PROTECTIVE RELAY MAINTENANCE, BASIC

4.5 days
3.6 CEUs
Hands-on
8:00am - 4:30pm, the final day ends at 12:00pm

Tuition USD $1725

Electromechanical protective relays are not a new concept. They've been in use for many years. They have earned a well-deserved reputation for accuracy, dependability, and reliability. There are two basic types of operating mechanisms: the electromagnetic-attraction relay and electromagnetic-induction relay. Proper testing and maintenance of basic protective relays ensures the integrity of the protection system periodically after installation. Calibration testing is required to verify relay setting calibrations, configurations, and to identify any protection system defects. Functional testing is required to verify that the intent of the protection system is being carried out.

Learning Objectives
• Basic electromagnetic induction protective relay theory, application and components

• Interpret internal and external wiring diagrams and timing curves for typical relays

• Understand CT and PT connections and polarity

• Perform visual and mechanical inspections

• Use of MPRT with TVI

• Test, calibrate, repair and troubleshoot the following relays in lab:
Overcurrent (CO, IAC)
Over/undervoltage (CV, IAV)
Buss differential (PVD)
Transformer percentage differential with harmonic restraint (BDD, HU)

Who Should Attend
Designed for technicians, engineers, and supervisors that are responsible for the application, maintenance and testing of protective relays at utility and industrial facilities.

Requirements
Requires working knowledge of basic AC electricity. Bring a scientific calculator.

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