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.