NRG Systems

Mounting Boom | Antenna

Mount Thies FCA anemometers on NRG 50m and 60m XHD TallTowers in compliance with Annex G of the IEC 61400-12-1 Ed. 1 (2005) and Ed. 2 (2017) standards with this antenna boom.

  Antenna, 50/60m, Thies (#12801)
Boom type Thies Anemometer mounting boom for top of NRG 50m and 60m XHD TallTowers.
Applications Wind speed measurement compliant to IEC 61400-12-1 Ed. 1 (2005) and Ed. 2 (2017), including power performance testing.
Sensor compatibility Thies FCA Anemometer
Tower compatibility
  • NRG 50m XHD Talltower
  • NRG 60m XHD TallTower
  • Boom attaches to tower with galvanized steel U-bolts.
  • Anemometer mounts to stem with set screws.
Tools required
  • 9/16" combination wrench
  • 9/16" deep socket & ratchet
  • 1/8" hex key or 1/8" hex key socket
  • 3mm hex key
Lifespan 2 years +
Boom diameter Boom: 48.3mm (1.9")
Stem: 33.4mm (1.3")
Offset distance Sensor positioned above tower center point.
Offset height Anemometer cup position:
  • 50.4m on NRG 50m XHD TallTowers
  • 60.2m on NRG 60m XHD TallTowers
  • 0.83m above mounting stem knuckle (both tower types)
  • 1.86m above top of tower (both tower types)
Boom Boom: Aluminum
Stem: Aluminum
U-bolts Galvanized steel

NRG Systems • 110 Riggs Road • Hinesburg, Vermont 05461 • +1 802-482-2255 •