TRAINING COURSE:
Pad-Mounted Transformers and Switchgear
Course Category: Transmission and Distribution
Course description: The purpose of this course is to teach the basic principles of operation of pad-mounted transformers and switchgear, the types of equipment that are in common use, and how they are connected. The course also presents the basic principles of pad-mounted transformer and switchgear inspection and troubleshooting and shows an example of how to detect a problem with one leg of a three-phase transformer. At the conclusion of this course, participants should be able to state how pad-mounted transformers and switchgear are used and to describe how they are connected. They should be able to recognize and identify commonly used types of pad-mounted transformers and switchgear. They should also be able to inspect pad-mounted transformers and switchgear, and they should be able to detect a problem with one leg of a three-phase transformer.
Course syllabus:
- Describe the general construction and features of a pad-mounted transformer
- Describe an installation procedure for a three-phase pad-mounted transformer that includes the following steps: site preparation, transformer installation, and testing
- Define “one leg open” and describe its symptoms
- Define “ferroresonance” and describe its symptoms
- Define “off ration winding” and describe its symptoms
- Define “open neutral” and describe its symptoms
- Troubleshooting a Three-Phase Transformer, Part 2
- Describe or demonstrate how the troubleshooting process can be used to isolate the cause of a problem in a three-phase pad-mounted transformer
- Identify two types of pad-mounted switchgear
- Describe the use of pad-mounted to sectionalize and isolate a underground residential distribution (URD) system
- Describe some typical and operational checks for pad-mounted switchgear
- Describe or demonstrate the use of pad-mounted switchgear to sectionalize and isolate equipment in an underground feeder system
*This course is discounted for NATE members.
