Automatic Dielectric Loss Tester

Product model: JF5654

Product Introduction

The automatic anti-interference dielectric loss tester is a novel measurement dielectric loss tester. It can measure various insulating materials, insulating sleeves, power cables, capacitors, transformers, capacitive voltages on site under power frequency and high voltage. Dielectric loss tangent (tgδ) and capacitance (Cx) of high voltage equipment such as transformers (CVT) and transformers. Compared with the Xilin capacitor bridge, it has the advantages of simple operation, automatic measurement, intuitive reading, no conversion, high precision, and strong anti-interference ability. There are standard capacitors and voltage boosting devices inside the instrument, which are used in the "internal connection" mode without other external equipment, which is easy to carry.

Technical Parameter

1. Applicable standard: GB/T5654

2. Temperature measurement range: 0～125℃

3. Measurement accuracy: capacitance: ±(1% reading + 0.5pF); relative permittivity: ±1% reading;

Dielectric loss factor: ±(1% reading + 0.0001); DC resistivity: ±10% reading;

4. Measuring range: capacitance: 5pF～200pF; relative permittivity: 1.000～30.000

Dielectric loss factor: 0.00001～100; DC resistivity: 2.5 MΩm～20 TΩm

5. Resolution: capacitance: 0.01pF; relative permittivity: 0.001; dielectric loss factor: 0.00001

6. Temperature control accuracy: ±0.05℃

7. AC test voltage: 500~2000V, continuously adjustable, frequency 50Hz

8. DC test voltage: 0～500V, continuously adjustable

9. Power of the whole machine: 100W

10. Working power supply: AC 220V±10% 50Hz/60Hz±1%

11. Instrument size: 500*360*420mm

12. Net weight: 26KG

Main Feature

1. The oil cup adopts the three-electrode structure in line with the national standard GB/T5654-2007, and the distance between the electrodes is 2mm, which can eliminate the influence of stray capacitance and leakage on the dielectric loss test results.

2. Adopt medium frequency induction heating and PID temperature control algorithm. This heating method has the advantages of non-contact between the oil cup and the heating body, uniform heating, fast speed, and convenient control, so that the temperature is strictly controlled within the preset temperature error range.

3. The internal standard capacitor is SF6 gas-filled three-electrode capacitor. The dielectric loss and capacitance of the capacitor are not affected by ambient temperature and humidity, so that the accuracy of the instrument can still be guaranteed after long-term use.

4. The AC test power supply adopts the AC-DC-AC conversion method, which effectively avoids the influence of the mains voltage and frequency fluctuations on the accuracy of the dielectric loss test. Even if the generator generates electricity, the instrument can run correctly.

5. Perfect protection function. When there is overvoltage, overcurrent, or high voltage short circuit, the instrument can quickly cut off the high voltage and issue a warning message. When the temperature sensor fails or is not connected, a warning message is issued. There is a temperature limit relay in the intermediate frequency induction heating furnace. When the temperature exceeds 120 ℃, the relay is released and the heating stops.

6. The test parameters are easy to set.

7. Adopt large-screen LCD display with backlight and clear display. Friendly man-machine interface, just follow the English menu prompts and input commands, the instrument can automatically test and automatically store and print the test results.

8. With a real-time clock, the test date and time can be saved, displayed and printed with the test results.

9. Empty electrode cup calibration function. Measure the capacitance and dielectric loss factor of the empty electrode cup to judge the cleaning and assembly condition of the empty electrode cup. Calibration data is automatically saved to facilitate calculations of relative permittivity and DC resistivity.