ST-1556A Dielectric Loss and Volume Resistivity Tester

Product Introduction:

     The ST-1556A Dielectric Loss and Volume Resistivity Tester complies with GB/T5654-2007 and DL/T421-2009 standards. It adopts a dual-channel, dual-cup design. Cup position 1 is used to measure the dielectric dissipation factor and DC resistivity of liquid insulating media such as insulating oil. The dielectric dissipation factor and resistivity can be automatically completed in one go. Cup position 2 is used to measure the volume resistivity of fire-resistant fluids. The instrument fully automates processes including heating or cooling, temperature control, high-speed data sampling, calculation, display, printing, and storage. It is widely applicable in power, petroleum, chemical, academic, commercial inspection, and research sectors.

Features:

◆ Utilizes medium-frequency induction heating, ensuring uniform heating, fast speed, convenient control, and strict temperature maintenance within preset error limits

◆ Automatically performs heating; capable of simultaneously measuring oil dielectric loss and volume resistivity or selecting either measurement individually

◆ The oil cup features a three-electrode structure compliant with national standard GB/T5654-2007, with an inter-electrode spacing of 2mm, eliminating the impact of stray capacitance and leakage on dielectric loss test results

◆ Equipped with dual detection channels and dual cup positions, operating independently without interference. Cup position 2 includes a cooling function, allowing volume resistivity measurement of fire-resistant fluids according to DL/T421 standards, enabling multiple sample types to be tested on the same instrument

◆ Includes an imported voltage stabilization module, effectively avoiding the impact of mains voltage and frequency fluctuations on dielectric loss measurement accuracy, ensuring the reliability of experimental data

◆ Comprehensive protection functions: automatically cuts off high voltage and issues warnings in cases of cover opening, overvoltage, overcurrent, or high-voltage short circuit

◆ Empty electrode cup calibration function measures the capacitance and dielectric dissipation factor of the empty cup to assess its cleanliness and assembly condition, with data automatically saved

◆ Features a large color touchscreen for simple and quick operation, real-time observation of experimental data, and automatic storage and printing of test results

◆ Calibration certificates from metrology research institutes are available for a fee

Technical Parameters: