Table of Contents
Features of charging device/ power supply
1) The integration of power charging device and control module bus can facilitate reliable monitoring of power supply operation.
2) A specially designed power supply module, which integrates AC/DC and charge/ discharge management through CPU control. The utility model has the advantages of high efficiency, small size, light weight, flexible installation, high reliability and complete protection.
3) Supporting double lines AC backup power supply. Soft switching technology is employed to ensure the fast input and switching of AC power and battery, and ensure the reliability of power supply of the device.
4) Complete battery operational control and maintenance. According to the charging and discharging curve of the battery itself, the power module can protect and cut off the battery, even charge floating charge control and so on to make the battery work in the best state and reasonably control the charging and discharging depth of the battery.
5) Supporting multiple voltage levels of power supply. In order to adapt to the diversified power supply modes of distribution network, it is compatible with voltage inputs such as AC230V/AC120V.
Features of core measurement and control unit
1) The hardware platform technology of high-speed industrial grade 32-bit processor is adopted to improve the efficiency, rapidity and precision of the system.
2) The core unit is MCF5275 microcomputer programmable protection measurement and control device, which adopts large capacity and resource redundancy design, and can be used in different main wiring modes. The protection function also supports multiple fault isolation modes of operation. For example, current-time mode, voltage-time mode, current-voltage-time mode, and user demarcation switch operation mode.
3) High reliability design
In line with the stable, reliable, durable design principles, all industrial-grade components are adopted, and all connections with the outside world are fully isolated, with built-in lightning protection circuit and power filter. It has a professional EMC design. The real-time monitoring of the input power supply, analog and digital power supply, together with the perfect on-line self-test program, fundamentally ensures the reliability of its operation.
4) Powerful graphics programmability
Through the matching software package, these resources can be easily and intuitively configured in the Windows environment, with simple operation, flexible application and strong adaptability. Through the combination of logic elements, other different protection functions can be extended on the same FRTU to realize multi-purpose use of one machine.
5) Flexible and convenient wiring mode
Three AC voltage inputs can be connected to phase voltages, zero-sequence voltages, or unbalanced voltages, and suitable for various PT wiring modes. All three AC current inputs can be connected to two or three elements; Another AC current channel can be connected to zero sequence current, unbalanced current, or line current. The wiring mode can be easily changed through simple setting.
6) High-precision measurement and metrology
Frequency tracking technology is adopted to monitor the change of system frequency in real time and adjust the time interval of data sampling in real time, which can completely eliminate the calculation error caused by fundamental frequency fluctuation and ensure that the fundamental frequency component, harmonic component and sequence component of the system can be accurately calculated when the fundamental frequency deviates from the power frequency 50HZ. The high-precision measurement ensures that the voltage, current and power factors reach level 0.2, and the four-quadrant power measurement and electrical metrology reach level 0.5.
7) Rich interface resources
Provide DB-9 RS232 interfaces for maintenance, two RJ45 RS232 interfaces, two RJ45 RS232/485 interfaces, and two network interfaces. At the same time, the serial communication port can be expanded by expanding the communication board, and there can be up to 17 serial ports
8) Sequential event record
10,000 pieces of SOE information can be provided for accident analysis and diagnosis; The time resolution is 1ms; In addition to recording various protection action information, the SOE also records the filtered on-off displacement and other information helpful for accident analysis, including device power-up, device power-down, device reset, signal reversion, remote control operation, modification of setting value, device self-test error and so on.
9) GPR B code time pairing function
10) Open interface design
RS-232, RS-485, Ethernet, GPRS/CDMA and other communication modes are provided. Modbus, IEC60870-5-101\103\104, DNP3.0 and other communication protocols are supported. At the same time, different protocols can be used in different networks to provide users with high reliability of network communication.
11) Power-off holding function
Under the condition of gap interruption and power failure within 100ms, the device will not lose power. After 50ms of power failure, the device generates power-down SOE and saves important data.