Fundamentals of Gas Insulated Substations

Fundamentals of Gas Insulated Substations

January 17, 2024 | Online :: Central Time

“Excellent program and speakers” Director, Tecnica Fase, S.A.

“This webinar offered a very good introduction to GIS vs AIS substations for electric utility industry personnel” Technical Consultant, TDS-Transmission & Distribution Services

“This helped me better understand the basics of GIS and helped to get me up to speed with industry developments” – Engineer, Southern California Edison

This is a great course for those with no or limited Gas Insulated Substations (GIS) knowledge as it will provide attendees with an understanding of GIS, including design, construction, and operations.  

Attendees will gain a wealth of knowledge about gas insulated substations including:

  • Overall station design
  • Fundamentals of SF6 gas
  • Pros and cons of going with GIS
  • Gas insulated stations vs. air insulated stations
  • Applications for GIS 
  • Construction, testing and commissioning of gas insulated substations

Register today for this intensive one-day course taught by experts from Mitsubishi Electric that will greatly enhance your understanding of GIS.

Learning Outcomes

  • Describe the components and equipment that make up a GIS
  • Discuss the differences between gas insulated stations and traditional air insulated stations
  • Review the fundamentals of the gas used and its alternatives
  • Expand on the engineering and design considerations for gas insulated station
  • Identify what is involved with testing, shipping, and installation of equipment
  • Review project cycle, cost considerations, and reliability of GIS
  • Describe GIS monitoring systems and applications for GIS



Wednesday, January 17, 2024 : Central Time

8:00 – 8:30 a.m.
Log In and Welcome

12:00 – 1:00 p.m.
Lunch Break

8:30 a.m. – 5:00 p.m.
Course Timing

    Definitions and Advantages/Disadvantages

    • Air Insulated Substation (AIS) vs. Gas Insulated Substation (GIS)
    • Clearance differences between GIS and AIS
    • Differences between indoor and outdoor GIS
    • GIS Pros and Cons

    GIS Components

    • Circuit Breakers
    • Switches
    • Gas Insulated Bus
    • Ancillary Devices
    • Terminations/Interfaces
    • Transformers
    • Control Cabinets
    • Identifying the Components
      • Gas Zones
      • Cable Feeder Unit
    • Diagrams/Schematics

    Fundamentals of SF6 and Gas Characteristics

    • SF6 Definition and Properties
    • Gas Density Gauge
    • SF6 Sealing Systems
    • Gas Zones and Buffer Zones
    • Safe Handling
    • Foreign Material Exclusion
    • Leak Detection Methods
    • SF6 Seal System

    Gas Circuit Breaker

    • Arc Physics and Interruption Process
    • Breaker Specification Parameters
    • Breaker Control
    • Breaker Monitor
    • Breaker Components

    Switches (Disconnect, Ground and Fast Acting Ground)

    • Types of Switches
    • Identifying the Components
    • Switch operators
    • Viewports

    Current Transformers, Voltage Transformers and Surge Arrestors

    • Identifying the Components
    • Internal and External Current Transformers
    • Voltage Transformer
    • Surge Arrestors

    Gas Zones

    • Identifying the Components
    • Barrier Insulators
    • Maintenance and Safety Considerations

    Additional Components

    • Bellows
    • Particle Traps
    • Terminations
    • Insulators
    • View Ports
    • Platforms
    • Gas Insulated Bus
    • Rupture Disks
    • Buildings
    • Local Control Cabinets

    Grounding and Bonding

    • Overview
    • Dead Tank Design
    • Leveling
    • Grounding Wire
    • Bonding Locations and Details

    Control Cabinets

    • Types of Cabinets

    Conduit Design

    • Types of Conduit
    • Installation Methods/Types
    • Wiring Design

    Seismic Considerations


    Factory Testing





    • Steps of installation
    • Field Testing and Hi-pot Testing

    GIS Project Cycle

    • Review of all milestones in project cycle

    Gas Monitoring Systems


    Patrick Abruzzese, GIS Product Line Manager, Mitsubishi Electric Power Products, Inc.

    Mr. Abruzzese is a resident of the Pittsburgh, PA area where he has lived and worked for the past fifteen years.  After his tenure in the United States Marines, Mr. Abruzzese attended the University of Pittsburgh where he earned a Bachelor of Science degree in Engineering.  He began his professional career at Westinghouse Electric in their nuclear power plants division in 2011, continuing to Matrix PDM Engineering in early 2012 as a design engineer.

