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Tangent Delta Tester
Performance Feature
1. The instrument adopts Fourier transform digital filtering technology to measure capacitance, dielectric loss and other parameters. The precision of the test results is high, which is convenient for automatic measurement.
2. The instrument adopts frequency conversion technology to eliminate 50Hz power frequency interference in the field, and reliable data can be measured even in the environment of strong electromagnetic interference.
3. Use full-touch super large LCD, easy to operate. Full touch LCD screen, large full graphical operation interface, each process is clear, operators do not need additional professional training to use. The whole process can be measured with a touch.
4. Data storage: it is equipped with calendar chip and large-capacity memory, which can save the test results at any time, check the history record at any time, and print out. The current time and storage time can be displayed and printed at any time.
Its main business is the production, manufacture and sales of electrical equipment and testing instruments.
Performance Feature
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.
Integrated model, with standard capacitor and high-voltage power supply, facilitates field testing and reduces field wiring.
The measurement accuracy of the instrument is high, which can meet the requirements of oil dielectric loss measurement. Therefore, the measurement of oil dielectric loss can be achieved only by equipping standard oil cup and special test line.
It has reverse wiring low-voltage shielding function. When the 220kV CVT bus is grounded, 10kV reverse wiring dielectric loss measurement can be performed on the C11 without removing the wires.
Able to do ac withstand test. It is convenient for PT, CT secondary side ac withstand voltage, 400V low-voltage system to do the withstand voltage test.
It can identify the frequency of external high voltage power supply (40Hz~70Hz), and allow the use of frequency power supply or serial resonant power supply to conduct large-capacity and high-voltage dielectric loss test.
With CVT test function, CVT self-excitation test can be realized, and 4 protection limits of high voltage/current and low voltage/current can be set to ensure the safety of person and equipment.
When testing CVT, not only the capacitance and dielectric loss values of C1 and C2 can be automatically tested, but also the total capacitance and dielectric loss values of CVT equipment can be tested
Equipped with thermal printer for printing and output, with calendar clock.
With a computer interface. A computer can control 32 instruments, which can be integrated into the comprehensive high-voltage test vehicle to achieve measurement, data processing and report output.
Grounding protection function, when the instrument is not grounded or the grounding is bad, the instrument does not enter the normal program, does not output high voltage. Over-current protection, the instrument will not be damaged in short circuit or breakdown.
Electric shock protection function: when the operator of the instrument accidentally touches the electric shock, the instrument will immediately cut off the high voltage to ensure the safety of the test personnel.
MAIOR TECHNICAL INDICATORS | |
Cx accuracy | ±(readings×1%+1pF) |
Tgδ accuracy | ±(readings×1%+0.00040) |
Test current range: | 10μA~5A |
CVT self-excitation method low voltage output | output voltage 3~50V output current 3~30A |
Measurement time | about 40s, related to measurement method |
Input power | 180V ~ 270VAC, 50Hz±1%, municipal or generator power supply |
Computer interface | standard RS232 interface, U disk socket (automatic U disk storage data). |
Its main business is the production, manufacture and sales of electrical equipment and testing instruments.