PSE provided the engineering and primary protection design for this 10 MVA, 138 kV/13.8 kV substation to provide power to copper mining in Southeast Utah. PSE also designed the 13.8 kV power distribution to the entire SX/EW copper extraction facility. In addition, PSE refined the copper extraction process to meet the client’s operating standards, and upgraded existing, outdated control systems to state-of-the-art Modicon Quantum PLC systems.
Multidiscipline consulting services used:
Process Engineering:
- Redesign of solvent extraction and electrowinning areas
- Comprehensive survey of existing plant equipment
- Design of new crushing areas
Controls Engineering:
- Control building specifications
- PLC installation and programming
Electrical Engineering:
- 138 kV/13.8 kV (10 MVA) substation design
- Grounding grid design
- Tap-in to existing 138kV overland transmission lines
- Metering package interface
- Primary and secondary overhead distribution protection
- 13.8 kV power distribution system design
Structural Engineering:
- Foundations and supports at substation
- Structural design for wood power distribution poles
- Foundation for pre-fabricated control building
Construction Phase:
- Equipment specifications and recommendations
- Evaluation of equipment cost quotes
- Startup and commissioning