Siemens launches drive to cut harmonics

12 June, 2006

Specifically designed for building-services installation and to deliver excellent harmonic performance is this range of drives from Siemens Building Technologies.

The issue of the generation of power-system harmonics in building-services installations is addressed by the SED2 variable-speed drives and the free HarmonEE software from Siemens Building Technologies. SED2 drives have been carefully optimised for fan and pump application — rather than for general-purpose use in industry. This approach has enabled Siemens to incorporate innovative low-harmonic-technology circuitry to achieve excellent harmonic performance without the need for bulky filters and chokes. These drives are available with ratings from 37 W to 90 kW in IP20/21 versions and 1.1 to 90 kW in IP54 versions. All models incorporate PID controllers and a range of pre-programmed HVAC functions. The HarmonEE software enables users to assess the harmonic performance of an installation incorporating multiple SED2 drives.

Lighting the way

Halesowen College has set a sustainability example for higher education institutions by installing smart lighting as part of its latest environmental initiative, making up to 85% energy savings compared to the previous system.

BESA updates HIU Test Standard

The Building Engineering Services Association (BESA) has announced an important update to its UK Heat Interface Unit (HIU) Test Standard, further strengthening performance benchmarks and supporting the sector’s readiness for incoming heat network regulation.

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