• April 30, 2024

    What is DLMS/COSEM ?

    DLMS EVENT LOG

    DLMS stands for Device Language Message Specification,
    a generalised concept for abstract modelling of communication entities

  • April 30, 2024

    Calculation methods for energy

    r Electricity Meter

    We've got several questions related to the different recording methods for electrical energy meters. Here is the behaviour with different settings…

  • November 2, 2023

    General information for wiring diagrams

    din 1

    CLOU follows the DIN EN 81346-2 for marking and identification of components inside of automated test equipment.

  • April 4, 2024

    Environmental Conditions For Meter Test

    constante del medidor

    Laboratory meter test equipment should operate under defined climatic conditions.

  • May 1, 2024

    Acceptance tests for energy meters

    r CL710K20

    From time to time there are some questions regarding the acceptance inspection (FAT) for energy meters. This paper is to clarify the legal and metrological matters.

  • May 1, 2024

    The difference between adjustment and calibration

    CL2052

    Calibration means the comparison of a unit under test with test equipment with higher accuracy.

  • March 20, 2024

    Pulse Calculation for Stationary Test Benches

    CL3000

    All energy meters used for billing purpose have a test output for calibration. This can be flashing diode, a pulse output at the terminal or the mark of a rotating disk. This test output gives us information about the power consumption.

  • May 2, 2024

    Terminal wiring for electrical energy meters

    terminal quick connector for Chinese singlephase meter

    In meter- or test bench descriptions you can find various expressions, all with the same meaning.

  • March 1, 2024

    How long does a no-load test take?

    CL3000

    When the voltage is applied with no current flowing in the current circuit, the test output of the meter shall not produce more than one pulse.

  • April 28, 2024

    The different current subscripts

    prueba del medidor

    Together with tender documents and meter specifications you will find various subscripts related to current. Now let's look more in detail: Starting current Ist according to IECThe starting current is a fraction of the basic current or nominal current. See the multiplication factors below: IEC 62053-11 direct connected class 1: 0.004 Ibclass 2: 0.005 Ib …

  • November 20, 2023

    When do I need Isolation Current Transformers?

    ICT CL2030 D 300x253 1

    Isolation Current Transformers (ICT) are needed to test more than one direct connected energy meter on a test bench with multiple positions, assuming that the I-P links can not be opened.

  • April 16, 2024

    The Standard Transfer Specification STS

    sts association logo

    The Standard Transfer Specification (STS) has become recognised as the only globally accepted open standard for prepayment systems, ensuring inter-operability between system components from different manufacturers of prepayment systems.