GE UR8NH UR Series Digital Input Output Module in stock
GE UR8NH is a pluggable digital I/O module within GE Multilin Universal Relay (UR) platform, designed for power substation protection and automation. It expands digital input and relay output channels for UR protection relays to handle electrical interlock and trip control logic.
This module adopts high isolation design, supports high-speed status acquisition and event time stamping, and exchanges data with main relay CPU over internal Tri-Bus. It is discontinued legacy spare, widely used for replacement and overhaul of substation protection relay systems.
Main Specifications
| Item | Parameter |
| [1] Brand | GE Multilin |
| [2] Model | UR8NH |
| [3] Product Type | Digital Input Output Module |
| [4] Series | Universal Relay (UR) Series |
| [5] Signal Type | Digital input, relay contact output |
| [6] Internal Bus | Tri-Bus internal chassis communication |
| [7] Feature | High electrical isolation, high precision time stamping |
| [8] Compliance | IEC 60255, IEEE C37.90 |
| [9] Mounting | Plug-in slot for UR relay chassis |
| [10] Operating Temp | -20℃ ~ +60℃ |
Core Functions
| Function | Description |
| [1] Digital Status Signal Collection | Read field switch status signals and send real-time data to UR main processor. |
| [2] Relay Contact Output Control | Output dry contact signals to execute circuit trip and safety interlock commands. |
| [3] High Precision Event Timestamp | Record the exact time of signal changes for power system fault analysis. |
| [4] Isolation Anti-interference Protection | High isolation circuit protects the main relay from field surge and noise interference. |
| [5] I/O Channel Expansion | Expand available digital channels for UR series protection relays via plug-in installation. |
Application Scenarios
| Industry | Usage |
| [1] Power Substation | Transformer, feeder and generator protection signal expansion. |
| [2] Thermal Power Plant | Auxiliary power equipment interlock and protection trip control. |
| [3] Oil & Gas Plant | Industrial power distribution cabinet safety interlock and monitoring. |
| [4] Legacy Relay System Maintenance | Spare replacement for aging GE UR series I/O modules. |
FAQ
| Question | Answer |
| [1] What is GE UR8NH? | It is GE Multilin UR series pluggable digital input output module for power protection relays. |
| [2] What communication bus does it use? | It communicates with UR main CPU through internal Tri-Bus chassis bus. |
| [3] What is its core application? | Expand digital I/O for protection relay to implement trip and interlock control. |
| [4] Is it obsolete spare part? | Yes, it is legacy spare for maintenance of old GE UR relay protection systems. |
