General Electric UR 9NV Versatile Feeder Protection Relay

The GE UR 9NV is a state-of-the-art feeder protection relay designed for high-performance protection of medium- and high-voltage feeders. Developed by GE, this relay ensures protection against various faults and abnormal conditions, offering exceptional versatility and reliability. It is engineered to handle complex feeder protection schemes with a robust and flexible design, ensuring the safety and efficiency of electrical distribution systems.

Key Features of the GE UR 9NV

The GE UR 9NV offers a variety of advanced features aimed at protecting electrical feeders from a range of faults. These include:

• I/O Channels: The relay is equipped with 8 configurable analog output channels, which provide a high level of flexibility for integration with various system components.
• Output Range: The output voltage ranges from 0 to 10 V DC, while the output current range spans from 4 mA to 20 mA, making it adaptable to different applications.
• Protection Functions: The GE UR 9NV is designed to provide both primary and backup protection for feeders. It also supports bus blocking/interlocking schemes, enabling a high degree of control over the feeder protection system.

Technical Specifications

Below are the technical specifications of the GE UR 9NV feeder protection relay:

Applications of the GE UR 9NV

The GE UR 9NV is designed for a wide range of feeder protection applications. Its versatility allows it to be used in both primary and backup roles within electrical networks. Some of the key applications include:

• Feeder Protection: Protects medium- and high-voltage feeders from faults, ensuring the integrity and reliability of power distribution.
• Bus Blocking and Interlocking: The relay can be used for bus blocking and interlocking schemes, ensuring safe operations in complex electrical networks.
• Fault Detection: It offers high-speed fault detection capabilities to minimize downtime and prevent further damage to the system.
• Load Shedding: Supports load shedding schemes to maintain system stability during fault conditions.
• Distributed Generation Interconnect Protection: Ideal for protecting interconnections between distributed generation sources and the grid.