USER MANUALDSSD331/DTSD341-9DTHREE PHASE ELECTRONIC MULTIFUNCTION ENERGY METERContent1.Overview ......................................................................................................................................................................1.1.Standard.......................................................................................................................................................................1.2.Working Theory ............................................................................................................................................................plate Description..................................................................................................................................................1.4.Technical Parameter .....................................................................................................................................................Basic Technical Parameter ..................................................................................................................................................Calendar Clock ...................................................................................................................................................................Power Impulse....................................................................................................................................................................Other Parameter .................................................................................................................................................................2.Glossary .......................................................................................................................................................................................................2.1.Demand interval............................................................................................................................................................2.2.Maximum demand ........................................................................................................................................................2.3.Sliding window time ......................................................................................................................................................2.4.Peak on, Peak, Peak off, Valley, Low Valley, Lowest Valley time zone.............................................................................2.5.Harmonic voltage(voltage Distortion) .............................................................................................................................2.6.Harmonic current(current Distortion)..............................................................................................................................2.7.Total Voltage Harmonic Distortion(THD U) .......................................................................................................................2.8.Total Current harmonic Distortion（THD i） ....................................................................................................................3.Function Introduction ................................................................................................................................................................................3.1.TOU energy measurement (six tariffs, 4 quadrants)........................................................................................................3.2.Measure current, voltage, frequency and power.............................................................................................................3.3.Calculate M.D...............................................................................................................................................................3.4.Harmonic analyze .........................................................................................................................................................3.5.The record of 12 months account data...........................................................................................................................3.6.The record of load curve ...............................................................................................................................................3.7.Main and Subsidiary Tariff Setting..................................................................................................................................3.8.The record of event.......................................................................................................................................................Loss Phase.........................................................................................................................................................................No load...............................................................................................................................................................................Loss current........................................................................................................................................................................Exceed Voltage limit............................................................................................................................................................Unbalance voltage ..............................................................................................................................................................Reverse..............................................................................................................................................................................Exceed demand..................................................................................................................................................................Power on ............................................................................................................................................................................Reset..................................................................................................................................................................................Three Phase Failure Record................................................................................................................................................Current Reverse Indicator....................................................................................................................................................The record of electronic energy quality.................................................................................................................................The unbalance rate of current..............................................................................................................................................The event of high-neutrality current......................................................................................................................................The