A testing instrument for measuring the dielectric loss tangent and capacitance of various high-voltage power equipment in power plants, substations, and other field or laboratory settings.
The high voltage dielectric loss tester is a precision instrument used in power plants, substations, and other field or laboratory settings to measure the dielectric loss tangent and capacitance of high-voltage power equipment. It supports CVT ratio, voltage angle difference, and dielectric loss testing with an insulating oil cup. It is suitable for testing applications using generator power supply in complete power outage environments. The instrument operates at 220V±10%.
The instrument adopts an integrated structure, incorporating a dielectric loss test bridge, a frequency converter, a step-up transformer, and SF6 standard capacitors. The high voltage source is generated by an inverter and supports 45Hz/55Hz/65Hz frequency conversion output. It uses digital notch filtering technology to suppress power frequency interference and features multiple testing modes, including positive connection method, reverse connection method, and external test voltage method. The measurement range covers dielectric loss tangent values from 0.001% to 99.9% and capacitance values from 30pF to 60000pF. It features an adjustable high-voltage output of 0.5-10kV with a gradual voltage increase function and overcurrent protection. It also includes a built-in Chinese menu display, calendar chip, and large-capacity memory, and supports data export via RS232 interface.
