■ Functional features
▲ The instrument adopts medium frequency induction heating and PID temperature control algorithm. The heating method has the advantages of non-contact between oil cup and heating body, uniform heating, fast speed and convenient control, so that the temperature is strictly controlled within the preset temperature error range.
▲ Internal standard capacitor for SF6 inflatable three-point pole capacitor, the capacitance of dielectric loss and capacitance is not affected by environmental temperature, humidity, so that the instrument accuracy is still guaranteed after a long time of use.
▲ AC test power supply using AC-DC-AC conversion mode, effectively avoid mains voltage and frequency fluctuations on dielectric loss test accuracy, even if the generator power, the instrument can run correctly.
▲ Perfect protection function. When there is overvoltage, overcurrent, high voltage short circuit, the instrument can quickly cut off the high voltage, and give a warning message. When the temperature sensor fails or is not connected, a warning message is generated.
▲ In the intermediate frequency induction heating furnace with a finite temperature relay, when the temperature exceeds 120 degrees, the relay release, heating stop.
▲ Empty electrode cup calibration function. The electric capacity and dielectric loss factor of the empty electrode cup were measured to judge the cleaning and assembly status of the empty electrode cup. Calibration data are saved automatically to facilitate accurate calculation of relative permittivity and DC resistivity.
▲ Optional automatic oil discharge type dielectric loss.
■ Technical parameters
▲ Power supply voltage: AC 220V±10%
▲ Power frequency: 50Hz/60Hz ±1%
▲ Measurement range:
Capacitance 5pF to 200pF
Relative permittivity 1.000 ~ 30.000
Medium loss factor 0.00001 ~ 100
▲ Dc resistivity: 2.5 MΩm ～ 20 TΩm
▲Measurement accuracy:
Capacitance ±(1% reading +0.5pF)
Relative permittivity ±1% reading
Medium loss factor ±(1% reading +0.0001)
Dc resistivity ±10% reading
▲ Resolution:
0.01 pF capacitance
Relative permittivity 0.001
Medium loss factor 0.00001
▲ Temperature range: 0 ~ 120℃
▲ Temperature measurement error: ±0.5℃
▲ AC experimental voltage: 200 ~ 2200V continuously adjustable, frequency 50Hz
▲ DC test voltage: 0 ~ 500V continuous adjustable
▲ Power consumption: 100W
▲ Size: 460mm× 370mm×330mm
