I. Performance Characteristics
1. The instrument adopts Fourier transform digital filtering technology to measure capacitance, dielectric loss and other parameters. The test results have high accuracy and are easy to achieve automated measurement.
2. The instrument adopts frequency conversion technology to eliminate 50Hz power frequency interference on site, and reliable data can be measured even in the environment of strong electromagnetic interference.
3. Use a full-touch large LCD display, easy to operate. Full touch LCD screen, super large full graphics operation interface, each process is very clear, operators do not need additional professional training to use. The whole process can be measured with a little touch。
4. Storage data: internally equipped with a calendar chip and large-capacity memory, which can save the detection results at any time, can view the history record at any time, and can print and output. Current times and storage times can be displayed and printed at any time.
5. Scientific and advanced data management: the instrument data can be exported through the U disk, and the data can be viewed and managed on any PC machine through special software.
6. The instrument is easy to operate, and the measurement process is controlled by the microprocessor. As long as the appropriate measurement method is selected, the data measurement can be completed automatically under the control of the microprocessor
7. Integrated model, equipped with standard capacitance and high-voltage power supply, to facilitate field testing and reduce field wiring
8. The instrument measurement accuracy is high and can meet the requirements of oil intermediate loss measurement, so only the oil intermediate loss measurement can be realized with standard oil cup and special test line.
9. Has the low-voltage shielding function of reverse wiring.
10. Be able to do AC pressure resistance test. Convenient for PT, CT secondary AC voltage test, 400V low voltage system to do voltage test.
11. Can identify the frequency of external high voltage power supply of 40Hz~70Hz, and allow the use of power frequency power supply or serial resonance power supply for large capacity and high voltage resonant loss test.
12、With a thermal printer can print output, with a calendar clock, convenient for users to test report, with U disk output.
13、With a computer interface. One computer can control 32 instruments, which can be integrated into the integrated high-voltage test vehicle, realizing measurement, data processing and report output.
14、Ground protection function. When the instrument is not grounded wire or bad grounding, the instrument does not enter the normal procedure and does not output high voltage. Overcurrent protection function, the instrument is not damaged during the test product short circuit or breakdown.
15、Electric shock protection function, when the instrument operator accidentally electric shock, the instrument will immediately cut off the high pressure, to ensure the safety of the test personnel.
II. Technical Indicators
Accuracy： Cx: ±（reading×1%+1pF）
tgδ: ±（reading×1%+0.00040）
Anti-interference index： Frequency conversion is anti-interference, with 200% interference
Electrical capacity range： Apply high pressure inside： 60pF～10μF/0.5kV
Extra high pressure：3pF～1.5μF/10kV 60pF～30μF/0.5kV
Resolution: up to 0.001pF, 4 valid digitstgδ
Scope: unlimited, resolution 0.001%, capacitor, inductor, resistance of the three test products automatic identification.
Test current range：5μA～5A
Internal high voltage: set the voltage range：200V～500V
Maximum output current: 1,500 m A
Lift mode: the voltage is set at will. Like 452V。
Test frequency: 40-70Hz single frequency is set at will. Like the 48.7Hz.50±0.1Hz—50±10Hz
Automatic double frequency conversion is set at will.60±0.1Hz—60±10Hz
Automatic double frequency conversion is set at will.
Frequency accuracy: ± 0.01Hz
External high voltage: the maximum test current 5A is 5 A, power frequency or frequency conversion 40-70Hz
The maximum test current during reverse wiring is 10kV / 5A, and the power frequency or frequency conversion is 40-70Hz
Input power supply: 180V~270VAC, 50Hz ± 1%, mains power or generator power supply
Computer interface: standard RS232 interface, U disk socket (automatic U disk storage data).
Printer: Micro thermal printer ambient temperature: -10℃ ~50℃ relative humidity: <90%