exceed limit of current ..................................................................................................................................................Open cover events..............................................................................................................................................................3.9.Freezing Energy ...........................................................................................................................................................3.10.I mpulse output and accuracy check...............................................................................................................................3.11.Other signal output........................................................................................................................................................3.12.D ouble RS-485 communication and optical communication............................................................................................3.13.R eading meter when PT shut down ...............................................................................................................................3.14.B attery..........................................................................................................................................................................4.LCD Description .........................................................................................................................................................................................4.1.LCD display face...........................................................................................................................................................4.2.Description of main display screen. ...............................................................................................................................4.3.Dendrite menu (refers to appendix 1).............................................................................................................................4.4.Description of menu, display screen and the mark..........................................................................................................Main menu..........................................................................................................................................................................Submenu of real time data...................................................................................................................................................Submenu of real time data...................................................................................................................................................Submenu of meter status word ............................................................................................................................................Submenu of history data......................................................................................................................................................Submenu of three phase total energy...................................................................................................................................4.4.8. Submenu of query parameter.......................................................................................................................................Other menu.........................................................................................................................................................................4.5.Alarm information definition...........................................................................................................................................5.Installation and connection ........................................................................................................................................................................5.1.installation dimension and usage...................................................................................................................................5.2.main terminal connect...................................................................................................................................................5.3.Auxiliary terminal connect .............................................................................................................................................6.1.The operation of button (key).........................................................................................................................................6.2.RUN, EVENT and power impulse output........................................................................................................................6.3.parameter setting, clear zero, M.D resetting...................................................................................................................6.4.Change battery.............................................................................................................................................................6.5.leading sealing..............................................................................................................................................................7.Notice ...........................................................................................................................................................................................................7.1.Notice in using time.......................................................................................................................................................7.2.Transportation and Storage ...........................................................................................................................................7.3.Guarantee ....................................................................................................................................................................8.Maintance ....................................................................................................................................................................................................8.1.Free of charge ..............................................................................................................................................................8.2.Free of Duty, on this condition, the service may take cost............................................................................................... Appendix 1: DSSD331/DTSD341-9D meter structure............................................................................................................. Remark: if you know more about display content, you can see 4. LCD display user manual. ................................................... Appendix 2: The manual of display code(Display ID code)...................................................................................................... Remark: if you know more about display