Trends in slip rings

Slip rings provide a reliable transmission of power or signals from stationary cables in the nacelle to rotating equipment in the hub. A basic slip-ring assembly uses solid metal rings and graphite or precious-metal wire brushes, which contact the outside diameter of the rotating metal ring. As the ring turns, electrical current or signal conducts through

Metal fiber brushes could let slip rings last 20 years in wind turbines

DHi (Defense Holdings Inc.) of Manassas Park, Virg. and H&N Electric from Pasco, Washington, recently conducted an up-tower inspection of DHi’s revolutionary blade pitch control slip ring featuring HiPerCon Brand metal fiber brushes (electric brushes) after one year of slip ring operation at PacifiCorp, Inc.’s Leaning Juniper Site in Arlington, OR. The DHi slip ring had operated trouble- and

Morgan Advanced offers new carbon brush grade for improved turbine performance

Morgan’s Electrical Carbon business has developed a new carbon brush grade suitable for wind turbine applications that drastically improves up-time in some of the most demanding conditions. The LL587 carbon brush grade maximizes performance through extended brush life combined with minimal wear to slip rings. Extensive field testing by Morgan Advanced Materials and several wind

DHi sets industry benchmark with UL certification of its wind turbine pitch slip rings

Defense Holdings, Inc. (DHi) is raising the bar for the wind industry, having recently received unrestricted certification from Underwriters Laboratories (UL) for its pitch-control slip rings with HiPerCon metal fiber brushes. With this significant accreditation, DHi becomes: Only the second company to achieve a UL listing for WTG pitch slip rings, The first and only

HEIDENHAIN announces new product specialist for automation division

HEIDENHAIN Corporation announces the new hire of Jonathan Dougherty as the North American Product Specialist, Automation Division. Based in Schaumburg, IL, Dougherty is responsible for automation product support including the company’s rotary encoders, slip rings and resolvers.  HEIDENHAIN markets such products from not only the HEIDENHAIN brand, but also of their RENCO, Leine & Linde

Retaining rings for shallow groove depths

Smalley’s Hoopster Retaining Rings offer an innovative way to retain mechanical components when space is a problem. Hoopsters have a minimal radial projection and a shallow groove depth. Hoopsters are available from .375″ to 3″ or 10 mm to 73 mm in both carbon and 302 stainless steel. The low profile Hoopsters are ideal for

Morgan Advanced Materials offers quality slip rings that ensure superior wind turbine life and performance

Morgan Advanced Materials Electrical Carbon business announces that its quality engineered slip rings, can reduce down time and improve the life of equipment whilst reducing maintenance time and costs. Made with the latest innovations in resin compounds Morgan’s molded slip rings encapsulate all current carrying components, inhibit harmful dust intrusion and contamination, and increase the

Morgan’s slip rings improve turbine life and performance

Morgan Advanced Materials says its slip rings can reduce down time and improve the life of equipment, while also reducing maintenance time and costs. Made with the latest innovations in resin compounds, the molded slip rings encapsulate all current carrying components, inhibit harmful dust intrusion and contamination, and increase the dielectric strength, says the company.

Morgan Advanced Materials slip rings reduce downtime

Morgan Advanced Materials Electrical Carbon business announces that its quality engineered slip rings, can reduce down time and improve the life of equipment whilst reducing maintenance time and costs. Made with the latest innovations in resin compounds Morgan’s molded slip rings encapsulate all current carrying components, inhibit harmful dust intrusion and contamination, and increase the

Noncontacting slip rings capable of kW-level power

Slip rings on generators are expensive and sophisticated high power devices that wear out at least once in a turbine’s expected 20-year life. Recent rethinking of the device makes use of the capacitive-coupling phenomena to transfer power between non-contacting disc pairs that tolerate vibration – a constant companion in turbine nacelles. “Each channel is a