• January 1, 2024

    Posted on

    Selection of Voltage Transformers

    r CL730D22L

    Voltage instrument transformers (VT, sometimes also abbreviated with PT) are used on the primary side of medium- and high voltage distribution transformers.

  • November 7, 2023

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    Selection of Current Instrument Transformers

    CL730S23 TWO BUTTONS

    Transformer operated energy meters need instrument transformers to reduce high voltage- and current values to lower quantities for measurement purpose.

  • February 26, 2024

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    Cross-sections for electricity wiring

    cat5 cable cradle wiring

    Each conductor wire has a resistance. Resistance means heat development inside the wire. Technically it's a loss.

  • January 1, 2024

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    Electrical Power Supply Systems

    CLOU meter box installation 2

    Usually the power supply systems are named with single phase, three-phase three wire or three-phase four-wire. The German VDE and the IEC60364-1 have unified the supply systems based on grounding.