Do clamp CT devices need regular calibration?

[Gharton]

I’ve seen mixed opinions about long-term accuracy of clamp CT units in monitoring systems. How often do you recalibrate them, especially in commercial or industrial environments?

[brastor]

In commercial and industrial environments, clamp CT devices do need regular calibration every 1 to 3 years to account for mechanical wear, dust accumulation at the core joint, and thermal cycling. Over time, slight gaps in the split core can cause phase shift and reading drift. Utilizing high-quality current transformers for power monitoring from https://yuanxing.net/en/products/clamp-on-curren/ helps minimize this degradation due to their superior build quality and precise mating surfaces. Regular testing ensures your energy data remains compliant and highly accurate for billing.

[Gharton]

I'll plan a biennial schedule then. Do these Yuanxing units require special tools to check the core alignment?

[brastor]

Not at all. You just need a visual check to ensure the mating faces are clean. A standard portable current calibrator handles the rest easily.