Siemens Reyrolle Relay

Product Details:

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

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.

Product Details:

Siemens Reyrolle 7SR51 is an advanced numerical overcurrent and feeder protection relay designed for comprehensive protection and control solutions in electrical power systems. It is part of the Reyrolle 5 series and is known for its user-friendly interface, high performance, and flexible communication options. Key Features and Specifications

• Protection Functions: The relay includes a wide range of protection functions, such as time-delayed and instantaneous overcurrent (51/50), earth fault (51N/50N), negative sequence overcurrent (46), thermal overload (49), circuit breaker failure protection (50BF), and automatic reclosing (79).
• Communication: It supports multiple industry-standard communication protocols, including IEC 61850 (Editions 1 & 2), Modbus TCP, DNP3, and RS485, enabling seamless integration with SCADA systems. A standard front USB port is available for local configuration using the Reydisp Manager 2 PC-based software tool.
• Hardware: The device features a robust, compact, and often withdrawable design with a backlit 128 x 128 LCD and programmable tri-color LEDs for clear indications and an intuitive user interface. It offers flexible input/output configurations for current and voltage transformers.
• Applications: The Siemens Reyrolle 7SR51 is suitable for various applications, including overcurrent and earth fault protection for medium voltage substations and as backup protection for other main protection devices on lines, transformers, generators, motors, and busbars

Product Details:

Siemens Reyrolle 7SR57 Motor Protection Numerical Relay, a device engineered for comprehensive protection of industrial motors. It safeguards motors from potential damages caused by operational irregularities and electrical faults. Key Features and Specifications

• Function: Provides multi-functional motor protection, including thermal overload protection (49R), short circuit protection (50/51), earth fault protection, phase imbalance detection (46UB), locked rotor protection (14), and more.
• Design: Features a compact, robust, and withdrawable design (Size 6 or 12 housing) for easy replacement and to withstand harsh industrial environments.
• User Interface: Equipped with a backlit 128 x 128 LCD display, tactile pushbuttons, and 28 programmable tri-color LEDs for clear indications and user-friendly operation.
• Communication: Supports standard front USB port for configuration, rear RS485, and Ethernet ports (IEC 61850 Edition 1 & 2, DNP3 TCP, Modbus TCP) for seamless integration into automation systems and remote monitoring.
• Inputs/Outputs: Various configurations available, such as 4 CT + 8 Binary Inputs (BI) + 6 Binary Outputs (BO), with options for voltage transformer (VT) inputs and up to 16 temperature sensors.
• Reliability: Utilizes powerful, proven protection algorithms and robust cybersecurity features to ensure reliable operation and secure access.

ApplicationsThe Siemens Reyrolle 7SR57 is used across various industrial settings to protect motors during all starting and running sequences, ensuring operational continuity and equipment longevity. Its thermal algorithm is specifically optimized to closely match the thermal characteristics of motors, preventing damage from overheating and phase imbalances.