- Course 551.
- 1 Week.
- 3.6 CEU.
This hands-on course is designed for test technicians and other persons involved in setting, testing and diagnosing microprocessor-based relays that protect generators,

generator buses and transformers. NETA and NFPA 70B maintenance and testing standards recommend testing relays either every 2 years or at other regular intervals based on equipment condition and reliability requirements.
The course will be covering:
• Determine relay baud rate and other communications parameters.
• Use manufacturer’s software to communicate with the relay.
•Know what equipment is necessary to communicate with the relay.
• Properly connect relay test equipment to the relay terminals by using connection.
•diagrams and system schematics.
• Know relay protective elements and how they work.
• Know what metering and test functions to perform.
• Read, save and evaluate relay setting.
• Read, save and evaluate event records.
• Perform the following relay element tests and interpret the results.
• Backup Impedance (21).
• Over excitation (24).
• Reverse Power (32).
• Loss of Excitation (40).
• Negative Sequence (46).
• Voltage Controlled Overcurrent (51C).
• Voltage Restrained Overcurrent (51V).
• Under/Overvoltage (27/59).
• Stator Ground (64) – Frequency (81)
• Generator Differential Elements (87)
• Send original settings to relay after testing.
Class participants will perform the following:
• Understand and use manufacturers proprietary setting software.
• Communicate with the relay.
• Upload and download relay settings.
• Read, interpret, and retrieve event reports.
• Read metering data.
• Test individual protective elements for proper operation using protective.
• relay test sets.
• Prove logic inputs and outputs.
Who Should Attend
This hands-on course is designed for test technicians and other persons involved in setting,
testing and diagnosing microprocessor-based relays that protect generators, generator buses and transformers. Participants should have a basic knowledge of AC/DC electrical principles as well as some knowledge of generator operation and generating systems.