Transformer differential protection

SIPROTEC V virtualizes substation protection & control, scaling up to 60 IEDs on one server with proven algorithms, IEC 61850 compliance, and AI-ready architecture.

SIPROTEC 7UT82 delivers reliable, low-cost differential protection for two-winding transformers. This compact device ensures safety with powerful, versatile functions and high availability via conformal coating.

The SIPROTEC 7UT85 is a modular differential protection device for two-winding transformers, offering versatile functions and flexible hardware expandability.

The modular SIPROTEC 7UT86 provides main transformer differential protection, specifically designed for three-winding transformers (3 sides).

Protect complex multi-winding transformers with the SIPROTEC 7UT87. This modular differential protection relay is designed for transformers with up to 5 sides and nu

The SIPROTEC 7SX85 is a modular universal protection device. Get precisely tailored functionality for any application and pay only for what you apply.

The Reyrolle 7SR54 relay provides protection, control, and monitoring for 2 and 3 winding transformers, supporting all vector groups and earthing connections.

The Reyrolle 7SR242 provides protection, control, and monitoring for two-winding transformers of all vector groups, primary configurations, and earthing connections.