content, you can see 4. LCD display user manual. ...................................................1. Overview1.1. StandardDL/T 614-1997 《Multifunction Energy Meter 》GB/T 17883-1999 《Class 0.2S and 0.5S Static AC Active Energy Meter 》GB/T 17882-1999 《Class 2 and 3 Static AC Reactive Energy meter 》DL/T 645-1997 《Multifunction Energy Communication Protocol 》GB/T 15543-1995 《Power Quality Unblance Rate of Three Phase Voltage 》1.2. Working TheoryDSSD331/DTSD341-9D type 0.2s class energy meter use slap-up meter design project: DSP+ management MCU, include DSP and MCU. The working theory is as follow: the 16 bits A/D converter and DSP sample the current and voltage and making relative calculation. The DSP finish the parameter measurement, energy consumption, and harmonic analysis, harmonic energy calculation. All the calculation will be send to MCU through the high speed communication channel, and the MCU will manage the display, data analysis, storage, communication, other function and parameter, the working theory is show in diagram 1.Diagram 1 DSSD331/DTSD341 –9D Working Theory1.3.Diagram 2 DSSD331/ DTSD341 –9 D Nameplate Descriptions1.4. Technical ParameterNote’*’: The built -in Battery is for power supply of built-in clock1.4.3. Power Impulse⏹Meter Constant⏹Impulse Parameter2.1. Demand intervalBe measured time interval that is consecutive-equal for average power.2.2. Maximum demandMaximum value for demand in a special period2.3. Sliding window timeBe measured time interval for M.D by recurrence, the time interval is less than demand interval2.4. Peak on, Peak, Peak off, Valley, Low Valley, Lowest Valley time zonePeak on: The Period of Maximum Load in a dayPeak: The Period of High Loda in a dayPeak off: The Period of average load in a dayValley: The Period of Small Load in a dayLow Valley: The Period of Smaller Load in a dayLowest Valley: The period of Minimum Load in a day2.5. Harmonic voltage(voltage Distortion)U H: Harmonic Voltagen: Harmonic timesU h: the h times harmonic voltage2.6. Harmonic current(current Distortion)I H: Harmonic Currentn: Harmonic timesI h: the h times harmonic current2.7. Total Voltage Harmonic Distortion(THD U)U H: Harmonic voltageU1: Fundamental wave voltage2.8. Total Current harmonic Distortion（THD i）I H= Harmonic currentI1= Fundamental wave current3. Function Introduction3.1. TOU energy measurement (six tariffs, 4 quadrants)Measure total and the energy by 6 tariffs for import/export kWh, kvarh as well as the kvarh of 4 quadrants, the defination of 4 quadrants is described in diagram 3.Diagram 3: Defination of 4 QuadrantsThere are two types of reactive measurement mode as following:1) Import Reactive= Ⅰ Quadrant + Ⅱ QuadrantExport Reactive= Ⅲ Quadrant + Ⅳ Quadrant2) Import Reactive= Ⅰ Quadrant + ⅣQuadrantExport Reactive= Ⅲ Quadrant + Ⅱ QuadrantThese two types of measurement mode can be programed before usage.The accuracy calss for reactive measurement is 0.2S and calss 1.0 for reactive, the reactive accuracy is inspected by follow the standard 《Class 1 and 2 Static AC Active Energy Meter 》Year section (Maximum 14 times): The one year can be devided into several time section which can be applied with different schedule (Maximum 12 times) of day switch times (Maximum 14 times), the tariff for each day switch can be programmed but the maximum number is 6 tariffs. There are special time in a year which can be programmed like the weekend and holiday, customer may set special day switch schedule for these days. Current tariff can be displayed and reviewed on the left buttom of LCD.3.2. Measure current, voltage, frequency and powerMeter can measure voltage & current of each phase and each element, measure total and reach pahse & element kW, kvar, power factor and frequency. The voltage between the virtual center and line for a 3 phase 3 wire meter can be calculated. The distinguish ability for voltage 0.01V, for current is 0.001A, for kW and kvar is 0.0001, for frequency is0.001Hz. The power direction can be indicated by displying the symble “P”, “+”, “-”, “Q” and “1~4”.3.3. Calculate M.DMeter can measure total M.D. of import/export kW & kvar, 4 quadrant kvar with time, and the M.D. can be measured by each tariffs also. The demand interval is programable from 5, 10, 15, 30 and 60 minutes, sliding time is programable from 1, 2, 3 and 5 minutes.3.4. Harmonic analyzeDSP convert the voltage and current signal by FFT in 256 points, then the value, phase of 2~39 times harmonic voltage and current can be calculated out, the accuracy for harmonic value is 2% (for 2~21 times harmonic), the phase accuracy is +1~2 degree. All harmonic information can be displayed on LCD, and the harmonic data storage can be read out through communication port. There are 6 kinds of harmonic date will be stored like: n times harmonic voltage, orginal phase and the harmonic value, n times harmonic current, orginal phase and the harmonic value, total aberrance rate of harmonic voltage, total aberrance rate of harmonic current. The harmonic value can be display on LCD in histogram format.3.5. The record of 12 months account dataMeter can record total and TOU kWh, kvarh, M.D. and M.D time of current month and last 1th to 12th month. The billing time is clock 00:00 from the frist day for each month, and this billing date can be programmed.3.6. The record of load curveThe record mode of load curve can be set through any communication port on meter, there are 8 kinds of data can be record, user may use this date to draw curve for analyse.Definition of 8 kinds of load curveThe memory size of load curve data storage is 4M bytes. The minimum record interval for these data is 1 minute. The data items to be record and the interval are programmable. Meter will start to record each data according to the setting from the pre-set ‘start time’Calculate formula: T =)(LM-∑=91)/(iTiLiT = the record of curve of load time lengthM = FLASH memory (-9D meter memory is 4M)L= Index table length (-9D meter memory is 16.5bytes)Li= Total bytes of the i class dataTi= the setting time interval of i class data3.7. Main and Subsidiary Tariff SettingThere are two tariff settings can be programmed in the meter, current active tariff is main tariff and the subsidiary tariff is backup tariff. The switch time for these two settings can be programmed. And there are different symbles on LCD to indicate the main and subsidiary tariff, ①for main and ②for subsidiary. When meter is running under season tariff, the two symbols will not displayed.3.8. The record of event3.8.1. OutageMeter can record last 10 times of outage time, starting time, times and accumulative total outage time.3.8.2. Loss PhaseWhen the power is on at 3 phases 4 wires mode, if the voltage of 1 phase is lower than ug and the casting time is longer than tu, and the current of the phase is lower than 0.5%IB±0.05%IB,the phase is Power down; When the voltage of Loss-phase goes higher to ug and casting longer than td, the phase resumes. In 3P3W mode, if the total voltage of element A & C lower than 1.2 times of Un, B phase lose phase. If the voltage of element A&C ua－uc|≥u0, and casting longer than