Frekvenční měniče Katalogy, manuály (EN+CZ)

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Vydal: ABB s.r.o, ELSYNN Autor: ABB ELSYnn

Strana 813 z 825







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MW Maximum speed: 3600 rpm (+5 %) Output frequency: (+5%) Operation The synchronous machine started with a variable frequency the converter in the same way converter-fed variable speed motor (see MEGADRIVE LCI).MEGADRIVE-LCI..8 MW Main features • starting current limited the rated machine current less • provides facility for braking the machine • sequential starting several machines possible with single soft starter • microprocessor control system Technical data Typical power range: . The motor excited from standstill. At rated speed, the machine automatically synchronised the power system and the circuit-breaker for direct connection the supply closed. Gas turbine starting converter Type LCI. Typical applications Starting of • gas turbines • synchronous compensators • refiner motors • motor/generators pump storage power plants • large compressors and blowers for: chemical processes wind tunnels blast furnaces References World-wide, ABB has installed more than 360 solid-state converters starters with ratings between and MW. These are use variety applications and the technique has proved highly reliable for over years.ST Starter for synchronous machines Starting large synchronous machine on-line can prove problematical either because of the inrush current because the thermal stress hot spots the rotor surface while running up.8 Rated power: 3.ST 3. 14 .. These problems can overcome with the aid solid-state «soft» starting equipment which for this reason being used in increasing number applications