Reyrolle 7SR54 Transformer differential protection

Why Reyrolle 7SR54?

The Reyrolle 7SR54 relay provides protection, control and monitoring for 2 and 3 winding transformers. It supports all transformer vector groups and earthing connections or comprehensive coverage for your electrical network.

Managing complex transformer operations requires multiple types of protection against faults and disturbances. The Reyrolle 7SR54 includes a wide variety of protection functions and advanced IEC 61850 Ethernet communications to help you maintain system stability and prevent costly downtime.

The user-friendly interface with a large LCD and tactile pushbuttons simplifies operation and maintenance. The withdrawable relay element allows for easy replacement for less service interruptions.

Key benefits

Protect your transformers

Deliver reliable protection for 2- and 3-winding transformers, auto-transformers, reactors and motors. Our proven algorithms safeguard your critical assets and electrical network.

Reduce costs

Improve your bottom line with a compact design and low product life-cycle cost. The withdrawable relay element allows for easy replacement, simplifying maintenance.

Increase system availability

Enable higher availability with IEC 61850 Edition 1 & 2, DNP3 TCP and Modbus TCP, supporting HSR, PRP and RSTP operation. Role Based Access Control and signed firmware provide enhanced cybersecurity.

Featured capabilities

Comprehensive protection functions

Deploy a wide range of protection and detection functions. The Reyrolle 7SR54 supports all transformer vector groups and earthing connections for comprehensive coverage across your network.

Input and output options

Utilize up to 12 current inputs, 4 voltage inputs, 37 binary inputs and 18 binary outputs. The power supply and binary inputs cover the full operating range with configurable thresholds for adaptable system integration.

User-friendly interface and connections

Use IEC 61850 Ethernet communications and a front USB port for configuration and rear RS485. A large LCD, tactile pushbuttons and programmable LEDs provide a user-friendly interface for easy management.