Overview

The GE Multilin T35E00HCH Transformer Protection Relay is engineered for comprehensive protection of power transformers, including autotransformers and generator step-up units. It supports up to six sets of current transformers (CTs), enabling flexible protection schemes for complex transformer configurations.

Moreover, the T35E00HCH provides fast and secure differential protection, along with phase and ground overcurrent protection. It features a 7-inch full-color graphical HMI for intuitive local monitoring and control. In addition to its protection capabilities, the relay includes advanced automation, diagnostics, and cybersecurity features, making it ideal for modern utility and industrial power systems.

With support for IEC 61850 Editions 1 and 2, Modbus, DNP3, and Routable GOOSE (R-GOOSE), the T35E00HCH ensures seamless integration into digital substations and SCADA environments. Therefore, it is a trusted solution for engineers seeking reliable, scalable, and secure transformer protection.

Technical Data

Typical Applications

• Two- and Three-Winding Transformer Protection: Provides fast differential protection for complex transformer configurations.

• Autotransformer and GSU Protection: Ideal for generator step-up units in power plants.

• Digital Substations: Integrates with IEC 61850-based systems for real-time control and monitoring.

• Utility and Industrial Power Systems: Used in substations, refineries, and large manufacturing facilities.

• Critical Infrastructure: Supports cybersecurity compliance for NERC CIP and other standards.

For instance, in a utility substation, the T35E00HCH can isolate transformer faults within milliseconds, preventing cascading failures and equipment damage. In addition, its built-in logic and event recording help operators analyze incidents and improve system reliability.

FAQ

Q1: What makes the T35E00HCH suitable for three-winding transformers?
A1: It supports up to six CT inputs, allowing flexible differential protection for multi-winding configurations.

Q2: Does the relay support modern communication protocols?
A2: Yes, it supports IEC 61850 Editions 1 and 2, Modbus, DNP3, and Routable GOOSE.

Q3: How is cybersecurity handled?
A3: It includes the CyberSentry™ suite, compliant with NERC CIP and IEEE 1686 standards.

Q4: Can the relay be used in harsh environments?
A4: Yes, it operates reliably from –40°C to +70°C and is built for industrial-grade conditions.

Q5: What industries commonly use this relay?
A5: Power utilities, oil & gas, heavy industry, and renewable energy sectors.