一、绝缘油介质损耗及电阻率测试仪产品介绍:
A, product introduction:
HCJD- Ⅱ type insulating oil dielectric loss and electrical resistivity tester based GB/T5654-2007 "liquid insulating material relative permittivity, dielectric loss factor and DC resistivity measurements," design and manufacture. For the measurement of dielectric loss factor and the DC resistivity oil liquid and insulating medium. Integ. Integrated structure. The internal integration of the dielectric loss oil cup, Wen Kongyi, a temperature sensor, dielectric loss measuring bridge, AC test power supply, standard capacitor, high resistance meter, DC high voltage source and other major components. The instrument adopts full digital technology, all of the intelligent automatic measurement, equipped with large screen liquid crystal display (240 x 128), a full Chinese menu, each step has Chinese tips, the test results can be automatically stored and printed output, the operator does not need specialized training can skilled use.
Two, the main functions and features
(1) the cup with three electrode structure of GB GB/T5654-2007, interelectrode spacing 2mm, can eliminate stray capacitance and leakage effects on dielectric loss test results. With oil drainage solenoid switch, can not remove the oil cup case emptying cup sample oil, and the available sample oil flushing oil cup.
(2) the instrument by medium frequency induction heating, PID temperature control algorithm. This heating method has the advantages of the oil cup and the heating body non-contact, even heating, fast speed, convenient control, strict control of the temperature in the temperature error within the preset range.
(3) the internal standard capacitors charging three electrode capacitance is SF6, dielectric loss and capacitance of the capacitor is not affected by environmental temperature, humidity, make the instrument accuracy is ensured still after use in a long time.
(4) AC test power supply using AC-DC-AC conversion mode, effectively avoid the influence of voltage and frequency fluctuation on the accuracy of dielectric loss test, even if the generator, the instrument can also run properly.
(5) perfect protection function. When the over-voltage, over-current, high voltage short circuit, the instrument can quickly cut off the high voltage, and a warning message. When the temperature sensor failure or not connected, a warning message.
The temperature limiting relay is arranged in the medium frequency induction heating furnace, when the temperature exceeds 120 degrees, the release of the relay, the heating is stopped.
(6) the parameter setting is convenient. The temperature range 0 ~ 125 ℃, AC voltage setting range
500 ~ 2200V, 0 ~ 500V DC voltage settings.
(7) the use of large screen LCD display with backlight, display clear. Friendly interface, simply prompt, enter the command in accordance with the Chinese characters menu, instrument can be used to test automatically, and automatic storage and print the test results.
(8) with a real-time clock, date of test, time can be saved with test results, display, print.
(9) the air electrode cup calibration function. Measurement of air electrode cup capacitance and dielectric loss factor, in order to determine air electrode cup cleaning and assembly condition. The calibration data is automatically saved, in order to facilitate the calculation of relative permittivity and DC resistivity.
Three, the main technical indexes
1, the power supply voltage: AC 220V ± 10%
2, the power supply frequency: 50Hz/60Hz ± 1%
3, measurement range: 5pF ~ 200pF capacitance
Relative permittivity of 1 ~ 30
Dielectric loss factor of 0.00001 ~ 100
4, DC resistivity 2.5 M ~ 20 T Ω m Ω
5, the measurement accuracy: capacitance ± (1%. +0.5pF)
Relative permittivity of ± 1% readings
Dielectric loss factor (+0.0001 ± 1% readings)
DC resistivity ± 10% readings
6, the capacitance resolution: 0.01pF
Relative permittivity of 0.001
Dielectric loss factor of 0.00001
7, the temperature range: 0 ~ 125 ℃
8, the temperature measurement error: ± 0.5 ℃
9 experiments, AC voltage: 500 ~ 2200V continuously adjustable, frequency 50Hz
10, DC test voltage: 0 ~ 500V continuously adjustable
11, power: 100W
12, size: 500 x 360 x 420
13, the total weight: 22Kg
Four, the use of conditions
Environment temperature: 0 ℃ ~ 40 ℃
Relative humidity: 75% <
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