Safe and sound in the Oslo Opera
To meet audio and safety concerns, Nexans redesigned, retested and developed new installation techniques for a 1 kV power cable which limits electromagnetic interference, as well as offering improved fire performance.
The Oslo Opera House is the most stately Norwegian building since the Royal Palace (1840) and Trondheim Cathedral (1070-1300). The architects and acoustic designers of this minimalist structure wanted it to be safe for artists, stagehands and the public, while delivering crystal-clear wireless sound, unperturbed by electromagnetic interference.
A standard building cable was redesigned (reinforced screen) and grounded in a new way to assure electromagnetic compatibility (EMC). Other buildings with sensitive equipment (hospitals, broadcasters, airports) are also interested in the new cable.
Practice makes perfect
We took a standard product and pushed tests to their limits. After modifications and retesting, we reached the final opera design. Aware that meeting strict specifications went beyond cable, we studied installation conditions and redesigned new grounding procedures, which further enhanced performance. An added bonus was public safety. The halogen-free (HFFR) cables are both fire-retardant and fire-resistant, meaning that they generate low smoke and noxious gases, and continue to provide emergency power during a fire.
Touch of majesty
With 38,500 m2 of floor space, the Opera contains 1,100 rooms, including a 1,350 seat main concert hall, and a smaller one of 400 seats. It was opened by King Harald on 12 April 2008. Nexans is proud to have been chosen for such a prestigious national project.