The SIPROTEC 7UT87 is a modular transformer differential protection relay. We designed it for multi-winding transformers to support up to five sides and safeguard your critical assets.
Protect complex multi-winding transformers and systems with many measuring points like phase shifter, FACTS and converter transformers, arc furnace transformers and HVDC transformers. Our SIPROTEC 7UT87 provides comprehensive main and backup protection with flexible functions supported by DIGSI 5.
Enhance fault detection with up to three differential and five ground fault differential protection functions. Use up to 20 three-phase current and voltage measuring points for extensive monitoring. Its modular hardware allows flexible I/O expansion. Conformal coating supports high availability in tough environments.
Ensure safe, reliable automation and control for your systems. Improve operational stability, reduce risks, and build an efficient infrastructure with consistent performance.
Enjoy a simple, user-friendly interface for the device and software that reduces complexity and training time. Operate systems confidently with intuitive control for all functions.
Maintain high availability in tough conditions with conformal coating on electronic boards for continuous operation.
Apply up to three differential protection functions with stabilization across transformer groups. Use up to five ground fault differential protection functions for comprehensive coverage to protect your multi-winding transformers.
Use up to 20 three-phase current, 20 single-phase current, 20 three-phase voltage and 20 single-phase voltage measuring points. Acquire comprehensive data for detailed system analysis and precise protection.
Integrate up to four communication modules for various redundant protocols. Use virtual network sharing and PRP, HSR protocols for reliable data transmission.