Product Description

The LDDR-801 Power Grid Capacitance Current Tester is a new generation product developed based on the previous generation tester that used the PT secondary side injection signal method. It has been redeveloped and redesigned. It features a new hardware structure, a faster ARM processor, and an AD converter. It is equipped with a brand new all-digital variable frequency inverter power supply, which is efficient, has low heat generation, small size, and light weight. Compared to the previous generation, the new model has significantly reduced volume and weight, making it more portable and suitable for on-site testing. It introduces a new measurement method to address the issue of low accuracy in testing grid capacitance current with 4PT connections. It can accurately measure zero sequence 3U0 voltage at any time (including during the measurement process), facilitating users in judging the system's operating status. Additionally, if the zero sequence 3U0 voltage is too high during testing, the measurement process can be automatically stopped.

The LDDR-801 Power Grid Capacitive Current Tester features an industrial color LCD screen (readable under bright light), Chinese menu, and a more user-friendly human-machine interface, with features such as USB storage and data printing. It has simple wiring, fast testing speed, high stability, and accurate data, significantly reducing the labor intensity of the testers and improving work efficiency.

Product Synonyms: Automatic Capacitance Current Tester, Micro-type Capacitance Current Tester, Distribution Network Capacitance Current Measuring Instrument, Distribution Network Capacitance Current Tester, Distribution Network Capacitance Current Testing System, Automatic Capacitance Current Tester, Micro-type Distribution Network Capacitance Current Tester, Capacitance Leakage Current Tester

Product Features

1. Broader measurement range, faster testing speed.

2. Supports 3PT connection method, two types of 4PT connection methods, and 1PT connection method for on-site capacitance current measurement, as well as the capacitive group neutral point heterodyne signal injection method proposed for the inaccurate measurement of on-site 4PT connection methods.

3. Industrial-grade color LCD display with a resolution of 320×240 dots, readable under bright sunlight.

4. Enhanced User-Friendly Human-Machine Interface: Provides prompts and help descriptions for important operations and parameter settings. Measurement results and related parameters are displayed and printed in greater detail, facilitating future analysis by users. When selecting the PT connection method, it shows wiring diagrams for various PT connection types, aiding users in identifying the on-site PT connection method and testing line connection positions. The status bar at the top of the screen displays the real-time status of USB drive insertion. When operating unconnected devices, it shows corresponding unconnected prompt information.

5. Real-time measurement and display of the zero sequence 3U0 voltage value, facilitating the user in assessing the system's operational status; in addition, if an excessive zero sequence 3U0 voltage is detected during the measurement process, the system can automatically halt the measurement.

6. Equipped with a multi-functional 3U0 overvoltage protection circuit, the tester's output end can withstand AC100V 50Hz voltage without damage.

7. Equipped with a built-in full digital inverter power supply, featuring accurate output frequency, adjustable output current, high efficiency, low heat generation, compact size, lightweight, and stable operation over long periods.

8. Features short-circuit protection function.

9. Equipped with a real-time clock, it can display the current date and time in real time; measurement results include the date and time of measurement.

10. Measurement data storage options include local storage and USB drive storage. Local storage can hold up to 150 measurement data entries and can be transferred to a USB drive; data stored on a USB drive is in Word format, allowing for direct editing and printing on a computer.

11. Thermal printer with quiet, fast printing function

12. Compact and lightweight, easy to carry and use.