DARUI Electric recommends:
Performance Characteristics of JSY-03 Full-Automatic Anti-Interference Dielectric Loss Tester
1. The instrument adopts the complex current method to measure capacitance, dielectric loss, and other parameters. The test results are highly accurate and facilitate automated measurement.
2. The instrument uses frequency conversion technology to eliminate 50Hz power frequency interference on site, ensuring reliable data even in strong electromagnetic interference environments.
3. The instrument features a large-screen LCD display, and the test process is guided by Chinese menu prompts, making it intuitive and easy to operate.
4. The instrument is easy to operate; the measurement process is controlled by a microprocessor. Simply select the appropriate measurement mode, and the data measurement will be automatically completed under microprocessor control.
5. Integrated design with built-in standard capacitor and high-voltage power supply, facilitating on-site testing and reducing field wiring.
6. The instrument offers high measurement accuracy and meets the requirements for oil dielectric loss measurement. Therefore, it can measure oil dielectric loss by simply equipping with a standard oil cup and dedicated test leads.
7. Equipped with CVT test function, enabling self-excitation method testing of CVT without external accessories. Only one measurement is needed to obtain the capacitance and dielectric loss of C1 and C2.
8. The reverse wiring test adopts IVDDV technology, eliminating the previous instability of reverse wiring data.
9. With reverse wiring low-voltage shielding function, when the 220kV CVT bus is grounded, C11 can be measured for 10kV reverse wiring dielectric loss without disconnecting the wiring.
10. Capable of measuring dielectric loss at high voltages, allowing dielectric loss tests above 10kV using a high-voltage transformer or series resonance.
11. Ground protection function: if the instrument is not grounded or poorly grounded, it will not enter normal operation and will not output high voltage. Overcurrent protection: the instrument will not be damaged in case of short circuit or breakdown of the test object.
12. Electric shock protection: if the operator accidentally gets an electric shock, the instrument will immediately cut off the high voltage to ensure the safety of the test personnel.
Technical Specifications
1. Accuracy: Cx: ±(reading ×1%+1pF)
Tgδ: ±(reading ×1%+0.00040)
2. Anti-interference index: frequency conversion anti-interference, can still achieve the above accuracy under 200% interference
3. Capacitance range:
1) Internal high voltage: 3pF～60000pF/10kV 60pF～1μF/0.5kV
2) External high voltage: 3pF～1.5μF/10kV 60pF～30μF/0.5kV
4. Resolution: 0.001pF, 4 significant digits
5. tgδ range: unlimited, resolution 0.001%, automatic identification of capacitance, inductance, and resistance test objects.
6. Test current range: 10μA～1A
7. Internal high voltage: set voltage range: 0.5～10kV
1) Output current: 200mA
2) Voltage regulation method: continuous smooth adjustment
3) Test frequency: 45, 50, 55, 60, 65Hz single frequency
45/55Hz, 55/65Hz, 47.5/52.5Hz automatic dual frequency conversion
4) Frequency accuracy: ±0.01Hz
8. External high voltage: test current 1A for normal wiring, power frequency or variable frequency 40-70Hz
Test current 10kV/1A for reverse wiring, power frequency or variable frequency 40-70Hz
9. CVT self-excitation method low-voltage output: output voltage 3～50V, output current 3～30A
10. Measurement time: approximately 40s, depending on the measurement mode
11. Input power: 180V～270VAC, 50Hz±1%, mains or generator power supply
12. Computer interface: standard RS232 interface
13. Printer: Weihuang A7 thermal micro printer
14. Ambient temperature and humidity: -10℃～50℃; <90%
15. Dimensions and weight: 460×360×350mm; 28kg
Note: The above information and technical parameters are compiled and released by Yangzhou DARUI Electric Co., Ltd.
