Dielectric loss measurement is a very basic method in insulation test. It can effectively detect the whole damp deterioration and partial defects of electrical equipment insulation. It is widely used in electrical manufacturing, installation of electrical equipment, handover and preventive testing. The measurement of dielectric loss of transformer, transformer, reactor, capacitor, bushing and arrester is the most basic method to measure their insulation performance. High-voltage dielectric loss tester breaks through the traditional bridge measurement mode, adopts frequency conversion power supply technology, uses single-chip computer and modern electronic technology to automatically convert frequency, analog/digital conversion and data operation; achieves strong anti-interference ability, fast testing speed, high accuracy, automatic digitalization and easy operation; power supply adopts high-power switching power supply, and outputs 45Hz and 55Hz pure sine. Wave, automatic pressure, can provide the highest voltage of 10 kilovolts; automatic filter 50Hz interference, suitable for field test of large electromagnetic interference such as substation. It is widely used in dielectric loss measurement of transformer, transformer, bushing, capacitor, lightning arrester and other equipment in power industry.

The instrument can measure the following parameters and display them digitally:

The capacitance value CX of the tested product is in units of pF or nF, 1nF = 1000pF.

The dielectric loss value tg_ delta of the tested product is displayed as% of the total.

Accuracy: Cx: + (reading *1%+1pF)

TG delta: + (reading *1%+0.00040)

Anti-jamming index: frequency conversion anti-jamming, under 200% interference can still achieve the above accuracy.

Capacitance Range: Internal High Voltage: 3pF-60000pF/10KV, 60pF-1uF/0.5KV

External High Voltage: 3pF~0.5uF/10KV 60pF~10uF/0.5KV

Resolution: Maximum 0.001 pF, 4-bit significant digits

TG Delta range: unlimited, resolution 0.001%, automatic identification of capacitance, inductance and resistance.

Test Current Range: 10_A~1

Internal High Voltage: Setting Voltage Range: Voltage Resolution of 0.5-10 kV: 1V Accuracy: 2%

Maximum output current: 200 mA

Step-up and step-down mode: continuous smooth adjustment

Test frequency: 45, 50, 55, 60, 65 Hz single frequency

45/55Hz, 55/65Hz, 47.5/52.5Hz automatic dual frequency conversion

Frequency accuracy: +0.01Hz

External High Voltage: Maximum Test Current 1A, Power Frequency or Frequency Conversion 40-70Hz for Positive Connection

Maximum test current 10 kV/1A, power frequency or frequency conversion 40-70 Hz in reverse connection

Low Voltage Output of CVT Self-excitation Method: Output Voltage 3-50V, Output Current 3-30A

Measuring time: about 36 seconds, depending on the measuring method

Input power supply: 180V-270VAC, 50Hz+1%, municipal or generator power supply

Computer Interface: Standard RS232 Interface

Printer: Weihuang A7 Thermal Micro Printer

Ambient temperature: - 10 ~50

Relative humidity: <90%

Shape size: 460 x 360 x 350 mm

Instrument weight: 28KG

1. Complex current method is used 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. The instrument adopts large screen LCD, and the test process is intuitive and easy to operate through Chinese menu prompt.

4. 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.

5. Integrated model, with standard capacitor and high voltage power supply, is convenient for field test and reduces field wiring.

6. 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.

7. With the function of CVT test, the self-excitation test of CVT can be realized. No external accessories are needed and only one measurement is needed. The capacitance and dielectric loss of C1 and C2 can be measured.

8. The ivddv technology is used in the reverse wiring test, which eliminates the instability of the previous reverse wiring data.

9. It has the function of low-voltage shielding of reverse connection. Under the condition of 220 kV CVT bus grounding, it can measure the dielectric loss of 110 kV reverse connection without disconnection.

10. It has the function of measuring high voltage dielectric loss. It can use high voltage transformer or series resonance to carry out dielectric loss test of more than 10 kV voltage.

12. 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.

13. 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.