(MT375) - Technical Description - Iskraemeco UK

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Mx37y ─ Single- and three-phase electronic meters with built-in DLCmodem, GSM/GPRS modem or RS485 comm. interfaceFor single phase meters BS terminal block (Imax =100 A) is possible too.2.3. Meter configuration (ME37y)2.2. Overall and fixing dimensions(ME37y)SDSDdetectioionSD - Switching deviceFig. 6: ME371 meter block diagramFig. 5a: Overall and fixing dimensions of a meter fitted witha long terminal coverSDSDdetectionGSM/GPRS MODEMorRs485 COMMUNICATION INTERFACESD - Switching deviceFig. 7: ME372 meter block diagram2.4. Metering system (ME37y)Fig. 5b: Overall and fixing dimensions of a meter fitted witha short terminal coverBesides precision measurement of active, reactive,apparent energy and demand in a wide metering andtemperature range, the metering system enablesmeasurement of phase voltages, currents and supplyquality.One metering element is built in the meter. Thecurrent sensor is shunt, while voltage sensor isresistive voltage divider. Signals of currents andvoltages are fed to the A/D converters, and then theyare digitally multiplied so that instantaneous power iscalculated. The instantaneous powers are integratedand summed in a microcontroller, as well as furtherprocessed.10Mx37y_Technical_Description_ENG_v2.00.doc
Mx37y ─ Single- and three-phase electronic meters with built-in DLCmodem, GSM/GPRS modem or RS485 comm. interface3. Meter appearance (MT37y)3.2. MT372…3.1. MT371…845212673431561010978Fig. 9: MT372 meter constituent partsFig. 8: MT371 meter constituent parts1. Meter base 6. Scroll push-button2. Meter cover3. Fixing screw of metercover7. Cover of Reset pushbutton8. LED4. LCD 9. Terminal cover5. Optical port10. Fixing screw ofterminal coverTwo screws for fixing the meter cover (item 3) aresealed with metrological seals.Two screws for fixing the terminal cover (item 10) andthe Reset push-button lid are sealed with seals ofelectric utility.1. LCD 8. A terminal cover2. Technical data 9. A project number3. Coupling circuit 10. A meter BAR code4. A legend of registersdisplayed on LCD5. Meter cover sealingscrews6. A meter serial number7. Terminal cover sealingscrews11. Impulse LEDs12. Meter technical data13. SCROLL and RESETpush-buttonsTwo screws for fixing the meter cover (item 5) aresealed with metrological seals.Two screws for fixing the terminal cover (item 7) andthe Reset push-button lid are sealed with seals ofelectric utility.3.3. Meter case (MT37y)A compact meter case consists of a meter base witha terminal block and fixing elements for mounting themeter, a meter cover and a terminal cover. The caseis made of self-extinguishing UV stabilizedpolycarbonate which can be recycled. The caseensures double insulation and IP54 (IEC 60529)protection level against dust and water penetration.The top hanger is provided on the back side of themeter base, under the top edge. On request, anextended metal top hanger can be mounted on themeter base, which ensures the upper fixing holeheight of 230 mm above the line connecting thebottom fixing holes (DIN 43857).Mx37y_Technical_Description_ENG_v2.00.doc 11
Page 1 and 2: Energy Measurement and ManagementME
Page 3 and 4: Mx37y ─ Single- and three-phase e
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(MT375) - Technical Description - Iskraemeco UK

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