High/Medium Voltage Testing

We test, prove, and document the health of your power system—so you can operate safely and stay online. Our NETA-informed procedures and calibrated instruments keep your gear within spec and your compliance boxes checked.

What We Test

• Transformers: insulation resistance, polarization index, TTR, winding resistance, power factor/DDF, bushing tests, CT polarity/burden.
• Medium/Low-Voltage Switchgear & MCCs: insulation & contact resistance, primary/secondary injection, functional & interlock checks.
• Circuit Breakers (LV/MV): primary injection, trip testing, contact resistance, timing.
• Protective Relays & CT/VT Circuits: secondary injection, logic/protection verification.
• Power Cables & Busway: VLF/hipot, insulation resistance, sheath integrity, phasing/continuity, partial discharge (as scoped).
• Grounding & Bonding: ground-grid/rod resistance, continuity, exothermic/mechanical bond verification.
• Thermography (IR): hot-spot detection on energized equipment per NFPA 70B best practices.

How We Work

• Standards-Aligned: NEC, NFPA 70B, NFPA 70E, IEEE/NEMA guidance and NETA ATS/MTS procedures.
• Clear Reports: Numeric results, pass/fail, trend notes, and corrective recommendations.
• Planned Outages: We stage testing around your operations, with lockout/tagout and detailed switching plans.
• Nationwide, SDVOSB: Veteran-owned; mobilization plans for plants, utilities, federal sites, and campuses.

Ready to schedule testing or need pricing? Call 919-694-1485 or request a quote.

Related services: Switchgear Testing and Protective Relay Testing & Commissioning.