Tangent Delta Transformer Dielectric Loss Dissipation Instrument Measurement
Features
1. The instrument adopts Fourier transform digital filtering technology to measure capacitance, dielectric loss and other parameters.The test result has high precision and is convenient to realize automatic measurement.
2. The instrument adopts frequency conversion technology to eliminate 50Hz power frequency interference on site, so that reliable data can be measured even under the environment of strong electromagnetic interference.
3. Data storage: equipped with calendar chip and large-capacity memory internally, it can save test results at any time, view historical records at any time and print out.The current time and storage time can be displayed and printed at any time.
4, scientific and advanced data management: instrument data can be exported through the U disk, can be in any PC through special software, view and manage data.
5. 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.
6. Integrated model, with standard capacitor and high voltage power supply, convenient for field test and reduce field wiring.
7, the instrument measurement accuracy is high, can meet the oil dielectric loss measurement requirements, so only equipped with standard oil cup, and special test line can achieve oil dielectric loss measurement.
8. It has reverse wiring low-voltage shielding function. In the case of 220kV CVT bus grounding, it can measure the dielectric loss of 10kV reverse wiring of C11 without removing wires
9. Able to do ac pressure test.It is convenient for PT and CT to do ac pressure withstand test twice and 400V low voltage system to do pressure withstand test.
10. It can identify the frequency of external high-voltage power supply from 40Hz to 70Hz, and it is allowed to use power-frequency power supply or serially connected resonant power supply for high-capacity high-voltage dielectric loss test.
11, with CVT test function, can achieve CVT self-excitation test, can set high voltage/current, low voltage/current four protection limits, to ensure personal and equipment safety.
12. When testing CVT, the capacitance and dielectric loss of C1 and C2 can be automatically tested, and the total capacitance and dielectric loss of CVT equipment can be tested.
13.Equipped with insulation resistance testing function, avoid repeated wiring, improve testing efficiency.
14, the thermal printer can print output, with calendar clock, convenient for users to test report, with U disk output.
15, With computer interface.A computer can control 32 instruments, can be integrated into the integrated high voltage test vehicle, to achieve measurement, data processing and report output.
16. Grounding protection function: when the instrument is ungrounded or not well grounded, the instrument will not enter the normal procedure and will not output high voltage.Overcurrent protection prevents the instrument from being damaged in case of 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.
Technical specification
| Accuracy |
Cx |
±(reading×1%+1pF) |
| tgδ |
±(reading×1%+0.00040) |
| Anti-interference index |
Frequency conversion anti-interference, in 200% interference can still achieve the above accuracy |
| Capacitance range |
internal high voltage |
3pF~60000pF/10kV 60pF~1μF/0.5kV |
| external high voltage |
3pF~1.5μF/10kV 60pF~30μF/0.5kV |
| resolution |
maximum to 0.001pF, 4 significant digits |
| tgδ range |
No limitation, resolution 0.001%, capacitance, inductance, resistance can be automatically identified |
| Test current range |
10μA~5A |
| Internal high voltage |
voltage setting range |
0.5~10kV |
| maximum output voltage |
200mA |
| voltage lifting mode |
voltage setting arbitrarialy |
| test frequency |
single frequency set at will( 40-70hz).
Automatic dual variable frequency set at will (from 50±0.1Hz to 50±10Hz)
Automatic dual variable frequency set at will (from 60±0.1Hz to 60±10Hz) |
| frequency resolution |
±0.01Hz |
| External high voltage |
Maximum test current 5A, power frequency or variable frequency 40-70hz, during positive connection |
| Maximum test current 10kV/5A, power frequency or variable frequency 40-70hz, during reverse connection |
CVT self-exciting
low voltage output |
Output voltage 3-50V, output current 3-30A |
| Measuring duration |
About 40s, depending on measuring method |
| Input power |
180V ~ 270VAC, 50Hz ± 1% |
| Computer interface |
Standard RS232 interface |
| Pinter |
mini-type thermal printer |
| Ambient temperature |
-10ºC~50ºC |
| Relative humidity |
<90% |
| Dimensions |
460×360×350mm |
| Weight |
28kg |
FAQ:
1. How can I choose the suitable one?
Please tell us your detailed requirements by mail or online, we will recommend the suitable one as your request.
2. Does your price is competitive?
We have our own factory,we make sure to offer you the best quality with competitive price.
3. How can I pay?
We accept many payment term, such as T/T, Western Union…
4. When I receive it after pay?
Normal models can be delivered with 4-7days, please contact us to check transport time to your address.
5. How to deliver?
We can send by Express, by Sea and by Air.
7.What should I do if I do not know how to use?
We provide detailed operation instructions, operation videos, and engineer's online technical support.
8.What should I do if some parts broken?
We provide a 12-month warranty period and long-term maintenance services.
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