Three-phase Four-wire Charge-controlled Smart Ener

Main Functional Features: Power measurement functions 1. Has measurement function of positive active energy, reverse active energy and measurement of quadrant reactive energy; and accordingly set the combination of active and combination of reactive energy. 2. Except for the respective record and display, the quadrant reactive energy also can be programmed by software, achieving the record and display of the combined reactive energy 1 and the combined reactive energy 2. (Note: It can automatically circle display combined reactive power 1 and combined reactive energy 2, but can only display and acquire quadrant reactive energy by pressing button). 3. With time-sharing energy measurement functions, that accumulate energy according to the corresponding period of time, store the active and reactive energy consumption of sharp, peak, shoulder, off-peak time; do not calculate the total energy consumption by simple arithmetic means adding consumption of each rate (or each time period) . 4. With function of measuring split-phase active energy, does not use simple arithmetic means to measure total split-phase energy consumption. 5. Can store electricity data of 12 settlements date; the settlement time can be set for any time on the hour of any day in a month. Demand Measurement 1. To measure two-way maximum demand maximum demand of period-sharing and the corresponding date and time, and store data with time mark. 2. The maximum demand can be manually (or use the hand-held unit) cleared; with measures of preventing non-authorized operation of max demand clearance manually. 3. Maximum demand measured by sliding way, and demand period and sliding window time can be set. Factory default value: demand period 15min, sliding time 1min. 4. When voltage circuit power-on, time interval conversion, clearance and clock adjustment etc occur, the energy meter starts to measure demand as per demand period from the current point on; when the first cycle is completed, start the maximum demand measurement according to sliding time. In an incomplete demand period, do not take max demand measurement. 5. Can store the maximum demand data of 12 settlement dates. Display 1. Energy meter display items: the main display data, auxiliary display code and character; 2. Display mode is divided into automatic and button two ways, and the display items maybe set as requirements. When pressing button to display, LCD activate backlight mode. The cycle display period can be set from 5 to 20 seconds, and the default value is 5 seconds; 3. Energy meter display Mode: a) with automatic cycle display, pressing button display and self-test display modes, of which display content can be set b) The display of measurement value is no less than eight digits; the display decimal can be set 0-4 digits; The display adopts national legal units of measurement, such as: kW, kvar, kWh, kvarh, V,A, etc.; only display effective bit. c) at least display the accumulative energy consumption value, the total accumulative energy consumption value , the maximum demand, active energy direction, date, time, time interval, the accumulative energy consumption of this month and last month, necessary information of charge-controlled energy meter and meter address etc.. The display data is clear and legible. d) Display self-test alarm code; alarm code set in the first display; alarm code includes the following incidents: 1) Clock battery voltage is insufficient; 2) the direction of active energy changes. e) Display self-test error code. Error fault once happens, the display will immediately stop at the code, and the button can change the current display code. Failure error code includes the following incidents: 1) Internal program error; 2) clock error; 3) memory failure or damage. f) When needed, the preset parameters of the energy meter can be displayed. g) Can choose to display the freezing amount, records or events etc. h) with function of display activation after power failure. 4. with function of abnormal condition reminding. When the energy meter run abnormal (voltage failure, current serious imbalance, phase loss, reverse phase sequence, etc.), the display stays in the code, and light alarm simultaneously. Failure error code includes the following items: Internal program error, clock error, memory failure or damage. Clock, time interval and rate function 1. Adopts built-in hardware clock circuit with temperature compensation, with calendar, timing and leap year automatically switch function. The output frequency of the internal clock terminal is 1Hz. 2. With two sets time intervals of rate, the automatic switching of the two time periods can be achieved by pre-set. Each rate period can be set at least two time zones; At least 8 time intervals can be set in 24 hours; the minimum time interval is 15 minutes, and the time interval is longer than the set demand period, the time period interval can be set cross the hour of 00:00. Time Adjustment 1. When time adjusted through RS485, infrared and other communication interfaces, except broadcasting time adjustment it must be carried out under programming status 2. The broadcasting time adjustment not requires programming button and communication password matching, only allowing once a day. And the broadcasting time adjustment range cannot be more than 5 min. The adjustment should avoid being implemented before or after 5 minutes of energy meter freezing and billing data transfer; when the adjusted time is more than 5min, the energy meter time can only be adjusted on the site. Measuring and monitoring 1. Can measure, record and display the total and slip phase voltage of the current energy meter, current, power, power factor and other operating parameters. Measurement error (quoted error) does not exceed ± 1%. 2. To provide the monitoring capabilities out of limit; for the line (phase) voltage, current, power factor and other parameters, the meter can set their limits and monitoring, when a parameter above or below the set limit, to record by way of the event, the record format and the request complies with DL / T 645-2007 and its recorded file. Event log 1. can record the total times of programming, the latest 10 times programming, the operator code and programming data identification. 2. Can record the total times of demand clearance, the latest 10 times demand clearance time, the operator code. 3. Can record the total times of time adjustment (not including broadcasting time adjustment), the adjustment time of the latest 10 times and the operator code. 4. Can record the total times of phase voltage loss, the voltage failure occurrence time, end time and the corresponding energy data information of the recent 10 times. 5. Can record the total times of phase voltage loss; the off phase occurrence time, end time and the corresponding energy data information of the latest 10 times. 6. Can record the total times of each phase current loss; the current loss occurrence moment, end time and the corresponding energy data information of the latest 10 times. 7. It can record the current imbalance occurrence moment, end time and the corresponding energy data information of the latest 10 times.