January 2013
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ELEVATOR WORLD
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59
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.
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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
