MV distribution systems have several advantages over LV distribution systems, but they also have some drawbacks. The decision must be the product of rigorous consideration, with cost and safety as the primary considerations.
The usage of significantly less copper in the form of smaller conductors and fewer sets of conductors, as well as fewer power losses and reduced voltage drop, are all advantages of MV systems. Much greater power capacity is distributed to the load. Larger equipment sizes, greater working clearances necessary around electrical equipment, more training costs, and longer maintenance intervals to repair equipment are among the disadvantages of MV systems.
Despite these benefits and drawbacks, it is sometimes impossible to distribute at LV, in which case MV distribution is used. In such cases, workers’ safety should be prioritized by developing detailed maintenance procedures for MV equipment. It’s also important to think about the safety of non-maintenance personnel.