Digital Grid Digital Grid


Overcurrent Protection Device as Line Protection Backup


SIPROTEC 5 base module with large display

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    The SIPROTEC 7SJ86 overcurrent protection device has specifically been designed as backup or emergency protection for the line protection devices. With its modular structure, flexibility and the powerful DIGSI 5 engineering tool, the SIPROTEC 7SJ86 device offers future-oriented system solutions with high investment security and low operating costs.

    Main function:

    Overcurrent protection (V/inverse-time-overcurrent protection)



    Inputs and outputs:

    3 predefined standard variants with 4/4 current transformers/voltage transformers, 11 to 23 binary inputs, 9 to 25 binary Outputs

    Hardware flexibility:

    Flexibly adjustable and expandable I/O quantity structure within the scope of the SIPROTEC 5 modular System

    Housing width:

    1/3 × 19 inch to 2/1 × 19 Inch

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