It can also serve as backup protection for differential protection systems on generators, transformers, bus bars and electrical lines. For overhead line protection the MRI4 is also available with an optional auto reclosing function. The protection functions of the MRI4 have been adapted to comply with the requirements of the VDE AR N 4110:2018.

The MRI4 is available in 96 variants, that cover all combinations of properties that you might need or not need for your application. Each variant is uniquely specified by a typecode of form MRI4-2xxxxx (i.e. 5 digits/letters following the ‘-2’). Check the Order Form (depicted below, or in the brochure DOK-FLY-MRI4-2E or in the user manual MRI4-3.6-EN-MAN) for a complete overview.

With the HighPROTEC Line Woodward offers an outstanding solution for the reliable protection of
distribution and generator applications. The innovative device handling and PC tool with plausibility check and internal fault simulator, combined with high flexible hardware, minimized commissioning, training costs and setting failures. The menu overview can be optimized by hiding not relevant functions.

The line is easily applicable for generator, cable and line, and transformer differential protection,
directional and non-directional feeder protection as well as motor protection. The all-in-one protection
concept for various applications guarantees a high availability of your electrical equipment and your grid. Woodward is an independent designer, manufacturer, and service provider of control solutions for the aerospace and industrial markets. Our aerospace systems and components optimize the performance of fixed wing and rotorcraft platforms in commercial, business and military aircraft, ground vehicles and other equipment.

Its industrial related systems and components enhance the performance of industrial gas and steam turbines, reciprocating engines, compressors, wind turbines, electrical grids and other energy related industrial equipments. The company’s innovative fluid energy, combustion control, electrical energy, and motion control systems help customers offer cleaner, more reliable and more efficient equipment. Our customers include leading original equipment manufacturers and end users of their products.

Woodward MRI4-Family HIGHPROTEC relay : Feeder Protection

From the generation via transmission and distribution down to the load, Woodward’s feeder protection relays protect the entire power chain throughout different voltage levels.

Modern communication and linking to systems are the basis for economical and efficient applications of your operating components. For nearly every communication network Woodward offers you various protocols like Modbus® RTU and Modbus® TCP, Profibus® DP, IEC 60870-5-103 and IEC 61850.

Woodward’s easy-to-use feeder protection relays work safely and precisely, and are well-proven in the fields of utilities, industrial, and other power systems. They are thoroughly designed and engineered to maximize the availability of your power distribution system.

The following product lines offer the right Feeder Protection products to you.

HIGHPROTEC LINE

The new HighPROTEC line is the latest generation of complete protection for medium-voltage power systems.

Learn more about HighPROTEC Feeder Protection Devices:

MCA4 | MRA4 | MRI4

HIGH TECH LINE

These modular relays combine well-proven technology with easy handling.

PROFESSIONAL LINE

Comprehensive protective functions and competitive performance ratio are the hallmark of these relays.

To explore protection functions and comprehensive series of Woodward devices, click here!