ISO 17025 Accredited AC Voltage Calibrations Lab | Get Quote
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High-Precision ISO 17025 Certified AC Voltage Calibrations

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A Leading AC Voltage Calibrations Lab in the USA

Accurate AC voltage calibration is necessary for verifying the integrity of high-voltage equipment’s safety, stability, and compliance. Precise high voltage calibration helps prevent measurement errors that could lead to system failures, safety hazards, or regulatory non-compliance.

At Constellation PowerLabs, our ISO 17025-accredited testing and calibration lab delivers professional calibration services, verifying the accuracy of required high-voltage systems. With state-of-the-art facilities and over 100+ years of experience, we provide customized services to meet the stringent demands of various industries, providing safety and compliance.

  • ISO 17025 and NIST-Traceable Certifications: Delivering accurate, accredited calibrations you can trust.
  • State-of-the-Art High Voltage Labs: Strategically located in the Northeast, with easy accessibility for businesses in the US and Canada.
  • Onsite High Voltage Calibrations:  Reducing downtime with onsite services delivered wherever you need us.
  • Dedicated HV Logistics Coordinator: Streamlining scheduling and equipment handling.
  • OneLab Customer Portal: Access certificates online, track progress, and set calibration reminders.
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Our Diverse High Voltage Calibration Services

At Constellation PowerLabs, we offer a full suite of high-voltage testing and calibration services, beyond AC voltage calibrations. Our ISO 17025-accredited labs provide precision, compliance, and stability for industries that demand the highest standards. Whether it’s DC voltage testing, impulse voltage validation, or partial discharge calibrations, we assure accuracy and safety for your critical equipment.

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Our High Voltage Calibration Offerings Include

DC Voltage Testing

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Precise calibration for high-voltage DC systems to provide accuracy and compliance.
• Up to 700 kV
• ISO 17025 accredited for DC up to 450 kV

High Current 60 Hz and DC Testing

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Verification of high-current systems for safe and reliable operation.

High Current Testing:
• Up to 17,500 amps traceable to NIST standards
• ISO 17025 accredited up to 5,000 amps

Direct Measurement:
• Direct measurement up to 17,500 amps traceable to NIST
• DC current testing up to 10,000 amps

Impulse Voltage Testing

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Ensuring insulation integrity with high-voltage transient testing.

Only laboratory accredited in the Americas & ISO 17025 accredited for the following:

• Lightning Impulse (LI) testing up to 2.5 MV
• Switching Impulse (SI) testing up to 2.5 MV
• Chopped Impulse (LIC) testing up to 2.5 MV
• Chopped Impulse (LIC) testing up to 2.5 MV

Tan Delta / High Voltage Capacitance Testing

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Assessing insulation health for transformers, cables, and rotating machines.

• Tan Delta Bridge measurements
• HV Capacitor testing up to 200 kV
• Tan Delta measurement for dissipation factors (DF) as low as 0.0000025
• Testing at 50/60 Hz

Motor and Generator Test Systems

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Calibration and testing of motor and generator performance under real-world conditions.

• 60 Hz motor/generator systems
• Variable Frequency Drive (VFD) Systems

Partial Discharge Calibrator Certification

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Accurate PD calibrations to detect early-stage equipment failures.

Only laboratory accredited in the Americas for this parameter:

• ISO 17025 is accredited for partial discharge testing up to 10,000 pC
• Specialized testing for high-voltage systems across industries

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With our state-of-the-art laboratories and highly trained technicians, Constellation PowerLabs provides trusted calibration services to meet the unique needs of high-voltage applications.

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Minimize Downtime with Our Onsite High Voltage Calibration Services

Some high-voltage equipment isn’t easily transportable, so we offer on-site calibration services. Our on-site high-voltage calibrations minimize downtime while ensuring compliance. With full logistics support, we handle scheduling and execution across North and South America. Adhering to ISO 17025, IEEE 4, IEC 60060-2, IEC 60270, ANSI Z540, and 10 CFR 50 / Appendix B, we deliver precise, industry-compliant high-voltage calibrations.

Bringing our high-voltage lab directly to your facility provides a new level of convenience. Our experts conduct onsite HV calibrations, eliminating the need to ship your HV equipment while helping you maintain smooth operations.

View our simple four-step process for onsite high-voltage calibrations across the U.S. and Canada:

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Manage Your AC Voltage Equipment with the OneLab Online Portal

At Constellation PowerLabs, transparency drives trust and strengthens partnerships. That’s why we provide access to OneLab, our advanced online customer portal that makes managing your AC voltage calibrations seamless and efficient. With real-time updates, detailed insights, and full project visibility, you stay in control at every stage. Whether scheduling an AC voltage calibration or tracking upcoming routine calibrations, OneLab keeps you informed.

As a secure, centralized platform, OneLab offers easy access to vital project details, helping you manage equipment with ease.

With OneLab, you can:

Track Ongoing Progress

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Monitor project updates in real-time from anywhere

Monitor Equipment Shipments

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Stay informed on transit status with full transparency.

Access Calibration Certificates and Reports Online

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Download test results instantly for compliance and audits.

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Experience streamlined high-voltage calibration management with OneLab, your go-to portal for efficiency and control.

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Partner with a High-Voltage Lab Backed by Proven Expertise

Constellation PowerLabs is a trusted leader in high-voltage calibration, delivering precision and dependability in every service. We specialize in AC voltage calibrations, providing compliance and accuracy for high-voltage systems across the U.S. and Canada. Whether onsite or in-lab, our ISO 17025-accredited calibrations help minimize downtime and enhance operational efficiency.

From circuit breaker testing to tan delta bridge calibration, we provide customized solutions to meet your high-voltage needs. 

Request a quote today and experience expert AC voltage calibration with Constellation PowerLabs!

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