The GF211D is a lightweight handheld dual-clamp phase tester, professionally developed for on-site electrical inspection and maintenance tasks. It delivers precise measurement of AC voltage (0–600V), AC current (0–20A), phase angle (0–360.0°), frequency, active and reactive power, as well as power factor. Fitted with two external clamp sensors, the device enables non-invasive current testing without wire disconnection, greatly simplifying field operation.
This smart electrical measuring instrument supports multiple practical detection functions, including discrimination between inductive and capacitive circuits, three-phase sequence verification, transformer connection inspection, phase relation analysis for differential protection, and wiring correctness validation. Adopting a high-definition 3.5-inch color LCD screen, it boasts 0.5% high measurement accuracy and an IEC-compliant isolated safety structure. Weighing merely 0.45kg and built with portability in mind, it can store up to 500 groups of measurement data. Suited for rigorous industrial scenarios, this tester is extensively applied in substations, power plants, manufacturing factories, mines and petrochemical industries to conduct efficient, secure and dependable on-site electrical testing.
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