Aging and Service Life Considerations
This course discusses the wide variety of materials used to fabricate electrical equipment; limiting factors, such as temperature or water content for various materials; and testing that can be performed to evaluate the condition and remaining life of electrical components. When the condition of various components is evaluated, and limiting conditions are understood and monitored, electrical equipment can be utilized for much longer.
As craftsmen, engineers, supervisors and managers who are responsible for performing, supervising and scheduling maintenance activities, being proactive is vital. Get acquainted with electric equipment aging mechanisms and the aging considerations for components found in substations. Compare periodic testing to periodic replacement and be able to estimate the remaining service life of electrical components.
Who Should Attend
This course is intended for craftsmen, engineers, supervisors and managers who are responsible for performing, supervising and scheduling maintenance activities; determining periodic maintenance needs; or determining end-of-life for substation components.
Benefits and Learning Outcomes
- Identify recognized failure modes and aging indicators.
- Gain insight into periodic and in-service testing.
- Save money by being proactive and avoiding repair/replacement costs.
- Become acquainted with aging mechanisms.
Day 1: Introduction
- Materials Used to Fabricate Electrical Components
- Degradation Mechanisms
– Degradation Mechanisms for All Materials
– Specific Electrical Degradation Mechanisms
- Manufacturing Issues
- Life Cycle Considerations
- Critical Material Properties
- Insulators and Insulation
- Mechanical Protection
- Support Structures
- Indicators of Aging
- Service Life
Day 1: Monitoring, Testing and Observations
- Monthly Inspections
- Data Bases, Historical Data, Trending
- Scheduled Maintenance
- Unscheduled Maintenance
- Electrical Tests
- Other Tests
- Forensic Analysis of Failed Components
Day 2: High Voltage Components
Typical aging mechanisms and leading indicators of degradation are presented for the following high voltage components:
- Insulating Covers
- Circuit Breakers
- CTs (free standing)
- Air Break Switches
- Buses & Bus Duct
- Cable Seals and Cable Terminations
Day 3: Low Voltage Components
Typical aging mechanisms and leading indicators of degradation are presented for the following low voltage components:
- Control Relays
- Protective Relays
- Lockout Relays
- Low Voltage Circuit Breakers
- Fuse Holders
- Battery Chargers
- Uninterruptible Power Supplies