RedVector RV-6034

Transformers III - Connections

Transformers III - Connections

2 hrs. Online Course

Level: Advanced

Item#: RV-6034

SME: Vector Solutions Commercial

This 2-hour interactive online course is the third in a series of courses on electric distribution transformers. In this course, we review the application of single-phase transformers in both single-phase installations and three-phase installations. Other factors such as the available fault current at the secondary of a transformer are reviewed as well as how ferroresonance impacts the operation of distribution transformers.

The course includes a multiple-choice test at the end.


Vector Solutions has a long history of providing industry-specific content for its customers. While this course and its content remain accurate and functional within our systems, the look and feel may not match our more modern offerings.
Course Objectives

The objectives of this course are to help you understand how to apply distribution transformers in both single-phase and three-phase applications. After completing this course, you will:

  • Understand how to apply a single-phase transformer in a single-phase application.
  • Understand how to apply a single-phase transformer in a three-phase application.
  • Understand the application issues for delta-delta, delta-wye, wye-delta, and wye-wye transformer banks.
  • Understand the special considerations when applying open wye- open delta and open delta- open delta banks.
  • Understand when a wye-zig zag or a Scott T transformer bank might be used.
  • Know how to calculate the available fault current at the secondary of a distribution transformer.
SUBJECT MATTER EXPERT: Vector Solutions Commercial
State Licenses
AK - Engineer (General - ,)
AL - Engineer (General - ,)
AR - Engineer (General - ,)
CO - Electrician (General - GB-44-04)
Accreditation: Instructor Name: Lee Layton Instructor Approval ID: INST.0000146-ELEC Provider Approval ID: PROV.0000044-ELEC
DC - Engineer (General - CE21800018)
DE - Engineer (General - ,)
FL - Engineer (General - 272)
Accreditation: This 2-hour interactive course, the third in a transformer series, focuses on the use of single-phase transformers in both single- and three-phase systems. It examines key operational factors such as secondary fault current and the effects of ferroresonance. The course aims to deepen understanding of distribution transformer behavior in practical applications.
GA - Engineer (General - ,)
IA - Engineer (General - ,)
ID - Engineer (General - ,)
IL - Engineer, Professional (General - ,)
IL - Engineer, Structural (General - ,)
KS - Engineer (Health, Safety & Welfare - ,)
KY - Engineer (General - ,)
LA - Contractor, Residential (General)
LA - Engineer (General - ,)
MD - Engineer (General - ,)
ME - Engineer (General - ,)
MI - Engineer (General - ,)
MN - Engineer (General - ,)
MO - Engineer (General - ,)
MS - Engineer (General - ,)
MT - Engineer (General - ,)
NC - Engineer (General - ,)
ND - Engineer (Health, Safety & Welfare - ,)
NE - Engineer (General)
Accreditation: Vector Solutions is authorized by IACET to offer 0.20 CEUs for this program
NH - Engineer (General - ,)
NJ - Engineer (General - 24GP000006300)
NM - Engineer (General - ,)
NV - Engineer (General - ,)
NY - Engineer (General)
Accreditation: Vector Solutions is authorized by IACET to offer 0.2 CEU for this program.
OH - Engineer (General - ,)
OK - Engineer (General - ,)
OR - Engineer (General - ,)
PA - Engineer (General - ,)
PA - Land Surveyor (General)
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TX - Engineer (General - ,)
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VA - Engineer (General - ,)
VT - Engineer (General - ,)
WI - Engineer (General - ,)
WV - Engineer (General - ,)
WY - Engineer (General - ,)
Professional Organizations
American Academy of Environmental Engineers - AAEES - Member (General - ,)
Association of Energy Engineers - AEE - Certification (Technical)
Canada - Alberta Engineer (General - ,)
Canada - British Columbia Engineer (General - ,)
Canada - Manitoba Engineer (General - ,)
Canada - New Brunswick Engineer (General - ,)
Canada - Newfoundland and Labrador Engineer (General - ,)
Canada - Northwest Territories and Nunavut Engineer (General - ,)
Canada - Nova Scotia Engineer (General - ,)
Canada - Ontario Engineer (General - ,)
Canada - Prince Edward Island Engineer (General - ,)
Canada - Quebec Engineer (General - ,)
Canada - Saskatchewan Engineer (General - ,)
Canada - Yukon Engineer (General - ,)
International Association of Electrical Inspectors - IAEI - Certifications (General)
Accreditation: Vector Solutions is authorized by IACET to offer 0.2 CEUs for this program.
National Institute for Certification in Engineering Technologies - NICET (General - ,)
Ontario Association of Certified Engineering Technicians and Technologists - OACETT - Certified Member (Contribution to Technical Knowledge)