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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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: . 14 . Gas turbine starting converter Type LCI.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. 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.MEGADRIVE-LCI.ST 3. The motor excited from standstill. These problems can overcome with the aid solid-state «soft» starting equipment which for this reason being used in increasing number applications. 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). These are use variety applications and the technique has proved highly reliable for over years... At rated speed, the machine automatically synchronised the power system and the circuit-breaker for direct connection the supply closed