1. The traditional civil engineering mode and the combination of switch cabinet are abandoned. The main wiring in the box is directly installed on the rear wall of the box through the support insulator, and the fuse, lightning arrester, voltage transformer (self use transformer), etc. are highly integrated in the handcart, which saves space and facilitates maintenance.
2. The handcart adopts electric (or manual) operation to make the removable parts move between the test position and the working position. The handcart positioning is accurate. Each position is equipped with sensitive and reliable limit switches and positioning holes to ensure that the handcart operation position is in place and reliable. It can be operated locally or remotely.