LWD 6920 capacitive current tester Features: 1. Wider measurement range and faster testing speed. 2. Support 3PT connection method, two 4PT connection methods, on-site capacitance current measurement with 1PT connection method, and capacitor bank neutral point abnormal frequency signal injection method proposed to address the inaccurate measurement of on-site 4PT connection method. 3. Industrial grade color LCD screen with a resolution of 320 × 240 dot matrix, readable under strong light. 4. More user-friendly human-computer interaction interface: (1) For some important operations and parameter settings, display their prompt information and help instructions. (2) The measurement results and related parameters are displayed and printed in more detail, making it easier for users to analyze in the future. (3) When selecting the PT connection method, the wiring schematic diagrams under various PT connection methods can be displayed, making it easy for users to distinguish the on-site PT connection method and test line connection position. (4) The status bar at the top of the screen displays the real-time insertion status of the USB drive. When operating on an unconnected device, the corresponding unconnected prompt message is displayed. 5. Real time measurement and display of zero sequence 3U0 voltage value, making it easy for users to judge the system's working status; Moreover, if the zero sequence 3U0 voltage is found to be too high during measurement engineering, the measurement process can be automatically stopped. 6. Equipped with multiple zero sequence 3U0 overvoltage protection circuits, the output terminal of the tester can withstand AC100V 50HZ voltage without damage. 7. Equipped with a built-in fully digital variable frequency inverter power supply, it has the characteristics of accurate output frequency, adjustable output current, high output efficiency, small heat generation, small size, light weight, and stable long-term operation. 8. Equipped with output short circuit protection function. 9. Equipped with a real-time clock that can display the current time and date in real time; The measurement results include the measurement date and time. 10. The storage methods for measurement data are divided into local storage and USB storage. The local storage can store 150 pieces of measurement data, and the local storage can be transferred to USB; The storage data format of USB flash drives is Word format, which can be edited and printed directly on the computer. 11. Thermal printer printing function, fast and silent. 12. Small size, light weight, easy to carry and use. Technical parameters: 1. Measurement of capacitive current 1.1 Measurement range: 0.3 μ F-200 μ F 1A~400A 1.2 Accuracy: ± (reading × 5%+2 words) 1.3 Resolution: 0.3~9.999 (0.001) 10~99.99 (0.01) 100~999.9 (0.1) ≥ 1000 (1) 1.4 Voltage level: 0.1KV~99.9KV continuously adjustable 2. Zero sequence 3U0 voltage measurement 2.1 Measurement range: 1V~100V AC50HZ 2.2 Accuracy: ± (reading × 1%+10 words) 2.3 Resolution: 1~9.999 (0.001) 10~99.99 (0.01) 3. Service conditions and appearance 3.1 Working power supply: AC100-240VAC0.8A 50/60Hz 3.2 Instrument weight: 4.5Kg 3.3 Instrument volume: 320mm (length) × 270mm wide × 150mm high 3.4 Operating temperature: -10 ℃~50 ℃ 3.5 Relative humidity: ＜ 90% without condensation
Features: 1. Wider measurement range and faster testing speed. 2. Support 3PT connection method, two 4PT connection methods, on-site capacitance current measurement with 1PT connection method, and capacitor bank neutral point abnormal frequency signal injection method proposed to address the inaccurate measurement of on-site 4PT connection method. 3. Industrial grade color LCD screen with a resolution of 320 × 240 dot matrix, readable under strong light. 4. More user-friendly human-computer interaction interface: (1) For some important operations and parameter settings, display their prompt information and help instructions. (2) The measurement results and related parameters are displayed and printed in more detail, making it easier for users to analyze in the future. (3) When selecting the PT connection method, the wiring schematic diagrams under various PT connection methods can be displayed, making it easy for users to distinguish the on-site PT connection method and test line connection position. (4) The status bar at the top of the screen displays the real-time insertion status of the USB drive. When operating on an unconnected device, the corresponding unconnected prompt message is displayed. 5. Real time measurement and display of zero sequence 3U0 voltage value, making it easy for users to judge the system's working status; Moreover, if the zero sequence 3U0 voltage is found to be too high during measurement engineering, the measurement process can be automatically stopped. 6. Equipped with multiple zero sequence 3U0 overvoltage protection circuits, the output terminal of the tester can withstand AC100V 50HZ voltage without damage. 7. Equipped with a built-in fully digital variable frequency inverter power supply, it has the characteristics of accurate output frequency, adjustable output current, high output efficiency, small heat generation, small size, light weight, and stable long-term operation. 8. Equipped with output short circuit protection function. 9. Equipped with a real-time clock that can display the current time and date in real time; The measurement results include the measurement date and time. 10. The storage methods for measurement data are divided into local storage and USB storage. The local storage can store 150 pieces of measurement data, and the local storage can be transferred to USB; The storage data format of USB flash drives is Word format, which can be edited and printed directly on the computer. 11. Thermal printer printing function, fast and silent. 12. Small size, light weight, easy to carry and use.
