Resilient cable for wind turbines

Resilience Cables for wind turbines are UL and Wind Turbine Tray Cable (WTTC) approved, and NFPA 79 (12.2.2) rated for constant flex and high performance. The cables, guaranteed to perform in harsh environments, ship in five days without minimum order length or quantity. Resilience Wind Turbine Tray Cables support needs in the nacelle for low-voltage control, data, communication, and exposed-run power applications. The cables have a torsional and bend high-flex-life, and exceed the developer’s cold-bend test at temperatures as low as -40°C. Highly oil resistant (Oil Res I and II) and FT4 flame rated, 6 to 18 AWG Resilience Cable is available in AWM 300V, 600V, and WTTC-rated 1,000V standard configurations with options for customization to support evolving equipment. Resilience Cable is TC-ER (tray cable, exposed-run) rated and WTTC UL 2277 compliant. Also available: Cat5e cable, a UL-approved, rugged high-flex, low-voltage control cable in 18 to 26 AWG.

Northwire Inc.

Northwire.com

Lapp introduces high performance tray cable for wind turbine

Florham Park, NJ – Lapp, introduces its highest-performance UL-listed tray cable, OLFLEX®
FORTIS. This product meets UL-1277 tray cable requirements, as well as providing industry-leading oil resistance and coldtemperature performance. It is also rated as a CSA tray cable (CSA C22.2 No. 230).

OLFLEX® FORTIS meets all requirements of UL-2277 for 1000V Wind Turbine Tray Cable (WTTC). The excellent oil
resistance is valuable for applications in wind turbine nacelles, and torsion resistance makes it perfect for cables in wind turbine
towers. Excellent cold-weather resistance allows OLFLEX® FORTIS to be used in wind turbines installed in arctic climates.

OLFLEX® FORTIS also offers outstanding performance at low temperatures. Excellent cold-temperature toughness and
flexibility make OLFLEX® FORTIS perfect for cold-weather installations or refrigeration projects. OLFLEX® FORTIS uses fine
conductor strands for superior flexibility during installation. This conductor also allows the product to be used in applications
with limited motion, like the torsion movement of cables in wind turbine towers. The copper core is sized for dual-rating to North American (UL) and European (VDE) standards.

OLFLEX® FORTIS meets UL’s OIL RES I & II as well as UL AWM 21098, allowing application in environments with long-term
oil exposure. OLFLEX® FORTIS has FT4 flammability resistance and passes the same crush and impact tests as armored
Metal Clad (MC) cables. The combination of outstanding oil resistance, mechanical toughness and tray rating allows it to be
used on machine tools, cable trays, and exposed runs between machines and trays.

Lapp Group

HVDC cable could trim most grid losses

High voltage dc transmission lines are one way to reduce the amount of power lost in transmission grids from the current average of about 8% to an estimated 1 to 2%, according to Wolfgang Dehen, chief executive of Siemens’ energy unit.

Traditional lines typically lose 8% of power in transmission, leading to higher costs and lower earnings for energy companies. New technology, such as high-voltage direct current, trims the amount of power lost so associated costs also drop, according to Dehen.

He says it is possible to connect cities with distant renewable wind and water farms, and cited the 2,000 km HVDC transmission lines under construction in China. The line will link the Xiangjiaba hydro-electric power plant in the south west to Shanghai on the north-east coast by year’s end. “It’s definitely a higher cost cable, but it’s the only way to bridge the distance and transport large amounts of power from a generation center to users,” he says.

145 kV double-circuit cable connects wind farm to mainland

ABB, Zurich, Switzerland, will supply, install, and commission 116 km of underground cable and 56 km of submarine cable, to strengthen the existing transmission grid and allow using more wind power from the Rødsand II offshore wind park which will be commissioned late 2010. The 145-kV cable is intended to manage overload and has a double-circuit option which helps secure power transmission even if the cable gets damaged. The cable will contribute to Denmark’s goal of 30% renewable energy consumption by 2020.
“This shows how ABB technologies are helping integrate renewable energy, thereby letting more wind power flow into electricity systems”, says Per Haugland, global head of ABB’s Grid Systems business.

This cable flexes at (Brrrr) -40C

The Olflex Control Cold cable is built to works in the worlds most frigid conditions, down to -50C in some cases. The cable, from Lapp Group USA, Floram Park, N.J., is approved for -50C to 90C installations. The design has been tested for impact to UL/CSA at -40C and UL/CSA cold bend testing at -50C. (-40C flexible and -55C stationary). Furthermore, the cable, approved for exposed runs, is tray rated per CSA TC FT4. The cable features an advanced oil, chemical, and abrasion resistant PVC jacketing.

Cable construction includes finely stranded and bare-copper conductors, blended PVC and nylon insulation, and a specially formulated black PVC jacket. The PVC compound passes the -50C MIL-DTL-915C figure-eight motion test and -55C UL cold impact. Recommended applications are in wind energy, forestry equipment, oil and petrochemical equipment, cold temperature storage and packaging facilities.