Commissioning Services
Electrical Apparatus Testing
New Installations | Regular Scheduled Maintenance
Substation Projects
Voltage Levels
Keeping Your Electrical Systems Energized
Whether for new equipment or in-service maintenance, we ensure your electrical system will operate as it was designed, minimizing start-up delays, maximizing system availability and potential unexpected and costly downtime. New electrical equipment should always undergo acceptance testing and inspection before being energized, to ensure compliance with appropriate safety standards. Acceptance testing protects your manufacturer’s warranty, provides a benchmark for future tests, and smooths the energization process.
Critical Facilities that Benefit from Expert Testing
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Health Care
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Data Centers
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Laboratories
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Government Facilities
Electrical Testing Services
Acceptance testing of medium- and high-voltage yard and substation equipment for new installations and regular scheduled maintenance. Verify that mission-critical equipment has integrity and the ability to effectively support 100% of the rated load in normal operation and to provide overload and short-circuit protection per design documents.
BESS Electrical Testing Matrix by Device
| Device / System | Primary Electrical Tests |
|---|---|
| Power Transformer (MV/HV) | TTR (Transformer Turns Ratio), IR (Insulation Resistance/Megger), Winding Resistance, Excitation Current, Power Factor/Tan Delta |
| Medium-Voltage (MV) Switchgear | IR, Hi-Pot (High Potential/VLF Insulation), Contact Resistance(Ducter), Protection Relay Function/Trip Testing |
| Power Conversion System (PCS / Inverter) | IR (DC & AC Bus Isolation), Phase Rotation/Sequence, Control Loop Continuity, Ground Fault Detection Verification |
Apparatus Testing Capabilities
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Installation Verification
Inspection and verification of electrical equipment, wiring, grounding, protection, and control systems to confirm readiness for energization.
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Protection System Testing
End-to-end verification of protective relays, controls, alarms, interlocks, communications, and SCADA to ensure complete system functionality and coordination.
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Deficiency Resolution
Rapid identification and resolution of issues across electrical apparatus, protection systems, controls, communications, and field wiring to minimize commissioning delays.
We combine deep field commissioning experience with integrated testing, troubleshooting and turnover capabilities. The result is a single technical partner able to support complex energy-storage and grid-infrastructure projects from installation readiness through energized operation.
Safety First
Utility work demands more than technical competence. It requires disciplined preparation, clear communication, procedural compliance, and respect for hazards present in energized and high-energy environments. NEEC has a comprehensive safety program that includes our employees’ scope of work, industry best practices, OSHA and NFPA regulatory standards.
Experience Modification Rate (EMR): 0.65 (2026), with a three-year improving trend.