Electricity + Control June 2016

ELECTRICAL PROTECTION + SAFETY

ROUND UP

Protection system – synergy and perfect integration

The 47 CVX range of Distribution boards are available in bothmodular andmonobloc sys- tems from 160 A to 3 200 A. They are avail- able in both surface or flushmounting types, and in a variety of IP ratings to suit most applications. Thanks to the extractable frame and quick connection of brackets, rails and functional profiles, the 160 A board allows quick assembly. Because the 630 A boards are based on a ‘completely open structure’, board wiring operations are quick and easy. Enquiries: Nelen Govender.Tel. +27 (0) 10 202 3300 or email neleng@acdc.co.za

GEWISS is an international leader in the production of systems and components for low voltage electrical installations. The fact that development is seen as a constant management feature has permitted GEWISS to assert itself as amarket leader, offering an integrated electrical systemwith over 20 000 products for Domotics, Energy and Lighting. Gewiss’s protection system is composed of products which have synergy and perfect integration among each other, such as the innovative 90 ReStart range (automatic reclosing devices), the 90 MCB and 90 RCD ranges (modular circuit breaker for circuit and residual current protection) and the 47 CVX range (metal distribution boards). An integrated range of products which canmeet every need according to the application type, from residential to the industrial and which can guarantee quality and safety in step with market requirements.The advan- tages of GEWISS system are several, practi- cal compatibility of homogenous products, simple and quick planning, installation and maintenance of the system, as well as modern and stylish design. 90 ReStart devices restore power supply quickly from automatic circuit breaker trips, but only after checking the system status. In addition, the Autotest function periodically tests the functioning of the residual current circuit breaker protection without discon- necting the system from the power supply. EJ-series EtherCAT plug-inmodules provide an efficient wiring solution for machines built in large and medium-sized production runs.With newmotion modules, space-sav- ing compact drive technology from Beckhoff is seamlessly integrated into a plug-in mod- ule concept, enabling extremely compact I/O and motion solutions that perfectly match customer requirements.

The range includes two pole and four pole versions. The 90 miniature circuit breaker (MCB) range is made up of three types: • MTC - Compact miniature circuit break- ers, from 2 to 32 A in B and C curve and breaking capacity up to 10 kA • MT - Traditional miniature circuit break- ers, from 1 to 63 A in B, C and D curve and breaking capacity up to 25 kA • MTHP - High performance miniature circuit breakers, from 20 to 125 A in C and D curve and breaking capacity up to 25 kA Available from ACDC Dynamics , the 90 RCD range includes the MDCmonobloc compact residual current circuit breaker with overcur- rent protection, the BD and BDHP add-on modular residual current devices for MT and MTHP miniature circuit breakers and the SD residual current circuit breaker. The 90 AM range consists of auxiliaries for circuit breakers and many modular accessories for protection, command, pro- gramming, measurement and signalling in electric systems. The LST surge protection range guaran- tees excellent protection of loads and power distribution systems.The range includes: • LST surge protection devices • Disconnectable fuse holders • Residual current relay with separate toroid • Motor protection switches EJ-series plug-in modules make it easy to implement a platform concept for large- volume production runs without sacrificing customisation capabilities. The modules, with electronics based on the popular Eth- erCAT I/O system, are directly inserted into an application-specific signal distribution board that transmits signals and power to the individual connectors. Connections via pre-configured cable harnesses replace the expensive installation of individual wires, reducing per-unit costs and minimising the risk of faulty wiring because the EJ compo- nents are clearly coded. Compact drive technology fromBeckhoff, already available in a Bus Terminal form factor for years, is now also available as a plug-in module concept. In combination with a broad portfolio of Beckhoff motors and planetary gear units, three new EJ7xxx EtherCAT plug-in modules now enable especially compact and cost-effective drive

I/O and motion solutions for high-volume applications

solutions. The EJ7047 stepper motor mod- ule was designed for applications in the medium performance range. The device features two inputs for limit switches; the second input can alternatively be configured by the user as an output. This makes it possible to install a holding brake, for example. In conjunction with step- per motors from theAS10xx series, the user can optionally implement vector control, delivering enhanced motion dynamics and reduced power consumption. The EJ7211-0010 servomotor module features high performance in an excep- tionally compact design. This is, in large part, enabled by the integrated One Cable Technology (OCT), which combines motor cable and an absolute feedback system into a single cable.

Enquiries: Kenneth McPherson. Email kennethm@beckhoff.com

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