UR77H | GE Multilin UR-77-H Inter-Relay Communications Module

Product Overview:

The UR-77-H is an inter-relay communications module used in GE Multilin UR relays. It allows for the exchange of digital status and analog values between relays, enabling faster control, tripping, and teleprotection functions in power systems.

Key Features:

• Module Type: Inter-relay communications module
• Mounting Orientation: Horizontal unit
• Communication Standard: IEEE C37.94
• Functionality: Facilitates the sharing of digital status and analog values between UR relays
• Application: Ideal for fast tripping, control, and teleprotection in power system protection schemes

Communication Specifications:

• Transmission Medium: Multimode fiber optic, 820 nm wavelength
• Number of Channels: 2 communication channels
• Indicators: LED indicators for status and diagnostics

Physical Characteristics:

• Unit Type: Horizontal unit
• Size: Compact design for easy integration into relay panels
• Contact Type: Post and socket for reliable connections

Applications:

• Control: For reliable data exchange between relays for synchronized control
• Fast Tripping: Used in high-speed protection schemes for power systems
• Teleprotection: Supports remote protection and monitoring for critical system components

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