Causes: This occurs when the load current is too high for the equipment. It can also happen when motors start. Knowing how to diagnose and fix electrical faults is key. I'm Thor, an electrical engineer at. Medium voltage switchgear is used for switching medium voltage loads through associated control, measuring, protective and regulating equipment. This operation also involves considerable manual intervention which therefore necessitates the fulfilment of safety requirements laid down in. rom 345kV to 500 KV and 765kV, with plans for voltages in the 1100-1500 kV range. Series capacitor compensation has been employed as well as dc transmission to improve capital return, and now attention is moving toward the application of single and/or s e on single-line-to-ground faults and all. This masterclass course provides a deep knowledge, understanding and analysis of various schematics of an medium-voltage switchgear, such as tripping, trip circuit supervision, interlocking, indication circuits, and many others. Detailed diagrams of common feeder types are included. This guide covers the three primary TCS scheme architectures, provides step-by-step testing procedures for commissioning and maintenance, and.