15kV, 25kV, and 35kV class service entrances and distribution. Utility coordination, switchgear installation, MV cable terminations, and substation work for facilities that need real power.
Once a facility’s design load exceeds roughly 2,000A at 480V secondary, the economics of medium-voltage service take over. Instead of stepping utility primary down at the property line and distributing low voltage across the site, the building takes MV service and steps down close to the load. The result: smaller conductor sizes, less voltage drop, fewer transformer kVA stranded in distribution.
We deliver MV scope from utility service entrance through unit substation primary. Cold storage refrigeration plants, hyperscale data centers, large industrial facilities, and ground-up commercial projects with significant motor or process load all benefit from MV distribution. We’ve worked across Texas’ utility territories and know how each one handles primary service.
Service entrance design coordination with CenterPoint, Oncor, AEP Texas, ENTRGY Texas, and local cooperatives. Primary metering selection, dual-feed service for redundancy, and utility easement coordination for transformer pads and switching equipment.
Indoor metal-clad and outdoor pad-mount switchgear per ANSI C37.20.2 and C37.20.7. Vacuum circuit breakers, current and voltage transformers, and SEL or Schweitzer relay protection. Main-tie-main, ring-bus, and primary-selective configurations.
Pad-mount, vault-style, and indoor unit substation transformers from 500kVA through 5,000kVA. Liquid-filled (mineral oil, less-flammable, FR3) and dry-type. Primary fuse and secondary main coordination, surge protection, and grounding per IEEE 142.
15kV, 25kV, and 35kV class cable installation in conduit, direct-buried, or cable tray. Terminations and splices per ICEA standards. MV cable testing including very-low-frequency (VLF) hipot and partial discharge testing prior to energization.
Microprocessor relay configuration (SEL-351, SEL-487, SEL-787 and equivalent Schweitzer and ABB platforms). Protection coordination studies, arc-flash analysis per IEEE 1584, and selectivity reviews. Settings file management and commissioning testing.
NETA acceptance testing on switchgear, transformers, and protective devices. Cable testing, ground resistance testing, and protective device commissioning. Coordination with the commissioning agent and utility engineer for energization.
We work across the major Texas utility territories. Each utility has its own service requirements, metering preferences, and project review process — the differences matter on schedule.
Send us the load profile and site plan. We’ll come back with service options and utility coordination realities for your project location.