This course focuses on developing a comprehensive understanding of line protection schemes, including their structure, core concepts, and operating functions.
Protection Schemes
OHTL & Underground Feeder Protection Drawing
Course Modules
Course topics cover:
OHTL and UGC protection theory.
Protection logic diagram.
Current and voltage transformer loops to protection relays.
CT shorting and isolating facility.
Difference between a trip relay and a lockout relay.
Interface with the circuit breaker trip coil.
Trip circuit supervision circuit.
Input and output signals to protection relays.
Reading, understanding, and analyzing alarms from protection relays.
Maintenance and troubleshooting of line protection schemes.
