• March 20, 2024

    Maximum Current for Energy Meters

    terminal quick connector for Chinese singlephase meter

    Energy meters have certain characteristics, including maximum current. It is the basis for all types of meter tests.

  • September 21, 2023

    The TID Clock is ticking

    r CL730S1

    If you are using STS prepayment energy meters you might remember that updates are required for the key management centre (KMC), the security modules and the vending software.

  • October 28, 2023

    Markings on the Case of Energy Meters

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    The IEC 62052-11 Edition 2 has introduced some changes for the meter marking and documentation. Today we cover the mandatory content of the nameplate for IEC meters.

  • March 14, 2024

    Pairing of a User Interface Unit with a Meter

    UIU 300x200 1

    A user interface unit (UIU) is a remote access terminal for STS prepayment meters. The device is placed inside the users premisses while the energy meter is mounted outside and mostly not direct accessible.

  • October 29, 2023

    Swapping Phase and Neutral

    meter box CL758WK

    Will an electronic energy meter measure accurate when I invert phase and neutral during installation? This question came up recently.

  • January 3, 2024

    Ring Wave Immunity Test

    ring waveform IEC 61000 4 12

    The IEC 62052-11 Ed.2 comes with a lot of changes for meter type testing. Another new introduced test for electromagnetic compatibility (EMC) is the ring wave immunity test.

  • June 21, 2021

    The Uttar Pradesh Smart Meter Shutdown

    Taj Mahal Uttar Pradesh

    A sudden shutdown of 150,000 smart meters happened recently in the Uttar Pradesh province, India.

  • January 2, 2024

    Electrostatic Discharge Test for Energy Meters

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    Sometimes it happens that you touch the door knob and you get an electrical shock. It's not dramatically for your body but an unpleasant feeling.

  • October 27, 2023

    Don't touch anything!

    CLOUGLOBAL SMT lines

    In your utility laboratory and for your on-site workers you take of course care for a proper training on the job and especially for personal safety.

  • October 27, 2023

    The Stability of IEC Standards

    IEC Standard symbol picture

    Meter manufacturers, utility laboratories and type testing institutes have planning security until year 2025.

  • February 26, 2024

    The Critical Change Value

    Aristo Trilog slide rule

    The critical change value indicates the maximum amount of change allowed in the meter's energy registers during disturbance tests without any current flowing in the meter's current circuits.

  • October 26, 2023

    The Optical Test Output and Pulses

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    Each electronic energy meter must have at least one optical test output. Commonly its named with flashing pulse diode or similar.