Reyrolle 7SR46: CT-powered overcurrent protection

Why Reyrolle 7SR46?

Reyrolle 7SR46 is a CT-powered overcurrent protection relay with the option for an external auxiliary power supply. This panel-mounted numeric relay provides both definite-time and inverse-time overcurrent and earth-fault protection for distribution grid applications such as cable networks and Ring Main Units (RMU). Reyrolle 7SR46 integrates with SCADA systems. Its compact, easy-to-use front panel includes navigation keys, an LCD and USB port.

10 fault records
100 event records
Password protection
Instantaneous and delayed overcurrent protection functions
Parametrization via keypad and/or via Reydisp Evolution PC software
Internal lithium battery back-up
Real-time clock
Self-monitoring including battery condition monitoring
Suitable for specific wide-measuring range CTs (class 5P80)

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Enhanced protection

High sensitivity with CT power : Trip-ready at 80 % of Ismin (1-phase) and 40 % of Ismin (3-phase)

Reliability

CT-powered with auxiliary supply and battery backup for enhanced resilience, ensuring continuous operation when reliability matters most.

Easy Integration

Relay is designed in a compact housing for positioning neatly on the RMU.

Featured capabilities

Easy Connection

USB-powered operation allows fast configuration and convenient data retrieval without the need for an external power source.

Easy Maintenance

The 7SR46 features a self-monitoring internal battery that is easily accessible from the front panel, enabling quick and convenient replacement during maintenance.

User-friendly interface

Easy navigation via front-panel controls, LCD display, front USB port, and rear RS485 communication (MODBUS RTU/IEC 60870-5-103). Features 3 CT inputs, 2 binary inputs, 2 outputs, 4 LEDs, and a flag indicator.

Explore resources (in English)

Downloads

Catalog Reyrolle 7SR46

Tender specifications

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