tu, and the current of the element lower than 0.5%Ib±0.05%Ib, A phase lose phase. When |ua－uc| is lower than u0, and the casting time longer than td, the phase resume. When loss phase is taking place, happening time, loss phase times and total time will be recorded. Event light will be turned on automatically. After loss phase, ending time will be recorded and alarm will be cancelled.ug: Limited Value for loss phase, can be set up(25V~Un，Un=57V or 100V), default 30V.tu: Loss phase casting time, can be set up(1 min~99 min), default 1 minute.td: Loss phase resume casting time, can be set up(1 min~99 min),default 1 minute.3.8.3. Loss voltageIf the voltage of a loss voltage is lower than 78％Un±2V, the current is higher than 0.5%Ib+0.05%Ib, and cast longer than te, this phase loss voltage. Loss voltage start/end time, meantime power and total time will be recorded, event light turn on. But, when 3P3W, if voltage of element A&C is lower than Uw, it is not loss voltage.When voltage of the phase resumes to 85%Un±2V, and cast longer than tf，timing stops, Loss voltage stops. The meter will record the ending time, meantime power and cancel the alarm.The meter has the function to record all loss voltage events from first time to 10th time, loss voltage times and total times.Besides, the meter recorded the active energy of import/export, metering from the communication port.Un：Limited value for loss voltage, can be set up(20V~Un，Un=57V or 100V)，default 57V;Uw：the up limit of voltage failure in three phase three wire system can be set to 20V~Un，Un=57V or 100V, the default setting is 57V；te Loss voltage casting time, can be set up(1 min~99 min),default 1 minute;tf Loss voltage resuming time, can be set up( 1 min~99 min), default 1 minute.3.8.4. No loadIn 3P3W mode, when each current is lower than I0，either the voltage of A or C is lower than I0，it is unload. The Event light turn on, meter records start/end time and total time.I0: Limited value for unload, can be set up(20mA~99mA)，default 30mA.3.8.5. Loss currentWhen loading, if the current of a phase Is lower than Ig，and lower than 1/Riof the average of the voltage for another 2 phases, and cast longer than ti, 1 current of the phases is higher than Ik, this phase lost. When the current of the disconnected phase is higher than Ig，and higher than 1/Riof the average of the voltage for another 2 phases and cast longer than tj, this lost current resumed.When disconnected, the meter record the happening time and meantime power, turn on the event light. When resuming, it record the resuming time and meantime power, and cancel alarm. Beside this, the meter record import/export active energy measurement when disconnecting, metering by the communication port.The meter has function to record disconnected current times and total time.Ig: Limited value for disconnected current No 1, can be set up(20mA~99mA)，default 60mA;Ik: Limited value for disconnected current No 2, can be set up(20mA~99mA)，default 60mA;Ri：the phase current scale factor can be set to 2~50，the default setting is 8；T(i): Casting time when disconnecting current, can be set up(1 min~99 min), default 1 minute.T(j): Casting time when disconnecting current resuming, can be set up(1 min~99 min), default 1 minute.3.8.6. Exceed Voltage limitWhen any voltage of phase is higher than 125%Uh, and casting time≥t(over), this phase exceed limit; When the volt age is 120%Uh or less, and the casting time ≥t(over), exceed limit stops. And it record the start/end time(Month, day, hour and minute) from the first time to 10th and the meantime voltage.Uh: Distinguishing limited value for exceed limit, can be set up (20V~Un, Un=57V or 100V), default 57V;T(over):Casting time when exceed limit, can be set up (1 min~99 min), default 1 minute.3.8.7. Unbalance voltageWhen the voltage of the three phases are unbalanced, and the unbalance rate is bigger than the preset limit, meter will record the unbalance events. When the unbalance rate is lower than the preset limit, the event recording stopped. Meter3.8.8. ReverseThe meter will record start/end time (month, day, hour and minute) of reverse from 1st time to 10th and meantime active power. The symbol ‘Alarm’ will be displayed when this event happened.3.8.9. Exceed demandWhen the average demand of demand cycle ≥ the up limited of demand (can be set up, default 1000W), it is exceed demand. The meter record the demand, exceed demand time, and turn on alarm light; when the maximum demand less than the up limited, exceed demand stops, and the time will be record. Meter can record last ten times events.3.8.10. ProgrammingMeter will record each programming time from 1st time to 10th and the programming mark.3.8.10.1. Power onMeter will record each power on time from 1st time to 10th (month, day, hour and minute).3.8.10.2. ResetMeter will record each reset time from 1st time to 10th (month, day, hour and minute).3.8.10.3. Clear demandMeter will record each clear demand time from 1st time to 10th (month, day, hour and minute), and maximum demand before clear demand.3.8.10.4. Clear zeroMeter will record each clear zero time from 1st time to 10th (month, day, hour and minute), and the active energy before clear zero.3.8.10.5. Calibrate dateMeter will record each time of calibrate date from 1st time to 10th (month, day, hour and minute), and time before calibrate date(month, day, hour and minute).3.8.10.6. Voltage Qualification RateThe up and lower voltage limit is programmable to check the voltage quality, meter will measure the average voltage of every minute than compare with the limit value. The total running time of phase A/B/C when the voltage is in the checking range or exceed the up limit or lower than the lower limit will be record.The up & lower limit of voltage checking range is programmable; the default setting is 0V;The up & lower limit of voltage qualified range is programmable; the default setting is 0V;3.8.10.7. xceed limit of voltage DistortionWhen the total harmonic voltage/current is large than the up limit (programmable, the default voltage setting is 10V and the current is 6A) the aberration event is happened, and meter will record this event with time; when it voltage/current come back and lower than the limit, the event finished, and meter will record the event with time.The last ten time events will be record.3.8.10.8. Three Phase Failure RecordWhen the three phase voltage failed, meter will record this events, the start and end time and current total energy value, meter will make alarm by LED lighting. The voltage failure event for each phase will not record at this moment.3.8.10.9. Current Reverse IndicatorFor three phase four wire connection, when any one phase current reversed, the relative symbol (Ia, Ib, Ic) for each phase with ‘-’ will be diplayed on LCD3.8.11. The record of electronic energy quality3.8.11.1. The unbalance rate of currentWhen the current of the three phases are unbalanced, and the unbalance rate is bigger than the preset limit, meter will record the unbalance events. When the unbalance rate is lower than the preset limit, the event recording stopped. Meter(3P4W)(3P4W)。
