Freescale Semiconductor Reference Design Data Sheet MCF51EM256220RDDS Rev. 0, 10/2009 MCF51EM256-based Poly Phase Energy Meter Reference Design 220V Technical Specifications Electrical Connection type Direct connected (Whole current) Wiring configuration 3 phase 4 wire & 1 phase 2 wire Voltage rating 230V +/-10% (L-N) Current range 10-60 A Accuracy Class 0.5 Frequency range 47Hz to 53Hz Pulse constant 800 impulses/kWh & 800 impulses/kVArh Standard compliance IEC 62053-11, IEC 62053-22, IEC 62053-23 & IEC62056-21 Mechanical Dimensions (WxHxD) 168 x 242 x 84 mm Weight 1.675 kg Enclosure Plastic (PC/ABS blends) Sealing Sealing screws provision © Freescale Semiconductor, Inc., 2009. All rights reserved. Environmental Compliance IEC 60529 Ingress protection IP 51 (Indoor type meter) Operating Temperature -25˚C to +55˚C Storage Temperature -25˚C to +70˚C Humidity 95% Features Measurement parameters Voltage, Current, Frequency kWh, kVArh, kW, kVAr, Power factor Tamper Recording Missing potential and current, current and voltage unbalance, cover open tamper detection. LED indication for tamper Load profile Load profile interval period: 5, 10, 15, 30, 60 minutes and 1 day. Maximum demand Programmable MD interval period of 30 minutes and 60 minutes MD can be reset by using Reset key Display Custom built metering specific LCD with backlight. Eight digits 7 segment display for parameters with symbol identifiers. Auto scroll Manual scroll using UP and DOWN keys Communication Optical port as per standard IEC 62056-22 RS 232 port and BDM port for programming Data security Data storage in non-volatile memory; two levels of password for programming configuration and for auto calibration Output device LED pulses proportional to kWh, kVArh LED for Power on indication MCF51EM256-based Poly Phase Energy Meter Reference Design 220V Technical Specification, Rev. 0 2 Freescale Semiconductor How to Reach Us: Home Page: www.freescale.com Web Support: http://www.freescale.com/support USA/Europe or Locations Not Listed: Freescale Semiconductor, Inc. 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