Product Details

Dielectric loss measurement is a basic insulation test method that can effectively detect overall moisture and local defects in insulation. It is widely used in electrical manufacturing, electrical equipment installation, commissioning, and preventive tests. Measuring the dielectric loss of transformers, transformers, reactors, capacitors, bushings, and arresters is the most fundamental method to evaluate their insulation performance. The dielectric loss tester breaks away from the traditional bridge measurement method, adopting variable frequency power supply technology, using microcontrollers and modern electronic technology for automatic frequency conversion, analog-to-digital conversion, and data calculation; achieving strong anti-interference ability, fast test speed, high accuracy, full automatic digitization, and easy operation; the power supply uses a high-power switching power supply, outputting 45Hz and 55Hz pure sine waves, automatically boosting voltage, providing up to 10 kV voltage; automatically filtering out 50Hz interference, suitable for field tests in substations and other places with strong electromagnetic interference. Widely used in the power industry for dielectric loss measurement of transformers, transformers, bushings, capacitors, arresters, and other equipment.

1. USB Port - Used to export stored data.

2. RS232 Interface - Used to connect to a computer for control and data upload.

3. CX Socket - Test signal input. When using normal connection, connect the shielded cable, which comes with a shielded alligator clip, 8m, connected to the low end of the test object. When using reverse connection, leave it floating.

4. Color Touch Screen - 640×480, displays menus, prompts, and measurement results.

5. Printer - Prints measurement data.

6. CN Socket - External standard capacitor signal input, leave floating when using internal standard capacitor.

7. Self-Excitation Current Output - Used for CVT measurement, connect to auxiliary winding dn.

8. Self-Excitation Current Output - Used for CVT measurement, connect to auxiliary winding da.

9. Power Switch - Main power on/off.

10. High Voltage Switch - Controls the internal high voltage power supply. Only close when using external high voltage, keep open at other times.

11. Power Socket - AC220V±10%, 50±1Hz, with 5A fuse.

12. Ground Terminal - Used for ground wire connection.

Product Features

1. Uses FFT digital filtering technology for capacitance and dielectric loss measurement, high accuracy, suitable for automated testing.

2. Variable frequency anti-interference technology eliminates 50Hz power frequency interference, ensuring reliable data even in strong electromagnetic environments.

3. Full touch large screen LCD display, graphical interface, clear operation steps, no special training required, easy touch operation.

4. Data storage: Built-in calendar chip and large capacity memory, can save and view historical test data, print with time display.

5. Advanced data management: Supports USB export, equipped with PC software for data viewing and management.

6. Easy operation, microprocessor controls the measurement process, automatically completes after selecting measurement mode.

7. Integrated design, built-in standard capacitor and high voltage power supply, suitable for field testing.

8. High accuracy for oil dielectric loss measurement, only requires standard oil cup and test leads.

9. Reverse connection low voltage shielding function, can perform 10kV reverse connection measurement on C11 without disconnecting wires.

10. Can identify external high voltage frequency 40-70Hz, allows using power frequency or series resonant power supply for large capacity high voltage dielectric loss testing.

11. CVT self-excitation test, with 4 protection limits for high/low voltage and current.

12. Automatically test C1 and C2 capacitance and dielectric loss, as well as total CVT capacitance and total dielectric loss.

12. CVT ratio measurement, polarity and phase error.

13. Built-in thermal printer with calendar clock, USB output test report.

14. PC interface, one computer can control 32 instruments, can be integrated into high voltage test vehicle for measurement, data processing, and report generation.

15. Ground protection: No high voltage output when not properly grounded. Overcurrent protection: Safe protection in case of short circuit or breakdown.

16. Electric shock protection: Immediately cut off high voltage when operator accidentally contacts live parts.

Product Parameters

Accuracy: Cx: ±(reading×1%+1pF)

tgδ: ±(reading×1%+0.00040)

Anti-interference capability: Variable frequency anti-interference, maintains accuracy under 200% interference

Capacitance range: Internal high voltage: 3pF-60000pF/10kV, 60pF-1μF/0.5kV

External high voltage: 3pF-1.5μF/10kV, 60pF-30μF/0.5kV

Resolution: Up to 0.001pF, 4 significant digits

tgδ range: Unlimited, resolution 0.001%, automatic identification of C/L/R.

Test current: 10μA-5A

Internal high voltage: 0.5-10kV (customizable to 12kV)

Maximum output current: 200mA

Voltage setting: Arbitrary, e.g., 5123V.

Test frequency: 40-70Hz, e.g., 48.7Hz

50±0.1Hz to 50±10Hz automatic dual frequency.

60±0.1Hz to 60±1Hz

Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.