Renewable Collector Substation Commissioning Inspection

Commissioning inspection template for a renewable energy collector substation at a solar or wind farm, covering medium- and high-voltage equipment, transformer systems, switchgear, protection, grounding, safety controls, and readiness for energization.

Inspection Details and Energization Readiness

• Inspection scope and substation identifier confirmed
• Commissioning stage documented
• Utility, owner, and contractor representatives present
• One-line diagram, switching order, and approved energization plan available on site

Safety Controls, Access, and LOTO

• Lockout-tagout applied to all required sources and documented
• Absence of exposed energized parts in work area
• Barricades, signage, and controlled access established around electrical hazards
• Required PPE available and appropriate for task hazard level
• Emergency eyewash, first aid kit, and fire extinguisher accessible and unobstructed
• Arc flash and shock hazard labels visible on applicable equipment

Transformer and Auxiliary Systems

• Transformer nameplate matches design voltage, MVA, impedance, and vector group
• Transformer oil level, leaks, and visible contamination acceptable
• Radiators, fans, pumps, and cooling controls installed and functional
• Buchholz, pressure relief, temperature, and level indicators installed and normal
• Neutral grounding and transformer grounding connections complete and secure
• Containment, drainage, and fire protection provisions unobstructed

Switchgear, Breakers, and Buswork

• Switchgear lineup matches approved drawings and equipment schedule
• Breaker racking, interlocks, and position indicators operate correctly
• Disconnect switches and grounding switches operate smoothly and fully
• Buswork, cable terminations, and stress cones are clean, secure, and properly torqued
• Clearances, labeling, and phase identification are correct and legible
• No evidence of damage, corrosion, overheating, or foreign material in switchgear compartments

Protection, Controls, and Metering

• Protection relay settings match approved coordination study and settings file
• Trip, close, and alarm circuits verified functional
• Control power supply, batteries, chargers, and DC distribution normal
• Metering, SCADA, and communications points verified and time-synchronized
• Protection test results reviewed and no unresolved non-conformance items remain

Grounding, Final Housekeeping, and Closeout

• Ground grid, bonds, and equipment grounding conductors installed and labeled where required
• Ground resistance or continuity test results available and acceptable
• Housekeeping complete; no tools, debris, or temporary materials left in energized areas
• Open deficiencies, punch list items, and corrective actions documented with owners and due dates
• Inspector signature completed