Series automatic anti-interference dielectric loss tester

HNJS-101 series anti-interference dielectric loss automatic testeradopts frequency conversion power supply technology, uses single chip microcomputer, and modern electronic technology for automatic frequency conversion, analog/digital conversion and data operation; achieves strong anti-interference ability, fast test speed, high precision, full automatic digitization, easy operation. Widely used in power industry transformer, transformer, bushing, capacitor, arrester and other equipment dielectric loss measurement.
 

product characteristics

1,dielectric loss automatic tester adopts complex current method, measuring capacitance, dielectric loss and other parameters. The precision of test results is high, which is convenient for automatic measurement.

2. The instrument adopts frequency conversion technology to eliminate 50Hz power frequency interference on site, and reliable data can be measured even in strong electromagnetic interference environment.

3. The instrument adopts large-screen LCD, and the test process is intuitive and easy to operate through Chinese menu prompts.

4,the automatic dielectric loss tester is easy to operate, the measurement process is controlled by the microprocessor, as long as the appropriate measurement method is selected, the data measurement can be automatically completed under the control of the microprocessor.

5, integrated models, with standard capacitors and high voltage power supply, easy to field test, reduce field wiring.

6, 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.

7, set CVT test function, can realize CVT self-excitation method test, no external accessories, only one measurement, C1,C2 capacitance and dielectric loss are all measured.

8, reverse wiring test using ivddv technology, eliminating the previous phenomenon of reverse wiring data instability.

9, with reverse wiring low voltage shielding function, in the case of 220kV CVT bus grounding, C11 can be carried out without removing the line 10kV reverse wiring dielectric loss measurement

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

12, grounding protection function, when the instrument is not grounded or poorly grounded, the instrument does not enter the normal program, does not output high voltage. Over-current protection function, the instrument will not be damaged when the test sample is short-circuited or broken down.

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 tester.

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technical parameters

Accuracy: Cx: (Reading 1%+1pF)

              tg: (Reading 1%+0.00040)

2, anti-interference index: frequency conversion anti-interference, in 200% interference can still achieve the above accuracy

3, capacitance range: internal high voltage: 3pF~60000pF/10kV 60pF~1 F/0.5 kV

      External high voltage: 3pF~1.5 F/10kV 60pF~30 F/0.5 kV

      Resolution: * High 0.001pF, 4 significant digits

4, tg range: unlimited, resolution 0.001%, capacitance, inductance, resistance three kinds of test samples automatically identified.

5. Test current range: 10A ~1A

6, internal high voltage: set voltage range: 0.5~10kV

     * Large output current: 200mA

      Pressure rise and fall mode: continuous smooth adjustment

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

                45/55Hz, 55/65Hz, 47.5/52.5 Hz automatic double conversion

    Frequency accuracy: 0.01Hz

7, external high voltage: positive wiring * large test current 1A, power frequency or frequency conversion 40-70Hz

             High test current 10kV/1A, power frequency or frequency conversion 40- 70Hz

8, CVT self-excitation method low voltage output: output voltage 3~50V, output current 3~30A

Measurement time: about 40s, related to the measurement method

10, input power supply: 180V~270VAC, 50Hz/60Hz 1%, mains or generator power supply

11. Computer interface: standard RS232 interface

12. Printer: Weihuang A7 thermal micro printer

13. Ambient temperature:  -10℃~50℃
Wuhan Huaneng Lianchuang Electric Co., Ltd.