    Mr. Abruzzese entered the power transmission industry at Mitsubishi Electric in 2013.  He now serves as the Gas Insulated Substation (GIS) division Product Line Manager creating turnkey solutions for utility customers in the United States.

    Brenda Wagar, GIS Product Line Manager, Mitsubishi Electric Power Products, Inc.

    Ms. Wagar attended the University of Pittsburgh where he earned a Bachelor of Science degree in Engineering and joined MEPPI in 2005 as a project manager of gas insulated substation and static var compensator projects. This work has included managing multiple contracts and subcontracts, planning/scheduling of engineering, procurement, and installation, and keeping communication flowing from customers through field personnel. Her current position is as the GIS Product Line Manager at the company.

    Online Delivery

    We will be using Microsoft Teams to facilitate your participation in the upcoming event. You do not need to have an existing Teams account in order to participate in the broadcast – the course will play in your browser and you will have the option of using a microphone to speak with the room and ask questions, or type any questions in via the chat window and our on-site representative will relay your question to the instructor.

    • Microsoft recommends downloading and installing the Teams app if possible. You may also use the Edge browser or Chrome.
    • You will receive a separate email with a unique link to a personalized landing page which will include links to join all sessions of this event.
    • If you are using a microphone, please ensure that it is muted until such time as you need to ask a question.
    • The remote meeting connection will be open approximately 30 minutes before the start of the course. We encourage you to connect as early as possible in case you experience any unforeseen problems.


    Please Note: This event is being conducted entirely online. All attendees will connect and attend from their computer, one connection per purchase. For details please see our FAQ

    If you are unable to attend at the scheduled date and time, we make recordings available to all attendees for 7 days after the event


    Fundamentals of Gas Insulated Substations

    January 17, 2024 | Online
    Individual attendee(s) - $ 995.00 each

    Volume pricing also available

    Individual attendee tickets can be mixed with ticket packs for complete flexibility

    Pack of 5 attendees - $ 3,980.00 (20% discount)
    Pack of 10 attendees - $ 6,965.00 (30% discount)
    Pack of 20 attendees - $ 11,940.00 (40% discount)

    Your registration may be transferred to a member of your organization up to 24 hours in advance of the event. Cancellations must be received on or before December 15, 2023 in order to be refunded and will be subject to a US $195.00 processing fee per registrant. No refunds will be made after this date. Cancellations received after this date will create a credit of the tuition (less processing fee) good toward any other EUCI event. This credit will be good for six months from the cancellation date. In the event of non-attendance, all registration fees will be forfeited. In case of conference cancellation, EUCIs liability is limited to refund of the event registration fee only. For more information regarding administrative policies, such as complaints and refunds, please contact our offices at 303-770-8800




    EUCI is accredited by the International Accreditors for Continuing Education and Training (IACET) and offers IACET CEUs for its learning events that comply with the ANSI/IACET Continuing Education and Training Standard. IACET is recognized internationally as a standard development organization and accrediting body that promotes quality of continuing education and training.

    EUCI is authorized by IACET to offer 0.8 CEUs for this event

    Requirements for Successful Completion of Program

    Participants must log in and be in attendance for the entirety of the event to be eligible for continuing education credit.

    Instructional Methods

    Case studies, PowerPoint presentations, and group discussion will be used in this event.

    Upon successful completion of this event, program participants interested in receiving CPE credits will receive a certificate of completion.

    Course CPE Credits: 9.0
    There is no prerequisite for this Course.
    Program field of study: Specialized Knowledge
    Program Level: Basic
    Delivery Method: Group Internet Based
    Advanced Preparation: None

    CpeEUCI is registered with the National Association of State Boards of Accountancy (NASBA) as a sponsor of continuing professional education on the National Registry of CPE Sponsors. State boards of accountancy have final authority on the acceptance of individual courses for CPE credit. Complaints regarding registered sponsors may be submitted to the National Registry of CPE Sponsors through its web site:


    Who Should Attend

    This course is designed for new or prospective utility professionals interested in gas insulated substations; however, other substation stakeholders may find a benefit from attending. This course will attempt to provide a robust education on GIS installations including relevant policies, practices and could be of interest to professionals in other areas of the utility such as communications, community engagement, and safety.