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  • PIC18F2520 MCP3909 3-Phase Energy Meter Reference Design - Meter Test Results and Adapting the Meter Design for other Requirements
    taken from a shipped OFFSET for I (0.5A, 220V, PF=1) - 2.5 seconds RMSenergy meter that was simply 're-calibrated' using the (Note 1, Note 2) Fluke electrical power standard and the calibration Note 1: Important! The approach to calibration software GUI that comes with the kit. No hardware used
  • AN1106, Power Factor Correction in Power Conversion Applications Using the dsPIC (R) DSC
    on the electric meter at the consumer'sTwo factors that provide a quantitative measure of the location. It performs the actual work such as creatingpower quality in an electrical system are Power Factor heat, light and motion. Working power is expressed in(PF) and Total Harmonic Distortion (THD). The amount
  • Overheating Electric Motors: One Root Cause of Insulation Failure
    electrical tool belt, the days of the handheld multi-meter and the meg-ohm meter as sole tools in cost effective maintenance is over. Modern on-line technologies permit easy assessment of the whole motor system, which is comprised of the power, motor and load. By focusing on the whole motor
  • Technical Article: Voltage Drop In a Facility
    It is expected and accepted (in the U.S.) that there will be a voltage drop of 3 to 5% from the point where the electric utility delivers power to the end user (usually at the meter) to the point within a facility where the electricity is finally consumed in an electrical device (the load). Unlike
    OPTO 22 and POWER Engineers Co-Develop Ethernet, DNP3-based RTU Alternative Opto 22 and POWER Engineers have co-developed , a low-cost remote telemetry unit (RTU) alternative for use with DNP3-based SCADA systems. The latest in Opto 22's SNAP Ethernet line of intelligent I/O systems and controllers
  • High-five to high-side current sensing
    through the meter. The technique was called high-side current sensing. However, high-side shunts require isolation in modern electronic control systems because of their direct connection to the high-side voltage rail. Current transformers perform this service in ac power systems. But the size and cost
  • Temperature sensors: Thermocouples
    thermocouples determine their qualities and are identified by a letter code. The four most common types are J, K, T, and E. One advantage thermo-couples have over other temperature sensors is that they need no electrical power to operate they generate their own. A thermocouple connected directly

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