Medium-voltage switchgear

with overcurrent protection

The Main Terminal Boxes are used to conduct electrical power to the main current conductors and to create a star point on the opposite side of the generator stators windings. Typically, the cabinets contain measuring current transformers and voltage transformers to protect the generator. They may also include overvoltage protection of generator, optionally with protective capacitors, or a partial discharge measurement system of the generator windings. The cabinets are adapted to the generator design, project by project. It can be one common cabinet for the power output and the star point - MTB & N, or it can be divided spatially into two cabinets MTB part (power output) and N part (star point).