Substation and Switching Station Engineering and Design

Power Transformers

• Primary Voltages –24.9 kV to 230 kV
• Secondary Voltages – 2.4 kV to 69 kV
• Capacities – 5 MVA to 50 MVA and larger

Switching Equipment & Major Components

• Power Circuit Breakers – Oil, SF6, Vacuum
• Circuit Switchers
• Reclosers and Sectionalizers
• Metal Clad Switchgear – Indoor, Outdoor
• MOD and Disconnecting Switches
• Voltage Regulators
• Surge Arrestors
• CT's, CCVT's & PT's

Protective Relaying, Control, Metering and Monitoring

• Relay Equipment – Electromechanical, Solid State, Microprocessor
  and Digital
• High Speed Line Relaying – Distance, Pilot, Differential
• Over current Protection – Primary, Backup
• Control Schemes – Automatic Transfer, Remote Control, Transformer Paralleling, Reclosing
• SCADA – Status, Remote Operation, RTU's Monitoring and Metering
• Communication – PLC, Microwave, Fiber Optics, Radio & Telephone Wire

Bus Systems

• Rigid Bus Systems – Aluminum, Copper, Welded, Bolted
• Strain Bus Systems – Aluminum, Copper
• Custom Bus Arrangements
• Low Profile

Grounding Systems

• Grounding Grids – Copper, Galvanized Steel
• Cathodic Protection – Anodes, Test Points
• Overhead Lightning Protection – Static Masts, Overhead Ground Wire

Raceways Systems

• Conduit – RGS, PVC, Concrete Encasement
• Trench – Concrete, Fiberglass
• Cable Tray – Aluminum, Steel, Fiberglass

Structural Buildings

• Control Buildings – Concrete Block, Steel