OLTC Course – e-lesson #4 – Testing on load tap changers

Test techniques applied to transformers with on load tap changers

Join Raka Levi for an insightful live session on the essential testing and maintenance of on-load tap changers (OLTC) in transformers. In this lesson, we will cover various types of tests, including factory, commissioning, routine, and maintenance tests, all critical for ensuring OLTC reliability and preventing transformer failures.

Key Topics Covered:

Importance of OLTC Testing: Learn why testing OLTCs is vital in preventing transformer failures, understanding maintenance intervals, and identifying issues from poor reassembly or maintenance.
Types of Tests: Dive into type tests, routine tests, and special tests, including temperature rise, short circuit, switching, mechanical, and oil contact tests, as well as dynamic resistance and vibration analysis.
Oil Quality Testing: Explore testing methods like electric breakdown, water content, and dissolved gas analysis (DGA) to assess OLTC oil health and performance.
Dynamic Testing: Understand the latest dynamic testing techniques, such as dynamic resistance measurements and vibro-acoustic testing, which detect operational issues during tap transitions.

This session will provide valuable insights into OLTC testing procedures, the standards that guide them, and the impact of effective testing on transformer longevity and reliability.

Don’t miss this opportunity to interact with the instructor, deepen your understanding of OLTC testing, and get your questions answered during the live session. This is an essential session for anyone involved in transformer maintenance and diagnostics.