[caption id="attachment_700" align="alignnone" width="778"]
tan delta tester interface[/caption]Automatic Capacitance and Tan Delta Tester
Application: Tangent delta test for power transformer, instrument transformer, reactor, capacitor, bushing and lightning arrester.
Functions: Capacitance and Tangent Test
CVT self-excitation Measurement
CVT Ratio, polarity, phase difference
Internal high voltage:
Setting Voltage Range: 0.5～12kV
Maximum output current: 200mA
RS232 interface, U disk, and printer
capacitance and tan delta tester
Capacitance and Tangent Test
CVT self-excitation Measurement
CVT Ratio, polarity, phase difference
Setting Voltage Range: 0.5～12kV
Maximum output current: 200mA
Model: DDF-DA/EA/FA
Technical Specification:
| Accuracy: | Cx: | ±(readings×1%+1pF) | |
| tgδ: | ±(readings×1%+0.00040) | ||
| Anti-interference index: | frequency conversion anti-interference, can still achieve the above accuracy under the interference of 200%. | ||
| Capacitance range:
|
Internal high voltage: | 3pF～60000pF/12kV
60pF～1.5μF/0.5kV |
|
| External high voltage: | 3pF～1.5μF/12kV
60pF～30μF/0.5kV |
||
| Resolution: | up to 0.001 pF, 4-bit significant digits | ||
| Tgδ range: | no limit,The resolution is 0.001%. The capacitance, inductance and resistance can be identified automatically. | ||
| Test current range: | 10μA～5A | ||
| Internal high voltage: | Setting Voltage Range: | 0.5～10kV | |
| Maximum output current: | 200mA | ||
| Boost and drop voltage mode: | the voltage is set at will. Such as 5123 v | ||
| Test frequency: | 40-70Hz single frequency can be set at will. For example, 48.7 Hz.
50± 0.1Hz to 50±10Hz automatic dual frequency conversion optional setting. 60± 0.1Hz to 60±10Hz automatic dual frequency conversion optional setting. |
||
| Frequency accuracy: | ±0.01Hz | ||
| External high voltage: | maximum test current 5A, power frequency or frequency conversion of 40-70Hz during positive connection | ||
| Maximum test current 10kV/5A, power frequency or frequency conversion 40-70Hz5 | |||
| CVT self-excitation method low voltage output: | output voltage 3～50V, output current 3～30A | ||
| CVT Ratio Measurement | Ratio test range | 10～99999 | |
| Ratio test accuracy | ±reading×1% | ||
| Phase test range | 0～359.9° | ||
| Phase test accuracy | ±0.1° | ||
| 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). | ||
| Printer: | micro thermal printer | ||
| Environment temperature: | -10℃ ~ 50℃ | ||
| Relative humidity: | <90% | ||
| Overall dimension: | 430×330×350mm | ||
| Weight: | 28kg | ||
Features and Advantages:
1. The instrument uses Fourier transform digital filtering technology to measure capacitance, dielectric loss and other parameters. The test result has high precision and is easy to realize automatic measurement.
2. The instrument adopts frequency conversion technology to eliminate 50Hz power frequency interference in the field. Even in the environment of strong electromagnetic interference, reliable data can be measured.
3. It is easy to operate with full touch LCD. Full touch LCD screen, super full graphics operation interface, each process is very clear, operators can use without additional professional training. The whole process can be measured by touch.
4. Storage data: It is equipped with a calendar chip and a large-capacity memory, which can save the test results at any time, view the historical records at any time, and print out. The current time and storage time can be displayed and printed at any time.
5. Scientific and advanced data management: Instrument data can be exported through U disk, and can be viewed and managed on any PC by special software.
6. The instrument is easy to operate and the measurement process is controlled by microprocessor. As long as the appropriate measurement mode is selected, the measurement of data can be completed automatically under the control of microprocessor.
7. Integrated model, with standard capacitor and high voltage power supply, is convenient for field test and reduces field wiring.
8. The instrument has high accuracy and can meet the requirements of oil dielectric loss measurement. Therefore, only standard oil cup and special testing line are needed to realize oil dielectric loss measurement.
9. It has the function of low voltage shielding for reverse wiring. Under the condition of 220 kV CVT bus grounding, it can measure the dielectric loss of 110 kV reverse wiring without disconnection.
10. Can do AC voltage withstand test. It is convenient for PT and CT to do AC voltage withstanding test twice and 400V low voltage system to do voltage withstanding test.
11. It can identify the frequency of external high-voltage power supply from 40Hz to 70Hz, and allow large capacity and high voltage dielectric loss test with power frequency power supply or series resonant power supply.
12. It has the function of CVT test and can realize the self-excitation test of CVT. It can set four protection restrictions of high voltage/current and low voltage/current to ensure the safety of person and equipment.
13. 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.
14. With a thermal printer, it can print out, with a calendar clock, to facilitate users to produce test reports, with U disk output.
15. With computer interface. A computer can control 32 instruments, which can be integrated into an integrated high-voltage test vehicle to realize measurement, data processing and report output.
16. Grounding protection function. When the instrument is not grounded or grounded badly, the instrument does not enter the normal procedure and does not output high voltage. Overcurrent protection function, the instrument will not be damaged when the sample is short-circuit or breakdown.
17. Electric shock protection function. When the instrument operator accidentally electric shock, the instrument will immediately cut off the high voltage to ensure the safety of the test personnel.
Screen Interface of Tan Delta Tester:
tan delta tester interface
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