Service · 03
Plant substations, foundation to energization.
Switchgear and transformer install, grounding grid construction, protective relay wiring, and outage support. Inside the fence, where utility hands over to plant.
01
What's in scope
The work, in detail.
Plant substations are the bridge between utility supply and the process load. They are also the highest-voltage, highest-energy work most contractors will touch. The standard has to match.
Switchgear installation
Pad preparation, switchgear set, bus alignment, control wiring, and pre-energization checks. Coordination with switchgear manufacturer field service.
Transformer installation
Off-load and set, oil filling and processing coordination, primary and secondary terminations, and grounding.
Grounding grid construction
Ground grid layout, exothermic welds, ground rod installation, and ground resistance verification.
Protective relay wiring
CT and PT wiring, trip and close circuits, and SCADA cable to plant control system. Coordinated with the relay engineer.
Acceptance testing support
Coordination with NETA-certified test contractor. Tracking of test results and punch-list close-out.
Outage support
Switching support during planned outages: tag, isolate, ground, restore. Coordinated with plant operations and protection engineering.
02
Deliverables
Turnover documentation.
As-built single-line diagrams.
Ground grid resistance and ground rod test records.
Transformer turn-ratio and insulation resistance reports.
Cable insulation resistance and hi-pot test records.
Protective relay wiring check sheets.
Equipment data plates photographed and logged.
03
Process
How this service runs.
01
Pre-construction
Engineering drawings reviewed against equipment data. Long-lead items tracked.
02
Foundation prep
Anchor bolt layout verification, grounding stub-ups, conduit penetrations.
03
Equipment set
Off-load, set, and align switchgear and transformers per OEM spec.
04
Wiring and testing
Control cable pulled, terminated, and meggered. Coordination with NETA testing.
05
Energization
Pre-energization walk-down. Switching sequence executed with plant operations. Hand-off to relay engineering.
In the field
The work is documented, the loops close, the inspector signs.
100%
self-performed scope
24/7
turnaround support
0
recordables — last job
04
Standards
Standards this scope is built to.
NEC Article 110, 250
Equipment clearances, grounding, and bonding.
NFPA 70E
Arc-flash boundaries and energized work permits. Cat-4 PPE on energized substation work.
IEEE Std 80 and 81
Grounding grid design and ground resistance testing.
NETA ATS
Acceptance testing specifications coordinated with the test contractor.
05
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06
FAQ
Common questions on this scope.
Yes. Plant substations are typically 4.16 kV through 138 kV scope. Our crews are NFPA 70E qualified for the energized portion when required.
Yes. Substation work is mostly outage-driven, and we plan crew sizes and shifts to fit the window.
We coordinate with NETA-certified test contractors and integrate their schedule into ours. We do not pretend to be NETA-certified ourselves.
Yes. Excavation, ground rod and grid conductor placement, exothermic welds, and resistance testing.
Common scope. Old switchgear out, new in, with as much pre-staging as the outage window permits.
Substation scope coming up?
Send the single-line and outage window. We will respond the same business day with next steps.