• December 19, 2023

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    Where is the Basic Current?

    meter current range

    In the last 100 years we had a lovely Ib for direct connected meters. Now the name has changed to nominal current In.

  • November 18, 2023

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    The Initial Start-Up for Energy Meters

    initial start up time for meters with closed relays

    Electronic energy meters are like small computers. The need some time for starting up.

  • March 30, 2024

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    Influence of Fast Load Current Variations

    Fast Load Current Variations Test Profile 1

    The load current can vary frequently with high amplitude. The test conditions in the older versions of the IEC62052-11 have all be static…

  • November 19, 2023

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    Repeatability Test for Energy Meters

    CL710K11B

    Another new test introduced by the IEC62052-11 Edition 2 is the repeatability test.

  • October 25, 2023

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    Influence of Self Heating

    r DTS718 1

    We need to figure out whether the occurring internal heat is causing a temporary error drift above the allowed limits for variation.

  • January 4, 2024

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    No Load Test for Energy Meters 2020

    CL3000

    With publishing of the Edition 2 of IEC62052-11 the minimum run time calculation formula has changed.

  • November 21, 2023

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    Odd Harmonics in the Current Circuit

    phase fired waveform 45°

    Two more tests for odd harmonics have been added to IEC 62052-11 edition 2.

  • November 21, 2023

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    Which Meter Constant should a Meter have?

    constante del medidor

    Higher constant means faster testing. The most time-savings are coming from the no-load test and the starting test.

  • February 12, 2024

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    The Energy Meter Register Resolution

    r CL710K16 SHORT 1

    The main purpose of an electronic energy meter is the accurate metering of the customer consumption. The meter has registers for storing the various consumption values

  • November 22, 2023

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    Short Interruption and Dip Tests IEC62052-11

    IEC62052 11 Edition 2 voltage dip test 7

    These tests are performed to make sure the meter is resistant to dips and short interruptions that frequently happen on the mains power supply.

  • October 24, 2023

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    The Energy Meter Tamper Event Log

    electromechanical meter in the field

    This segment of the event logs is capturing all possible meter manipulations and abnormal environmental conditions.

  • October 25, 2023

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    The Energy Meter Standard Event Log

    DLMS EVENT LOG

    All extraordinary things happen inside or close to an electronic meter are called "events". An event has at least one time record (date & time of occurrence). Some events can also have an end-time stamp.