OPERATION & MAINTENANCE OF POWER PLANTS
INNOVATIVE HIGH-CURRENT CONTACT SOLUTION A
t numerous points in switchgears, transformers, circuit breakers, isolator
switches and feedthroughs, we find detachable connections and connectors in which contact elements are used. These elements must transfer extremely high currents, particularly in the event of short-circuits. In the process, they should not only offer flexibility for compensation of dimensional tolerances, but also a reliable connection even after countless mating cycles. Multilam, the novel contact louver technology from Stäubli, offers confidence and reliability for solving this problem. The new ML-CUX from the Multilam flexo line will be of great interest to the power sector. The new solution is the result of
consistent development of the two- component principle. The separation between the electrical and mechanical properties results in a constant low contact resistance and minimal contact
heating, even with constant high load. Furthermore, the ML-CUX is able to withstand extreme current peaks and has a short-circuit current-carrying capacity of up to 4.4kA/cm. This allows a significantly more compact design, so the connectors can be implemented more easily even in smaller systems.
A simple, low-depth rectangular slot is sufficient for the installation; this allows slimmer designs than coil spring contacts but still guarantees a reliable hold in the plug and socket. In the area of energy supply and
distribution, components from different origins are installed together. Those
The socket (left) and plug (right) versions of the new Multilam flexo ML-CUX
responsible are often faced with mechanical problems and have to reckon with large dimensional tolerances, offsets and angular deviations. The Multilam Flexo ML-CUX meets these challenges: thanks to its large working area, it is highly flexible and able to compensate angular and axial offsets. l
For more information visit
www.staubli.com
SMART ACTUATORS FOR POWER PLANT APPLICATIONS
a new platform for smaller actuators in the lower torque ranges. Profox
W
ith the Profox product range, electric actuator manufacturer AUMA offers
Providing fast and precise valve positioning, high flexibility and future-proof interfaces, AUMA’s Profox actuators are ideally suited for challenging valve automation tasks in power plants
actuators are compact, smart, high- performing and cost-efficient. They are ideally suited for high-precision valve control in modern power plants. Built-in intelligence makes Profox equally suited to open-close duty and modulating applications. Adjustable speed ensures fast and precise positioning. Operating costs are low, thanks to high mechanical efficiency and low standby consumption. Innovative diagnostics and Fieldbus and Industrial Ethernet interfaces ensure
future-proof plant automation. The actuators are designed as a modular platform to suit a wide variety of valve types. There are multi-turn versions for torques of 10-100Nm and part-turn versions delivering 32–600Nm. A linear actuator will follow soon. The compact design allows the
actuators to fit tight spaces. IP67 protection (IP68 optional) and AUMA’s unique corrosion protection ensure long life even under the toughest process conditions, at temperatures from –30°C to 70 °C. Profox actuators are simple and
easy to use, with rapid installation and commissioning via pushbuttons or an app. Actuator status is always clearly visible, even from a distance. l
For more information visit
www.profox.auma.com
www.engineerlive.com 23
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