VRU1 and VRU3 lead-in distributors are designed to receive, distribute, and meter electric power of three-phase alternating current with frequency of 50 Hz and voltage of 220/380 V. They also protect the lines against overloading and short circuits.
The lead-in distributors are constructed with unilateral maintenance panels and can be single- or multipanel. VRU3 panels are designed to replace VRU1 panels and feature optimized component arrangement, as well as decreased dimensions, weight, and metal intensity. The LID bus system can endure initial short-circuit current of 10kA.
According to their function, the LID panels can be classified as:
- lead-in panels;
- distribution panels;
- lead-in distribution panels.