Turbine electrical protection and disconnect products are used to protect the turbine’s equipment from electrical damage caused by faults or other failures of one or another system. They are also used to safely disconnect the turbine to enable maintenance or service within the turbine.
ABB’s Arc Guard system provides arc fault protection for medium voltage switchgear, transformers and low voltage switchgear panels. The modular system provides fast protection, using optical sensors and optical communication to monitor up to 30 sensors connected in the system. It has a functional safety rating of SIL2. The system can be wall or DIN-rail mounted.
− Functional safety SIL2
− Increased safety
− Full text display
− Up to 30 detectors can be connected
ABB products and solutions for turbine safety systems include safety controller and safety relays for machine safety, as well as various monitoring and protection products.
ABB contactors offer the most modern design on the market, and provide a coordinated and tested solution with ABB breaker products. The contactors are highly reliable and can handle large variations in control voltage. A low voltage ridethrough version works without a separate UPS for control voltage.
− High current ratings, up to 2,050 A
− Electronic coil is less sensitive to voltage drops
− Low voltage ride-through version available
− Modern, compact design
− Easy installation, wiring and maintenance
Tmax moulded case circuit breakers and Emax air circuit breakers are designed for standard wind turbine and variable frequency (0 to 200 Hz) applications. They are used for main circuit and sub distribution protection, up to 6,300 A. They are available according to the main international certifications and standards, including IEC 60947, UL 489, UL 1066, GOST and CCC.
Modular protection system and DIN-rail products
ABB’s modular SMISSLINE plug-in system of protection products uses integrated bus bars to reduce system wiring complexity, installation time and space. Both replacement of devices and expansion are easily managed. SMISSLINE devices include supply terminals, miniature circuit breakers, residual current operated circuit breakers, surge arrestors, switch disconnectors, motor protection circuit breakers, auxiliary and signal contacts.
In addition to the SMISSLINE products, ABB products include traditional DIN-rail mounted high performance miniature circuit breakers, miniature circuit breakers, residual current devices, surge protective devices, and electricity meters.
Insulation monitoring relays
Wind turbines are unearthed systems, and both 3-phase mains or DC mains may be monitored for insulation faults. ABB’s monitoring relays are used to directly measure the insulation resistance in unearthed AC and DC electrical systems with voltage levels up to 690 VAC and 1000 VDC.