The dielectric loss tester is a high-precision testing instrument used for measuring the tangent of dielectric loss and capacitance of various high-voltage power equipment on-site at power plants and substations or in laboratories. The instrument has an integrated structure, with built-in dielectric loss test bridge, variable frequency voltage regulator power supply, step-up transformer, and SF6 high stability standard capacitor. The high-voltage test source is generated by the inverter inside the instrument and then stepped up by the transformer for use in testing the specimen. The frequencies can be adjusted to 45.0Hz, 50.0Hz, 55.0Hz, 47.5Hz\52.5Hz, 45.0Hz\55.0Hz, 60.0Hz, 65.0Hz, 57.5Hz\62.5Hz, 55.0Hz\65.0Hz. It employs digital notch filter technology to avoid interference from power frequency electric fields during testing, fundamentally solving the problem of accurate measurement under strong electric field interference. It is also suitable for use in scenarios where all power is off and testing is conducted using a generator. This instrument can additionally be paired with an insulating oil cup heating control device to test the dielectric loss of insulating oil.

Large Chinese Display: The instrument is equipped with a 7-inch large touch screen color display, offering a fully touch-operated interface. It is simple to operate, making every process clear and understandable. Operators do not need additional professional training to use it. With just a light tap, the entire measurement process can be completed, making it an ideal intelligent dielectric loss measuring device.

Massive Data Storage: The instrument is internally equipped with a calendar chip and a large-capacity memory, capable of saving up to 100 sets of data. It can store test results in chronological order, allowing for easy access to historical records at any time, and supports printing output.

Advanced Data Management: Instrument data can be exported via USB flash drive and viewed and managed on any PC.

Multiple Testing Modes: The instrument supports various testing methods including positive connection method, reverse connection method, self-excitation method, etc.

Measurement of CVT Without Removing High Voltage Leads: The instrument can accurately measure the dielectric loss and capacitance values of CVT without removing the high voltage leads.

CVT Reverse Connection Shielding Method for Measuring C0: The instrument can use the reverse connection shielding method to measure the dielectric loss and capacitance values of the upper end C0 of CVT.

High-Speed Sampling Signals: The internal inverter and sampling circuits are entirely digitally controlled, with continuously adjustable output voltage.

Multiple Protection for Safety and Reliability: The instrument features multiple protection measures against input voltage fluctuations, high voltage current, output short circuits, power failures, overvoltage, overcurrent, temperature, etc., ensuring the safety and reliability of the instrument. It also has a grounding detection function to ensure that ungrounded equipment cannot start testing operations. In case of accidental connection to a 380V power source on-site, it has an alarm function to protect the instrument from damage.

Supports Bluetooth Data Query: The instrument is equipped with a Bluetooth module supporting Bluetooth data transmission, complying with the "Technical Specifications for Data and Communication of Digital Test Instruments for Electrical Equipment" by the national grid.