Quality Wins Project of the Year

Specifications Number of units: 48 Rise: 4,175-12,024 mm Inclination: 30° Pallet width: 1,000 mm Speed: 0.5 mps for < 9,000-mm rise; 0.65 mps for > 9,000-mm rise Arrangement: Single Working condition: Reversible Flat step: Three Power supply: 220/380 V at 50 Hz, three-phase Steps/pallets: Die-cast aluminum step, silver/gray powder coated Corrosion protection main truss: Galvanized Bottom plate: 5-mm galvanized bottom-plate soffit Balustrade: 2-mm 304-ga. stainless steel Skirt: 3-mm steel sheet with black anti-friction coating for indoor escalators; 2-mm 304-ga. stainless steel for outdoor escalators Combplates and cover plates: Ribbed aluminumwith black grooves Handrail: Black with nylon lining Handrail guide rail: Stainless steel Drive: Wormgear with flanged IP54VVVFmotor, duplex chain Step-chain lubrication: With lubrication device Standard: EN 115-2004 Control: programmable-logic controller with diagnostic device and fault display Radius of transition: Bottom: 2,000 mm, top: 2,600 mm for R ≤ 10 m escalators; bottom: 2,000 mm, top: 3,000 mm for R > 10 m escalators Protective covers: Included for step and drive chains, and motor flywheel Contacts: 10, voltage free (in controller) Fault display: One in interior decking profile top Cable: Halogen free Key switches: Both landings Brakes: Brake function indicators and auxiliary brake on main shaft for all units Credits Owner: Istanbul Metropolitan Municipality Client/contractor: Alarko Makyol Joint Venture Consultant: Yüksel Proje Uluslar arası A.S¸ . Metro system operator: Ulas¸ ım A.S¸ . Equipment manufacturer: ThyssenKrupp Airport Systems Co. (Zhongshan) Ltd. Equipment installer: ThyssenKrupp Elevator Turkey Head of project management: Volkan Sofuoglu of ThyssenKrupp Elevator Turkey

tion in both directions. Working 20 hr. a day and seven days a week, the product’s operational life is estimated at approximately 25 years. Six of the units are designated “class II,” while the remaining 42, located on the inside of the station, are designed for indoor use. All units are equipped with variable-voltage, variable- frequency (VVVF) energy frequency converters. VVVF saves energy by reducing speed when no passengers are being carried. The moving step band permanently signals the escalator is ready, and a light barrier in the skirt con- trols the speed. When a passenger walks through the light barrier, the escalator switches from idling to nominal speed. With VVVF, energy consumption of the units can be decreased by significant percentages. Hacıosman Station’s seven floors necessitated the es- calators’ rise between 4,175 and 12,024 mm. Those with a rise of up to 7,000 mm were installed without interme- diate support, while one support was used for units with a 7,000-12,000-mm rise, and two supports were used for those with a higher rise. The project was also made unique due to it being the largest order for one station in the Istanbul Metro, and short delivery and installation time, with work completed in May 2011. c

January 2013 | ELEVATOR WORLD | 59