Spring Drives for circuit-breakers up to 800 kV and driving energies up to 12 000 J Key Benefits • Maximum safety • Field-proven reliability • First-class availability • Low total cost of ownership GE makes the most of 80 years of experience in design, material selection, development, engineering, manufacturing and servicing of circuit-breaker drives. Safety First • Pure-spring design, without pressurized oil Utmost Experience • First drives implemented in 1934 • Over 250 000 drives in use Highest reliability • Confirmed by IEC / CIGRE • Field-proven under all operating conditions Longest Life Duration • Negligible maintenance costs • Life-cycle up to 60 years Outstanding Features • Energy stability over decades • Energy independent of temperature, from -50 to +50 °C • Minimum time scattering

FK Circuit-breaker Spring Drives 170 kV live-tank CB with single-pole operation

FK Circuit-breaker Spring Drives

CIGRE Promotes Sprig Mechanisms CIGRE, general report for high-voltage equipment, table IX, provides reliability data for different types of operating mechanism for SF6 high-voltage and generator circuit-breakers. Eight decades of experience are continuously supporting the implementation of total quality throughout the entire spring drive process, from engineering to operation, then after-sales. Such data are summarised in the here-below table: GE's spring mechanisms are approximately five times more reliable than hydraulic and hydro-mechanical spring mechanisms and three times more reliable...