Regular insulating oil testing is essential for transformer predictive maintenance. Tan delta (dielectric loss factor) and volume resistivity are two core indicators to identify oil aging, moisture ingress and contamination, helping power engineers avoid unexpected transformer outages.
The FT‑YJS‑059A insulating oil tan‑delta tester complies with ASTM D924 and GB/T5654‑2007 standards, enabling simultaneous measurement of dielectric loss and DC resistivity in one automatic workflow. It adopts a standard three‑electrode oil cup structure to eliminate stray capacitance interference. Equipped with medium‑frequency induction heating and PID temperature control, it delivers stable, repeatable test data supported by DSP and FFT technology.
This portable unit features a large English‑language touch screen, automatic oil draining & cleaning, empty‑cup calibration, and storage for up to 100 groups of test records. Built‑in safety alarms protect operators during high‑voltage operations. With high measuring accuracy and simple operation, it suits field and lab‑site oil quality inspection, cutting manual work and improving testing efficiency for power utilities.
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