Substation Field Testing in South Carolina
Southern Switch & Contacts performs substation field testing and electrical maintenance throughout South Carolina for utilities, cooperatives, and industrial customers. South Carolina's electric infrastructure includes Duke Energy Carolinas in the Upstate and Midlands, Dominion Energy South Carolina (formerly SCE&G) in the Central and Lowcountry regions, Santee Cooper serving the coastal and Pee Dee areas, and a statewide network of rural electric cooperatives.
The state has seen significant substation investment tied to manufacturing expansion — BMW, Volvo, Boeing, and other major industrial customers require high-reliability power delivery. Acceptance testing on new substation installations and maintenance programs on existing equipment are both active parts of our South Carolina work.
DGA, Doble power factor, TTR, SFRA, winding resistance, bushing power factor and capacitance, insulation resistance, oil quality, and tap-changer maintenance.
Contact timing, contact resistance, insulation power factor, minimum trip voltage, SF6 gas, and primary injection on medium- and high-voltage circuit breakers.
NETA ATS-compliant commissioning on new substations, transformer replacements, circuit breaker additions, and protection system upgrades.
Periodic maintenance test programs for transformers, breakers, instrument transformers, surge arresters, and protective relays.
VLF withstand and tan delta for medium-voltage cable, TDR fault location, and pre-energization proof testing.
Energized scanning of bus connections, cable terminations, transformer cooling systems, and switchgear for hot spots.
Station battery performance and service tests to IEEE 450 and NERC PRC-005 documentation.
Rapid deployment for transformer failures and substation events throughout South Carolina.
We work with customers across Duke Energy Carolinas, Dominion Energy South Carolina, and Santee Cooper, as well as South Carolina's statewide cooperative network — including Central Electric Power Cooperative (the G&T), Aiken Electric, Berkeley Electric, Horry Electric, Laurens Electric, Mid-Carolina Electric, Newberry Electric, and others. Industrial facilities with dedicated substation infrastructure are a regular part of our South Carolina work.
Coverage areas include Columbia, Charleston, Greenville, Spartanburg, Rock Hill, Florence, Myrtle Beach, Anderson, Aiken, and rural systems throughout the Upstate, Midlands, Pee Dee, and Lowcountry regions.
Tell us what you need tested, your outage window, and site location — we'll put together a scope and mobilization plan.
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