Two Winding Differential Protection Relay


Two Winding Differential Protection Relay

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    The transformer differential protection SIPROTEC 7UT85 is a universal protection, control and automation device on the basis of the SIPROTEC 5 system. It is especially designed for the protection two winding transformers. It is the main protection for the transformer and contains many other protection and monitoring functions. The additional protection functions can also be used as backup protection for protected downstream objects (e.g. cables, line). The modular expansion capabilities of the hardware support you here. The device supports all SIPROTEC 5 system characteristics. It enables future-oriented system solutions with high investment security and low operating costs.

    Main function:

    1 Differential protection
    (standard- or autotransformer)
    with add-on stabilizations;
    Up to 2 differential ground-fault protection

    Useable measuring point:

    5 three-pole current measuring Points,
    3 one-pole current measuring points,
    3 three-pole voltage measuring Points,
    2 one-pole voltage measuring points expandable to 3 sides

    Inputs and outputs:

    2 predefined standard variants with
    8 current transformers,
    7 to 19 binary inputs,
    7 to 23 binary outputs

    Hardware flexibility:

    Flexible adaptable and expandable I/O quantity structure within the scope of the modular SIPROTEC 5-building blocks

    Width of housing:

    1/3 x 19'' to 2/1 x 19''

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