Scope:

• Install new Human Interface Rack (HMI).
• Remove existing obsolete HMI/PLC cabinet.
• Replace three (3) existing compact Programmable Logic Controllers (PLCs) with new Quantum PLCs.
• Upgrade existing SAS elementary diagrams and rack wiring per latest SAS standards.
• Install LSR Auto/Solid switch for the existing 66kV HCB relays.
• Replace PLC annunciator alarm splitting diodes with auxiliary relays.
• Prepare the necessary programming for the substation’s automatic response to pre-defined conditions.
• Using a software simulator, verify the proper operation of this program.
• Replace 66kV Bus Tie GCX and JBCG relays with SEL-311C relays.