Distributed fiber distribution terminal with a differential function (SDAF-8608 intelligent distributed DTU)
ability SDAF-8608 intelligent distributed collection and distribution terminal includes a three-phase current, phase voltage, zero sequence current, zero sequence voltage satisfies computing active power, reactive power requirements, power factor, frequency, and electrical energy. Its rich FA function as follows:
1: the line-side distributed SDAF-8608 FTU function.
a) Each line counters differential function with optical fiber-based distributed FTU SDAF-8608, a variety of short-circuit failure when the protected zone, the fiber distribution terminal starts differential protection, instantaneous jump two cable fault breaker (three-phase trip) side, fault isolation.
b) a braking mode differential protection mode optical fiber should be a ratio of the brake, and should be applied to different ends of the current transformer ratio. Fiber differential protection should Current Differential protection, differential protection should trip blocking function FTU communication failure.
c) an optical fiber having a differential protection programmable I / O, and can switch to the unit acquired via contralateral Fiber Channel can be used as an intermediate for the amount of side logic programming means, or output via an output port .
d) the distribution terminal to be equipped with distributed independent communication port, the communication may be integrated within the automated system; and each FTU should have at least two independent and simultaneously the standard communication interface; can detect, record and display and upload fault current; real-time detection, analysis side analog line vector relation, and can be displayed on the display screen and by maintaining a software call.
2 distribution feeder side terminals distributed SDAF-8608 Function:
A) protection devices, the feeder circuit device having a good interface, LCD display, can display the full failure information (fault type, fault time, fault value, etc.) to facilitate the inquiry. Protection panel has a LED indicator, indicating various signals can customize or fault status and alarm information.
b) a lightning overvoltage, a circuit operation of a system failure and other strong interference, not malfunction and refuse to move. Protection against electromagnetic interference devices should meet the national standard line of standard and related standards.
c) protection independent of the protection device, the protection function is completely dependent on the communication network, the network does not affect the protection paralysis or not running. Line current protection should have a full set of three sections protected phase current and zero sequence overcurrent protection protection configuration. Indicators should meet the requirements of various functions related to the power industry standards or national standards.