Purpose: The powerhouse crane will be used to handle turbine/generator equipment in the powerhouse, along with handling of other equipment to be transported throughout the powerhouse. Design capacity: To be determined by the Contractor upon procurement of turbine/generator equipment Capacity: 10t-400T Span: 10m-37.5m Lifting mechanism: Drum group fixed on trolley Working environment: -20-40 degree centigrade The main girder is in mail-rail box girder structure. It is welded in overall and formed with one process, thus ensuring rigidity and intensity. Upper camber curve of the main girder is optimized quartic curve to ensure that there is no climbing resistance when the running structure is under full load, thus to avoid overload running of engine and trolley sliding. All mechanical parts are connected with gear coupling. It is easy to install and maintain. High performance engine exclusive for metallurgy. Has high lifting capacity. It is able to meet requirements of frequent use. Bridge structure with high strength provides further guarantee for high lifting capacity. Variable frequency debugging or slow lifting function may be selected according to special requirements of customers, to realize precise location and safe transportation. Uniquely designed linkage platform is characterized as small capacity, easy operation, nice outlook, complete function, safe and reliable. Otherwise, there are many operation modes may be selected. Operation Condition Working temperature: -25-40C, Work class: A3/A4, Power Source: 3pH, 380V, 50Hz or as customer's requirement Performance Feature: 1)Reasonable structure, main girder deflection <1/1000S FEM STD 2)Favorable performance 3)Smooth starting and stopping 4)Safe and reliable traveling 5)Low noise, commodious cabin and good view 6)Convenient maintenance, excellent exchangeability for parts and components 7)VVVF control on driving. Safety feature: 1)Overload protection switch 2)Up/down limited position protection switch 3)Bridge traveling end position protection switch 4)Crab traveling end position protection switch 5)Emergency stop 6)Voltage lower protection function 7)Phase sequence protection function Control method: 1)Pendent 2)Remote control 3)Cabin control 4)Multi-operation Surface pretreatment and Painting: 1)Surface treatment: SA2.5 as per GB8923--1988 (NACE No. 2/SSPC-SP10) 2)Color: Yellow (or as per customer RAL code) 3)Dry film thickness: ~120µ M
