foskor’s operations. The existing MCC was damaged during blasting operations, and so it was critically urgent to get a new MCC manufactured without any delay. The new MCC Other advantages include a considerable reduction in the drive sys- tem’s footprint, so it can be installed in smaller spaces, less weight, and a reduction in the instrumentation required to operate the system. The gearless drive design is also more energy efficient, requiring less power, and operates more quietly, thus reducing noise emissions. ABB ’s innovative gearless conveyor drive is available for use on a wider range of conveyor systems. Already proven on larger motors, the newest drive is designed for medium power range motors (1 to 3 MW per motor) to make this technology economically feasible for a broader range of conveyor systems, including the use on mobile equipment in mining operations. The new solution can be applied for both greenfield and brownfield systems, and significantly de- creases the cost threshold for gearless conveyor technology. Fewer parts and new motor technology increase the reliability and efficiency of the overall conveyor system. A permanent mag- net motor specifically designed for mining applications is a core element of this system that contributes to its reliability and ability to perform in the most challenging environments. The gearless conveyor drive system eliminates the gearbox from the drive. This reduces the number of main wear parts, so less maintenance is needed, and lengthens the lifespan of the equipment. The expected lifespan for the drive train increases by more than 10 years when compared to traditional geared systems, to a projected in service life of 25 years.

Any label you need, you find it at BRADY! Durable label constructions and identification solutions can resist ex- treme temperatures, chemicals, pressure or friction. These tested la- bels enable more workplace safety, better troubleshooting, complete traceability and other identification advantages in challenging applica- tions and environments. Get the durable labelling guide and choose your label! Even complex surfaces in challenging industrial environments can be durably identified with a professional identification label. We use

consisted of a 1 000 Amp incomer and three 350 kW DOL pump starters, two of them duty pumps, and one standby. Everything is mounted on a skid and moved around the pit as re- quired. The purpose of the MCC is to keep the pit clear of water build-up during mining operations, espe- cially during the rainy sea- son. JB Switchgear built the new MCC in a record time of just two weeks, ahead of the December shutdown period. Enquiries: Johan Basson.Tel. +27 (0) 11 027 5804 or email info@jbswitchgear.co.za

material science, expertise and worldwide experience in a great number of industries to develop identification labels that stick on clean, rough, oily and powdered surfaces, and that remain legible when exposed to extreme tem- peratures, chemicals, abrasion and pressure. Just like standard

labels, custom labels can also be printed or finalised at any location. Install the firmware update on your custom capable Brady label print- er, load the custom label rolls, manually or automatically add the spe- cific information your label should display, print and identify. Our durable identification labels guide book supports industries in choosing the ideal label for their identification needs. It shows what is possible in the world of labelling and presents solutions that enable companies to easily design and print their own, trusted identification labels. Enquiries: Email robert_kubis@bradycorp.com

10 Electricity + Control

MARCH 2018