Insulating Oil Dielectric Loss and Resistivity Tester

详情

 Key Features:



1. The test cell used three-electrode-type structure in accordance with the national standard of GB/T********7, with electrode gap 2mm, can eliminate the effect of stray capacitance and reducing leakage on the dielectric loss test results.



2. Instruments used medium frequency induction heating, PID temperature control algorithm. The heating method can make the test cell and heated without contact, and uniform heating, fast, convenient control, and make the temperature strictly controlled within the preset temperature range.



3. Internal capacitor is SF6 gas-filled three-electrode capacitance, its dielectric loss and capacitance is not affected by the ambient temperature and humidity. It can make the instrument accuracy be guaranteed after prolonged use.



4. AC test power supply using AC-DC-AC conversion, effectively avoid the fluctuations in mains voltage and frequency on dielectric loss measurement accuracy effect. Even a generator, the instrument can work properly.



5. Perfect protection function; When there is over voltage,over current or high-voltage short circuit, instruments can quickly cut off pressure, and issues a warning message. When the temperature of the sensor failure or not connected, the instrument will also issue a warning message.

There is a temperature limiting relay in the medium frequency induction heating furnace. When temperature above **0 degrees, the instrument frees the relay and stops heating.



6. More convenient the experimental parameter is set. Temperature setting range 0~**5ºC, AC voltage setting range **0~***0V, DC voltage setting range 0~**0V



7. Large LCD display with backlight and clear display, Friendly human-machine interface, simply follow the characters menu prompt, enter the command, the instrument can be automatically tested, and automatically store and print test results.



8. The instrument comes with real time clock, the test date and time can be saved,displayed and printed with the test results.



9. Test cell calibration. We can judge the test cell's cleaning and assembly by measuring electrode capacitance and dielectric loss factor of the test cell. The calibration data is automatically stored, in order to accurately calculate the relative permittivity and the DC resistivity.

 

Specifications:

 

Voltage supply: AC**0V±*0%

Power frequency:*0Hz/*0Hz ±1%

Measuring range:

Electric capacity 5pF~**0Pf

Relative permittivity 1.**0~*0.**0

Dielectric loss factor 0.****1~**0

Resistivity     2.5 MΩm~*0 TΩm

Measuring accuracy:

Electric capacity        ± (1% of measuring value*0.5pF)

Relative permittivity        ±1% of measuring value

Dielectric dissipation factor    ± (1% of measuring value*0.***1)

Resistivity                 ±*0% of measuring value

Resolution:

Electric capacity        0.*1pF

Relative permittivity        0.**1

Dielectric dissipation factor    0.****1

Test temperature:0~**5ºC

Error of measurement:±0.5ºC

Test Voltage AC(RMS):**0~***0V   Continuously adjustable, frequency *0HZ

Test Voltage DC:0~**0V      Continuously adjustable

Power:**0W

Overall dimension:**0×**0×**0

Total weight:*2Kg