Mastering Medium Voltage Schematics Episode 04

Dear All,

Welcome to the course about "Mastering Medium Voltage schematics". This training is start from very basic level to advance level. Focus has been given to deliver the practical and hands on knowledge.

Trainer have over 18 years of field experience and has worked at 11/132/220/500kV Substation, 1263MW power plant, 660kV HVDC system.  worked with several companies, SIEMENS, ABB, GE, SEC, KE, WAPDA, NTDC, ARAMCO, SABIC, MARAFIQ. Trainer has given hundreds of trainings online and offline, so it will be great to join this training and take advantage of field experience.

This online course is part 04 of the Mastering Medium Voltage Switchgear drawings.  In this part we have covered the following topics.

• Explained Incoming Single Line diagram.

• Short circuit rating, continuous rating

• Low Voltage panel front view

• Capacitive Voltage indicator

• Incoming Feeder Trip Circuit 1

• Incoming Feeder Trip Circuit 2

• Incoming Closing Circuit

• Tripping from OC relay

• Tripping from BB relay

• Close Block Circuit

• Protection relays close block contacts.

• Incomer earthing switch interlocks.

• Incoming feeder interlocks with upstream circuit breaker

• Indication circuit

• Single Point and double point indications

• Contact multiplication circuit.

• Where contact multiplication is allowed and where it should be avoided

• DC supply supervision circuit

• What is fuse fail relay & how it function

• VT distribution circuit

• Incomer interlocking circuit

• DC loop & loop supervision

Best Regards