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Environment of Rail Mounted Portal Cranes:
1.Power source is three-phase alternating current, rated frequency is 50hz,rated voltage is 380V
2.The temperature in the working environment should be in the scope of -200C +45oC and the relative humidity is no higher than 95%(with dew)
3.In-service,  the wind speed should be no higher than 20m/s;  and out of service wind speed should be (35-42)m/s
4.The installation of the crane rail should according with the requirement of Jt5022 

Crane Selection Guidelines:

1. How much weight do you want to lift?
2. At what radius must this lift take place?
3. What is the maximum boom length?
4. At what speed do you want the load to be raised or lowered?
5. How is the unit to be powered: electric, diesel, customer provided?
6. From what location is the unit to be controlled?