Wholesale of domestic variable frequency dielectric loss tester

　　Variable frequency dielectric loss testerDielectric loss measurement is a fundamental method in insulation testing, which can effectively detect the overall moisture degradation and deterioration of electrical equipment insulation, as well as local defects. Widely used in electrical manufacturing, electrical equipment installation, handover, and preventive testing. The measurement of dielectric loss of transformers, mutual inductors, reactors, capacitors, bushings, lightning arresters, etc. is a fundamental method for measuring their insulation performance. The dielectric loss tester breaks through the traditional bridge measurement method, adopts variable frequency power supply technology, and uses microcontrollers and modern electronic technology for automatic frequency conversion, analog-to-digital conversion, and data operation; Reaching the resistance barDisturbance energyStrong strength, fast testing speed, high accuracy, fully automated digitization, and easy operation; The power supply adopts a high-power switching power supply, which outputs pure sine waves at 45Hz and 55Hz, automatically applies voltage, and can provide up to 10 kV voltage; Automatically filter out 50Hz interference, suitable for on-site testing in substations and other areas with high electromagnetic interference. Widely applicable for dielectric loss measurement of transformers, mutual inductors, bushings, capacitors, lightning arresters and other equipment in the power industry.

1. Printer - prints measurement data.

2. Display -128 × 64 dot matrix LCD display, displaying menus, various prompt information, and measurement results.

3. Key - Select the menu item, and the selected item will be displayed in white font.

4. ▲ key - Modify menu content using a loop scrolling method.

5. ▼ - Modify menu content using a loop scrolling method.

6. Confirm key - Press this key on the "Test" option to enter the testing state.

7. Power switch - turning on and off the power supply of the entire machine.

8. Power socket - AC 220V ± 10%, 50 ± 1Hz power input port, with fuse compartment.

9. Self excitation method current output terminal - measure the terminals of CVT.

10. Grounding - the terminal block for the grounding wire.

11. CX socket - is the measurement input terminal for the test sample signal, connected by a low-voltage cable when connected in a positive direction. This cable has a single-layer shielding with a specially designed crocodile clip, is 8m long, and is connected to the low end of the test sample. When reversing the wiring, this end is vacant.

12. CN socket - is the measurement input terminal for external standard capacitance signals, which is vacant when using internal standards.

13. HV socket - high voltage lead out terminal, connected by high voltage cable, connected to the high voltage end of the test sample. Output 10kV high voltage.

RS-232 interface, used to connect to a computer and upload data.

15. Grounding, can be suspended in the air

16. High voltage switch

　　Variable frequency dielectric loss testerIntroduction to the instrument:

1. The instrument adopts the complex current method to measure capacitance, dielectric loss, and other parameters. The test results have high accuracy, making it easy to achieve automated measurement.

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

3. The instrument adopts a large screen LCD display, and the testing process is both intuitive and easy to operate through Chinese character menu prompts.

4. The instrument is easy to operate, and the measurement process is controlled by a 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 model, equipped with standard capacitors and high-voltage power supply, convenient for on-site testing and reduces on-site wiring.

6. The instrument has high measurement accuracy and can meet the requirements of oil dielectric loss measurement. Therefore, only a standard oil cup and a testing line are needed to achieve oil dielectric loss measurement.

7. The CVT testing function can achieve self-excited testing of CVT without the need for external accessories. Only one measurement is required to measure the capacitance and dielectric loss of C1 and C2.

8. The reverse wiring test adopts IVDDV technology, eliminating the previous phenomenon of unstable reverse wiring data.

9. Equipped with reverse wiring low-voltage shielding function, C11 can perform 10kV reverse wiring dielectric loss measurement without disconnecting the wire when the 220kV CVT bus is grounded

10. It has the function of measuring high voltage dielectric loss and can use high-voltage transformers or series resonance to conduct dielectric loss tests exceeding 10kV voltage.

12. Grounding protection function: When the instrument is not grounded or poorly grounded, it will not enter the normal program and will not output high voltage. The overcurrent protection function ensures that the instrument is not damaged in the event of a short circuit or breakdown of the test sample.

13. Electric shock protection function: When the instrument operator accidentally gets an electric shock, the instrument will immediately cut off the high voltage to ensure the safety of the test personnel Product parameters

Accuracy: Cx: ± (reading x 1%+1pF)

TG δ: ± (reading x 1%+0.00040)

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

Capacity range: Internal high voltage: 3pF~60000pF/10kV 60pF~1 μ F/0.5kV

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

Resolution: up to 0.001pF, 4 significant digits

Range of TG δ: unlimited, resolution 0.001%, automatic identification of three types of samples: capacitance, inductance, and resistance.

Test current range: 10 μ A~1A

Internal high voltage: Set voltage range: 0.5-10kV

Output current: up to 200mA

Pressure rise and fall method: continuous smooth adjustment

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

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

Frequency accuracy: ± 0.01Hz

External high voltage: The test current can reach 1A when connected positively, with a frequency range of 40-70Hz for power frequency or variable frequency

When reversing the wiring, the test current can reach 10kV/1A, and the power frequency or frequency conversion is 40-70Hz

CVT self-excited low-voltage output: output voltage 3-50V, output current 3-30A

CVT ratio measurement:

Variable ratio measurement accuracy: ± reading × 1% Variable ratio measurement range: 10~99999

Phase measurement accuracy: ± 0.1 ° Phase measurement range: 0-359.9 °

Measurement time: about 40 seconds, depending on the measurement method

Input power supply: 180V~270VAC, 50Hz ± 1%, powered by mains or generator

Computer interface: Standard RS232 interface

Printer: Thermal Micro Printer

Environmental temperature: -10 ℃ to 50 ℃

Relative humidity:<90%<>

Dimensions: 460 × 360 × 350mm

Product Features