Schweitzer SEL-321 Commissioning Course Outline
Getting started:
• Relay introduction
• Hardware and architecture
• Front panel control and display
• External AC / DC connections
• Putting the relay into service
Communication / programming
• Access, Commands & setting structure
• Manual setting change, Reviewing and copying settings
• Password, time & date, communication ports
• SEL logic control equations and timers
• Target buttons, front panel, event reporting
Commissioning:
Installation
Metering, inputs and outputs, fault locator
Phase mho, Ground mho elements
Ground quadrilateral element
Overcurrent suspervision
Negative sequence elements
Residual elements
Timing elements
Switch on to fault and stub line logic
Voltage elements; loss of potential and overvoltage
Permissive keying
Out of step
Load encroachment
Outcome:
By the end of this course the participants will have the basic knowledge to perform commissioning and acceptance testing of the impedance based transmission line protective relays.
