INFORMATION: Product.pdf - Iskraemeco

Energy Measurement and ManagementMD400...MT400...Multiratethree-phase meters

MD400..., MT400...The MD400 and MT400 electronic three-phase meters are designed for metering active energy in one or two-energy flowdirections in three-phase 3- and 4-wire networks respectively at households and commercial consumers, and registeringenergy in maximum four tariffs. The meters comply with the IEC 61036 standard and are manufactured by the ISO 9001standard.Metering systemThe MD400 and MT400 meters areprovided with 2 and 3 metering elementsrespectively. The meteringelement is based on IskraemecoSPS (Smart Power Sensor) technology.A Hall-effect sensor, analogueand digital circuitry are integrated ina single silicon crystal. The meteringelements are shielded against externalmagnetic fields, and are protectedagainst over-voltages and highfrequency disturbances. Suchdesign of the metering elementassures excellent and long-term stablemetering features, negligibleeffect of influence quantities andhigh meter reliability. Therefore, themeters do not require any calibrationover their entire life span.Measured quantitiesThe following quantities are measuredand registered: imported andexported active energy in up to 4rates as well as total imported andexported active energy. In case ofbi-directional meter version, importedand exported energy is registeredeither in separate registers or in oneregister.Meter versionsMeters can be provided with aninternal clock or not. A built-in clockcomplies with the IEC 61038 standardrequirements and enables timesetting of tariff change-over to theminute. It complies with the year2000 requirements. A super-capacitoror, on request, a Li-battery canbe used as a back-up power supply.The meters without an internal clockare provided with two auxiliary terminalsto control the tariff changeoverwith network voltage.HousingAn ergonomically designed housingis made of self-extinguishing polycarbonatewhich can be recycled. Itassures double insulation and IP51protection level against dust andwater penetration. A meter cover ismade of a transparent polycarbonate,and is fixed with two sealingscrews. A meter base and a terminalblock are injection moulded in onepiece. Connection terminals aremade of brass. A terminal cover canbe short or long type, and is fixedwith two sealing screws.The meter and fixing dimensionscomply with the DIN 43857 standard.DisplayLCD complies with VDEW requirements.Measurement data are displayedwith eight 7-segment 9 mmhigh numbers. Displayed data areidentified with a five-digit EDIS code(DIN 43863-3). 7-segment numbersare 7 mm high. Symbols on the displayindicate energy flow direction, avalid tariff, energy unit as well asmeter status. All measurement datacan be cyclically displayed.MicrocomputerA microcomputer controls the LCD,enables programming and meterreadout via an optical interface andan CS–interface (if built-in). It storesmeasurement data in a non-volatilememory (EEPROM), monitors phasevoltages and logs events (power supplyfailures, errors at data storage,etc.) into corresponding registers.The microcomputer functioning issupervised by a watchdog circuitry.Communication interfaceAn optical interface complies withthe IEC 61107 standard; the communicationprotocol is Mode C. Themeters can be provided with a CSinterface(a 20 mA current loop incompliance with DIN 66348) forremote meter readout. Up to fourmeters can be connected into onecurrent loop.LED and push-buttonsThe meter is calibrated and its accuracyis checked via a LED on themeter front side. The meter is providedwith three push-buttons, twoof which are accessible from themeter front side. A black push-buttonenables a cyclical display ofmeasurement data while a red oneenables meter setting to the meterprogramming operation mode. Thered push-button is sealed.OutputsThe meter can be equipped with twoS0 (DIN 43864) or opto-MOS relayoutputs, one for each energy flowdirection. A relay output is providedwith a make voltage-free contact.Output impulses can be transmittedup to 0.5 m in case of an S0 outputor up to 1 km in case of an opto-MOS-relay output.AccessoriesLZV or SKView software, and anoptical probe with a 9-pole connectorare available for meter readout.

MD400..., MT400...TECHNICAL DATAAccuracy class (IEC 61036) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 or 1Basic current Ib . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 A or 10 AMax. current Imax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85 A or 120 AMin. current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.05 IbStarting current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.005 IbReference voltage Ur . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3x230 V or 3x230/400 V (other voltages on request)Voltage range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.8 Ur ... 1.15 UrReference frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50 Hz or 60 HzOperating temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .–25°C ... +60°CStorage temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .–40°C ... +80°CInternal clock (option) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .IEC 61038RTC operation reservesuper capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 daysLi battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 yearsOptical interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .IEC 61107Current circuit burden . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

MD400..., MT400...METER TYPE DESIGNATIONM T 400-D1A52-V22G22-M1K01M – electronic meterD – three-phase two-element meterT – three-phase three-element meter400 – multirate meter in housing (DIN 43857)D1 – DIN terminal block for direct connection up to 85 AD2 – DIN terminal block for direct connection up to 120 AA – active energy5 – class 24 – class 11 – one energy flow direction2 – two energy flow directionsV – tariff control input (option)n – number of tariff inputs (n = 1, 2)2 – control voltage is phase voltageG22– two S0-outputsL21 –two opto-MOS-relay outputs, make contactM – internal clock (option)1 – 1- back-up power supply: super-capacitor2 – 2- back-up power supply: Li-batteryK – communication interface0 – optical interface (IEC 61107)1 – CS-interface (20 mA current loop by DIN 66348; option)Owing to periodical improvements of our products the supplied products can differ insome details from the data stated in the prospectus material.722.99.150 9910/53Iskraemeco, Energy Measurement and Management4000 Kranj, Savska loka 4, SloveniaTelephone: (+386 64) 26 40, Telefax: (+386 64) 26 43 76, http://www.iskraemeco.siPublished by Iskraemeco. Data subject to alteration without notice.