1.Product Overview

The SMR-228F (G/T) box-changing intelligent monitoring device has the analog quantity acquisition, non-electricity protection, remote control and communication functions of the low-voltage side of the photovoltaic box or the high-low voltage side of the wind farm box, and the device can also be integrated with communication management. Machine, fiber switch, data communication for accessing, transmitting inverters in the power generation unit, intelligent combiner box, etc., realizing the centralized transmission and transmission of the intelligent device communication information of the photovoltaic power generation subsystem, and adopting self-healing ring fiber Ethernet Access to the booster station integrated system, and then realize the remote management and automatic monitoring of the photovoltaic power generation unit or wind farm by the booster station, to meet the comprehensive intelligentization of the photovoltaic power station and the wind farm, and the operation management of “unmanned duty and few people on duty” the way.

2.product features

1) The reinforced unit chassis is designed to resist strong vibration and strong interference, especially suitable for harsh environments. It is suitable for wide temperature working environment of -40 °C ~ 70 °C.

2) The integrated circuits of the device are all made of industrial products or military products, so that the device has high stability and reliability. Meet the requirements of photovoltaic electric field shutdown operation.

3) The device collects the three-phase current, three-phase voltage, frequency, power factor, active power and reactive power of each side of the low-voltage side of the transformer for telemetry of the integrated system.

4) The setting of the device is based on the protection function of electric quantity, three-stage current protection with composite voltage blocking, zero sequence current, over voltage, under voltage, CT disconnection, PT disconnection and so on.

5) SMR-228F (G) device has a maximum of 48 switch input functions, which can collect load switch position, low voltage circuit breaker position signal, low voltage isolating switch fuse group position signal, small open position signal, fuse blow signal , ordinary switch signal such as box change door switch signal; can also realize heavy gas action trip, light gas action alarm, SF6 air pressure abnormal alarm, transformer high temperature alarm, transformer ultra high temperature trip, low oil level of transformer, etc. 8 programmable standby non-electricity functions (4-way trip, 4-way alarm) for easy non-power expansion.

6) All the protection functions of the device are set with the control word, and the password can be conveniently transferred through the LCD input password.

7) The device has two channels of temperature and two channels of power (0-5V DC voltage or 4-20mA current). It can be used to collect the temperature of the box and related temperature, and set the temperature over limit alarm function to facilitate the photovoltaic field. Monitoring.

8) The device is equipped with 6 opening and closing, which is convenient for the expansion of the control function of the box. The remote control and control operation can be realized for the switch with electric operation function.

9) The device adopts graphic liquid crystal, full Chinese display, menu-type human-computer interaction, real-time display of various operating states and data, detailed and intuitive information, convenient operation and debugging.

10) Large-capacity information record: 16 recent history reports can be saved, with action parameters, and power-down hold.

11) The structure of the device is designed according to the requirements of the box change switch cabinet, the size is small, the installation method is simple, and the wiring is convenient.

12) Converged communication management machine, fiber switch, and perfect measurement and control protection function can reduce the investment cost of two-thirds of the measurement and control communication equipment of photovoltaic power station.

13) Provide 2 Ethernet ports, 2 optical Ethernet ports and 8 RS485 interfaces to ensure the reliability of communication under long distance and harsh conditions; built-in rich communication protocol library, good third-party system and device protocol Support, communication protocol supports IEC60870-5-103/104, IEC61850 and Modbus, can be easily connected to the power station monitoring system, supports IEC61850-8-l specific communication service mapping (SCSM), can be realized with the new intelligent boost substation system Seamless.