Brand: GE (General Electric) Multilin
Model: UR7KH
Series: UR Series Universal Relay System
Function: Dual-channel single-mode fiber communication module. It supports high-speed inter-relay data transmission and network communication. It realizes stable signal interaction for power protection and control relays.
Voltage: Operates on internal relay bus power supply, standard industrial 24V DC system power environment.
GE UR7KH
I. Product Overview
GE UR7KH is a dedicated fiber communication module for GE Multilin UR series relays.
It adopts single-mode laser fiber design with a 1300 nm working wavelength.
It provides two independent communication channels for relay interconnection.
It enhances data transmission speed and anti-interference ability of power relay systems.
This module features compact size and plug-and-play installation.
It is widely used in power substation protection and automation systems.
All products pass strict industrial testing and support 12-month quality warranty.
II. Core Technical Specifications
All specifications comply with GE industrial standards and power industry requirements.
1. Basic Parameters
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Product Model: UR7KH
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Manufacturer: GE Multilin (General Electric)
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Product Type: Fiber optic communication expansion module
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Fiber Mode: Single-mode fiber, 1300 nm laser wavelength
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Channel Quantity: 2 independent transmit and receive channels
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Installation Method: Plug-in embedded installation for UR series relays
2. Communication Performance
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Transmission Medium: Single-mode optical fiber
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Channel Layout: Vertical dual-channel layout, Tx/Rx independent operation
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Transmission Distance: Supports long-distance stable signal transmission
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Data Stability: Low signal loss and high transmission consistency
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Compatibility: Uniform configuration with UR72, UR73 and UR7D series modules
3. Electrical & Environmental Parameters
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Working Power: Powered by the host relay internal bus
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Working Temperature: -25°C to 70°C, suitable for indoor substation environments
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Storage Temperature: -40°C to 85°C
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Humidity Range: 10%–95% RH, non-condensing
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Anti-interference: Strong EMC anti-electromagnetic interference performance
III. Core Product Advantages
1. Dual-channel Independent Communication
Two independent Tx/Rx channels work separately without mutual interference.
It improves communication redundancy and system operation reliability.
2. Long-distance Stable Transmission
1300 nm single-mode laser design ensures low optical attenuation.
It supports long-distance communication in large power stations and substations.
3. Excellent System Compatibility
It perfectly matches all UR series universal protection relays.
It shares the same configuration logic with other UR communication modules.
No complex program modification is required for system upgrading.
4. High Industrial Reliability
It adapts to wide temperature and high humidity industrial environments.
It resists strong electromagnetic interference in power sites.
It effectively avoids communication interruption and signal distortion.
5. Simple Installation and Maintenance
Plug-in design supports fast disassembly and replacement.
It simplifies daily maintenance and equipment upgrade work.
IV. Application Scenarios
GE UR7KH is dedicated to power system protection and automation communication.
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Power Substation: Fiber communication expansion for universal protection relays
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Power Grid Automation: Inter-relay data interaction and signal synchronization
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Industrial Power Distribution: High-reliability communication for factory power protection systems
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Smart Power System: Supports IEC standard network communication and data uploading
V. Product Summary
GE UR7KH is a high-performance dual-channel single-mode fiber communication module.
It serves the GE Multilin UR series universal relay system.
It provides stable long-distance fiber transmission and redundant communication functions.
It effectively improves the reliability and real-time performance of power protection systems.
With simple installation and strong compatibility, it is ideal for power station renovation and expansion.
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