The main function of double layer busbar hanger is to fix and connect busbars when installing double layer busbar. Working procedure is that once one busbar is finished, the hanger will lift the busbar up and then the next busbar will enter into the installation area. After the second busbar is ready, hanger will lift the first busbar on the second busbar in convenience of fixing and installation. The kind of lifting mechanism has two options: electrical manner and pneumatic manner.