JKZD-DF8800 Distribution monitor measurement terminal

1.technique features:
1)Adopt high-speed of 32 bit embedded processor and operation system, and 4mb MFS.
2)Communication channel adopts high-speed of industry GPRS/GSM/CDMA module. Support TCP/UDP/SMS wireless network communication mode.
3)Embedded high speed and precision of alternating voltage current collect module, high precision sampling and energy measurement on real-time.
4)Support communication regulation of master station: <>. <>, and communication regulation adopts share mode. Make users’ convenience to develop diverse of relative application and expanse regulation depend on what they requires.
5)Support voltage current 2-21 harmonic rate.
6)Support communication regulation of energy meter: DL/T645-1997(part of regulations). Landis+gyr B/D. Red-phase. ABB. Clou. HND. Actaris. IEC1107 and wasion. Regulation of meter adopts share mode, based on expand and increase depends on what locale requires.
7)Support online upgrade of local/remote software, and amend terminal parameters.
8)excellent electromagnetism compatibility performance, resist high-voltage pulse, strong magnetic field and static, lighting strike surge, possess the scope of stronger temperature self-adapting.
9)Three-phase power supply, load management terminal will work normally when break off one-phase on three-phase three-wire and one or two-phase on three-phase four-wire.
10)Low power consume
2.main functions:
1)ARM：
Support DL/T-645, IEC1107, and regulation of the meter are used generally. Terminal also supports at least two type of regulation on meter connection at the same time, and supports master station remote upgrade for terminal meter regulation storeroom. ARM through RS485 port, and to record various real-time, curve, day, month of meter data. Energy measurement and alternating sampling of self-terminal also possess various real-time data, curve data, statistic data on day and month.
Terminal can keep saving at least 9 meters of 60 days curve data.
2)Energy measurement：
Measure bi-directional active energy, four-quadrant reactive energy and bi-directional reactive energy can be set the sum of any two phases.
3)AC sampling：
Collect and display voltage, current, power, power factor, maximum demand, and residual current these kind of alternating flux.
4)measure precision：
Active class 0.5, reactive class 1.0. harmonic achieves 21 times at most, and precision satisfy state harmonic class B standard.
5)data statistic and manage：
Possess loading rate (count real-time loading rate and day maximum loading rate), supply power reliability (record times of power break-off, start time), current imbalance rate, day extremum, analyze loss (by total of three-phase on day, month), and depends on voltage quality passing rate to Stat and analyze.
6)terminal cascading：
Terminal cascading adopts RS485 port connect with adjoining other distribution monitor terminal or concentrator of low voltage concentrate reading meter system, and by command and data to transmit, achieves GPRS/CDMA of channel share.
7)data compress：
Terminal can use specific compress scheme to manage communication data
8)Harmonic detection：
Counting distort rate for each phase voltage or current, counting harmonic content for each phase voltage or current about 21 times.
9)remote communication：
Support mode of GPRS, CDMA, message and dial, achieve remote transmit for data; communication module adopts wireless chip of some essential firms; part of tekecommunications circuit designed by modularize, easy maintenance and electrification replacing; users only replacing the communication module if they want to change the type of communication network, do not need to change the whole terminal.
10)Local display:
Terminal adopts back-light, long-life, anti-static, prevent ultraviolet radiation of LCD, and the scope of working temperature is minus 25 to 75 degree. Chinese characteristic to display measurement data, count and record parameter, also display several of measurement value, and switch different parameter when user press operation button.
11)Event record and initiative alarm:
Record program event with demand reset, and power-off information with abnormal alert, also for report automatically. It will immediate report the corresponding warning to master station when terminal detected itself or unusual looping, and record at least 400 items alert event. Event of automatic alert include reverse phase sequence voltage with current anti-polarity, terminal power cut or on, electricity overload, over-current, over-voltage, not enough voltage, current imbalance, reactive over compensation, reactive decline compensation, harmonic exceeded and so on.
12)Security defend policy:
Terminal adopts the mode of countersign and password for different communication channel and important operatio