Brief Introduction of Medium Voltage Carrier Technology
Product overview
Medium voltage carrier communication uses 10KV power line as transmission channel，which has the advantages of less investment, simple construction, convenient maintenance and management, synchronization with the construction of power grid, opened fast with the new project and consistent with the power system on the coverage.
Medium voltage carrier system consists of medium voltage host carrier, medium voltage slave carrier and coupler,which can be used in the electric information acquisition and distribution automation field

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Technical parameter
（1）Data communication interface：Ethernet、RS232、RS485、USB、Infra-red、WiFi
（2）Transmission distance：20km
（3）Carrier data rate：150kbps
（4）Carrier frequency：5KHz~500KHz
（5）Bit error rate：＜10^-6
（6）Signal coupling mode：Overhead lines using capacitive coupling, cable lines using inductive coupling
（7）Working temperature：-40℃~+75℃
Main function
（1）Support transparent transmission of communication data
（2）Support exchange the information acquired from electric energy data acquire system
（3）Support routing functions, including automatic networking, dynamic routing, multi-level relay and automatic route selection
（4）Support remote management functions, including remote maintenance, remote parameter view and settings and remote software upgrades
（5）Supports one host carrier with multiple slaves carrier (up to 16), one slave carrier with 2 terminal devices（6）Support network port、serial port、RS485、USB、Infra-red、WiFi and other ways to communicate and maintain
（7）Support network port、GPRS、serial port、RS485、Infra-red、WiFi and other ways to connect to master and other terminal equipment
（8）Support automatic identification of multi protocols; the main station system can automatically identify different protocols when communicating with terminal equipment.
（9）Support firewall function; Isolate all data which is not related to the communication service in the network；
（10）Support data encryption function; for high security level data, use encryption service to ensure the safety and reliability of user data
（11）Support most compression and large data transfer function
Technical advantage
（1）Transceiver with OFDMA technology，the maximum communication rate is up to175kbps；
（2）Has the ability to evaluate the in-band noise of the signal channel
（3）Using FEC error correction technology to reduce the transmission error rate
（4）Using impedance matching technology to achieve the matching of the complex impedance of the line
（5）Deep relay function: any medium voltage slave carrier can be used as a relay device to relay the received carrier signal, which can effectively extend the transmission distance of the carrier signal
（6）Efficient networking and topology management capabilities, which can make medium voltage host carrier and medium voltage salve carrier(distributed along the 10KV medium voltage lines) form an efficient and stable communication network.
（7）Using lightning protection circuit to effectively avoid the impact of lightning and surge