Hipot Tester Calibration
ISO 17025 Accredited Hipot Tester Calibration
Protecting the safety and compliance of your electrical testing equipment is paramount for operational success. Constellation PowerLabs provides hipot tester calibrations backed by ISO 17025 accreditation and an established quality program.
As a premier testing and calibration lab, we confirm that your instruments perform strictly to specification, safeguarding your personnel, products, and brand reputation.
- Technical expertise in both AC and DC high-voltage equipment.
- Flexible onsite and in-lab calibration service options to minimize operational downtime.
- Six U.S. laboratories strategically located across North America.
- Supporting high-demand industries like nuclear, life sciences, utilities, manufacturing, and more.
Hipot Tester Calibration Capabilities
Our metrology process verifies every critical function of your safety analyzer. We test to make sure the instrument outputs the exact voltage required while precisely measuring the resulting leakage current.
- AC Voltage Output: We perform a precise AC voltage calibration to verify the tester’s output across its entire range.
- DC Voltage Output: Our technicians conduct DC voltage calibrations to check that your measurements are stable for all dielectric withstand tests.
- Leakage Current Measurement: This is done to verify the accuracy of the microamp or milliamp current meter, which is the most critical component of the test.
- Timer and Safety Functions: We confirm the precision of test cycle timers and the proper operation of safety interlocks.
We design our calibration services to align seamlessly with your operational schedule. Our dedicated onsite teams travel throughout the United States and Canada to perform hipot tester calibrations directly at your facility. Alternatively, our in-house lab equipment calibration services provide a highly controlled environment, providing the most precise measurements for your sensitive instruments.
Our Full Range of High Voltage Services
Constellation PowerLabs offers far more than just hipot tester calibration. We provide a comprehensive suite of high voltage testing services to support your entire infrastructure. We offer 17025 accredited calibrations for a wide array of specialized high-voltage equipment.
- AC/DC High Voltage Verification: Precision calibration for high-voltage testing equipment, verifying AC voltages up to 1000 kV and DC voltages up to 700 kV.
- High Voltage Dividers: Designed for both laboratory and field dividers, essential tools for accurately measuring high voltages.
- Partial Discharge Detectors (PD): Calibrating the sensitivity and accuracy of PD detection equipment. Partial discharge testing services search for early, reliable identification of insulation degradation within critical assets.
- Tan Delta Bridges: Verify the capacitance and dissipation factor measurement tools known as Tan Delta bridges. These tan delta tests are important for assessing the overall health of insulation in transformers and cables.
- Impulse Generators: Our services include the calibration of impulse generators, which are used for lightning and switching impulse testing, confirming the generated waveforms are accurate for simulating transient events.
Why Accurate Hipot Calibration Is Non-Negotiable
Operating an uncalibrated safety tester introduces significant risks to your production line. A false “pass” result can release unsafe products into the market, while a false “fail” leads to expensive scrap, rework, and delays.
Regular hipot tester calibration is the best method to confirm that your dielectric strength assessments are accurate. This process verifies that your electrical component testing data remains valid, reliable, and defensible during audits.
Get Confidence in Your Safety Tests From an Electrical Testing Company
Do not risk a product failure or a safety incident due to inaccurate instrumentation. Constellation PowerLabs is a full-service electrical testing company dedicated to testing your equipment and verifying the health of your assets.
With a growing presence supporting industries in Texas, South Carolina, and North Carolina, we provide reliable predictive maintenance services to keep sites operating safely, compliant, and ready for demanding electrical test requirements.
Ask us about advanced diagnostics for your infrastructure, including hipot testing calibrations, partial discharge and tan delta testing for transformers, cables, and switchgear.
Common Questions About Hipot Tester Calibrations
Review our team’s answers to common technical questions about high-voltage testing procedures, helping you understand the role of accredited calibration services in equipment integrity.
What is the difference between an AC and a DC hipot tester calibration?
The primary difference is the polarity of the voltage applied. The AC hipot test stresses the insulation with alternating polarity, which more closely simulates normal operating conditions but requires higher current due to capacitance. The DC hipot test applies voltage in one polarity, allowing for a clearer reading of leakage current, but the insulation must be properly discharged after testing.
What is the typical leakage current limit for a hipot test?
There is no single universal limit, as the acceptable range depends on the device class and the relevant safety standard being used. Typical limits for leakage current often range between 0.5mA and 100mA. During hipot tester calibrations, we verify that the meter can accurately measure these low-level currents to ensure compliance with your specific limits.
How can I check 5kV with a meter that maxes out at 1kV?
You must never attempt to check 5kV directly with a standard multimeter, as it is dangerous and will damage the meter. Instead, you need a specialized accessory, such as a high-voltage probe or a calibrated high-voltage divider. This device safely steps down the 5kV signal to a level (e.g., 0.5kV) that your meter can accurately and safely read.
What causes data delays when I get data from a hipot device?
Data delays often stem from communication limitations, internal processing speed, or software configuration. Factors can include the communication baud rate, processing time within the tester’s internal controller, or software buffering on the receiving PC. Verifying your hipot tester calibration includes a check of interface functions can help rule out hardware faults.