STT113 TOWER CRANE OPERATION AND SERVICE MANUAL
4B 3
3. Power supply capacity and supply voltage requirement
The requirement of the lowest power supply capacity for each type of tower crane is
determined by the hoisting winch. Because of the different hoisting operating
conditions, the requirement of power supply is different. It should be determined by
the lowest power supply
（
KVA
）
for each type of tower crane.
The requirement power voltage of
ST
series tower crane is in accordance with
CE138
and China National Standard:
50HZ, 380V±5%, 60HZ, 440V±5%
. This power
voltage refers to the terminal voltage of Panel L during operating the tower crane. If
the real power voltage is lower than terminal voltage, the capacity of transformer and
the distance should be inspected and adjusted, or increase the cross section of power
supply conductor.
Type of tower crane
STT113
Power supply capacity
44kVA
