What is a proving unit and why is it important?
A proving unit is a portable device used to verify that a voltage detector is functioning correctly before and after use. These devices provide a known voltage source, allowing electricians and technicians to confirm their voltage indicators are operating accurately. Proving units play a vital role in safe isolation procedures, reducing the risk of accidental electric shock in high-voltage environments.
Why do proving units need calibration?
Regular calibration ensures proving units are delivering the correct voltage output to verify voltage testers. Over time, battery degradation, component wear, and environmental exposure can cause fluctuations in the voltage source, leading to inaccurate verification results. Calibration ensures proving units remain reliable and compliant with electrical safety standards.
Does Calibrationhouse offer on-site calibration for proving units?
Yes, onsite calibration is available across the UK, allowing businesses to maintain testing schedules without sending equipment away. Our field engineers can visit customer sites to calibrate proving units and voltage detectors as part of a comprehensive electrical test equipment calibration service.
For customers in the United States, proving unit calibration is available at our Tampa facility, ensuring compliance with BSI ISO9001-certified standards.
What expertise does Calibrationhouse have in proving unit calibration?
Calibrationhouse has over 40 years of expertise in electrical safety calibration, working with all major manufacturers, including Seaward’s PH3 and PH3-LLT proving units. Our engineers use high-accuracy test equipment to ensure proving units consistently produce the required test voltage for safe isolation procedures.
How often should a proving unit be calibrated?
Calibrationhouse recommends annual calibration for proving units to ensure continued accuracy and safe electrical testing practices. To assist customers, we provide automatic reminders for yearly calibration services.
Does Calibrationhouse provide UKAS and BSI ISO9001-accredited calibration for proving units?
Yes, Calibrationhouse offers UKAS-accredited calibration for proving units, ensuring traceability to national and international standards. Additionally, our Tampa facility in the United States operates under BSI ISO9001 certification, guaranteeing high-quality calibration services that meet industry compliance requirements.
