Power

Weidmüller’s new comprehensive lightning and surge protection VPU series fulfils requirements for protection levels 1, 2 and 3 for power networks. This means full compliance with the current IEC 61643-11 and EN 61643-11 standard being introduced in 2013. As the damage statistics of property insurers have proved, lightning and surge voltages can cause considerable damage to buildings and facilities. Facility operators need to protect their investments with innovative technologies and in...

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Chaz Andrews Of Doepke Explains The Function Of The Solar Inverter Rcm Unit And Separate Rcd Protection Required Under The Wiring Regulations

Some installers are struggling to get to grips with the function of the RCM in a PV inverter and why you need a separate RCDon the output side of the inverter for specific installations. Incorrect specification and installation can lead to costly re-work for the installer, when the local DNO reviews the commissioning pro-form. DNOs have a legal...

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Marrying sustainability with style

A brand new hotel is a metaphorical blank canvas, so in a bid to make it one of the most energy efficient hotels in London, Siemens were consulted. Apparently, just 25% of the total costs in the lifecycle of a hotel are for the concept, design and construction, compared with 75% for its operation. It’s therefore not surprising that the sector is increasingly looking at ways to improve the operational efficiency of its properties. For a new build property, there is an even bigger...

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