UNI-T UT255B High Voltage Clamp Ammeter

The UNI-T UT255B is a high-voltage clamp ammeter designed to measure current and leakage in lines up to 69kV. Equipped with an insulation rod, it ensures safe, contactless testing for professional field operations like lightning arrester inspection. The UT255B supports wireless data transmission up to 30m, making it ideal for real-time monitoring in substations, power plants, and maintenance centers. It features a 33mm jaw opening, 0.01mA–600A measurement range, ±(1–2)% accuracy, and a 4-digit LCD with backlight. Additional functions include auto range, peak value, data hold, memory for 99 readings, and auto power-off. It operates on four 1.5V LR03 batteries and weighs just 335g. The clamp’s quick-release function allows efficient operation with a press or pull of the insulation rod.