Mastering Medium Voltage Schematics Episode 04

Dear All,

Welcome to the course "Mastering Medium Voltage Schematics". This training starts from a very basic level to advanced level. Focus has been given to delivering practical and hands-on knowledge.

Trainer Introduction:

Your trainer brings over 21 years of experience in operation & maintenance, erection, testing, project management, consultancy, supervision, substation automation, SCADA, and commissioning. With a background spanning power plants, high voltage substations, and HVDC installations, he has worked with renowned organizations such as Siemens Saudi Arabia. He has been involved in over 20 high-voltage substation projects across Pakistan and Saudi Arabia.

His expertise encompasses a wide range of areas including protection systems, substation automation systems, design, testing, and commissioning of power generation systems, high voltage switchgear, protection relays, and control schemes. He has a proven track record of leading testing and commissioning teams for implementing electrical infrastructure projects for industrial clients, including steel and petrochemical industries.

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