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Lightning strike solution from SIPOS

17 May 2012

An advanced actuation solution has contributed to a lightning strike protection initiative at a wastewater treatment project located at Denmark’s Port of Aarhus. Designed to provide high standard potable water, single phase actuators from SIPOS Aktorik play a key role in the scheme’s innovative storm protection solution.

Managed by the Aarhus Municipality, the major project includes basins and pipes constructed by Aarhus Water A/S to collect sewage and rainwater. Consideration was given to the fact that lightning could take the WwTW out of operation: actuation technology was therefore required to re-direct water to collection basins that can be emergency operated without power from the network.

Commenting on the need for innovative and effective actuation, a Technical Specialist for Aarhus Water, Mr. Morten Nygaard, said:

"In the event of a lightning strike power may be lost and, if this happens, we must be able to continue to operate the penstocks and valves. We therefore had to use penstocks, gatevalves and drives that were 100% reliable, even without power.

“Grønbech & Sønner delivered the solution that comprises several single phase SIPOS actuators for ON/OFF and modulating service. Equipped with frequency converter, SIPOS’ actuators have the advantage of having very low starting current, making them ideally suited to Uninterruptable Power Supply (UPS).”

All SIPOS actuators delivered for the Aarhus project meet IP 68 standards and are further protected as they are mounted in closed wells beneath Aarhus' roads and pavements. Supplied with PROFIBUS interface, a number of actuators are equipped with FO technology to transmit optical signals. Other manufacturers’ flow meters and level gauges can be connected to the SIPOS control unit, which transmits signals via PROFIBUS to the SCADA system.

SIPOS Aktorik – the manufacturer and global supplier of specialist and standard electric actuators.
www.sipos.de

SIPOS Aktorik GmbH, Im Erlet 2, D-90518 Altdorf, Germany Tel. +49 (0) 9187 / 9227- 0 Fax +49 (0) 9187 / 9227-5111 Email info@sipos.de
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