Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 6EUR6EH A6EC10000087 |
| Manufacturer | GE (General Electric) |
| Product Type | Digital I/O Expansion / Transformer Protection Module |
| Series/Platform | Multilin UR Family Universal Relays |
| Power Supply | 24 VDC (Internal Backplane Bus) |
| Digital Inputs (DI) | 8x High-Speed DI (Configurable) |
| Digital Outputs (DO) | 8x Form-C Relay Outputs (Configurable) |
| Communication Interface | RS-485 (Modbus RTU) |
| Response Time | < 2 ms |
| Operating Temperature | -40°C to +70°C |
| Isolation Voltage | 3000 Vrms (Optical Isolation) |
| Mounting Type | Internal Chassis Mount (Backplane) |
| Protection Level | IP20 (Front), IP21 (Back) |
| Dimensions (WxHxD) | 90mm x 50mm x 100mm |
| Weight | Approx. 0.1 kg |
Main Features and Advantages
High-speed I/O expansion:
Unlike generic PLC modules, the 6EUR6EH A6EC10000087 is optimized for protection-grade speed. Its sub-2ms response time on digital inputs and outputs ensures that auxiliary trip commands and status changes are processed with minimal latency. This is critical for maintaining coordination with the main protection relay’s fault detection algorithms during emergency fault conditions.
Seamless UR ecosystem integration:
The module plugs directly into the UR relay’s backplane, sharing the same power supply and communication bus. This design eliminates the need for external wiring between the main relay and an external I/O block, significantly reducing points of failure and simplifying the overall system architecture. Configuration is managed entirely within the familiar GE EnerVista software suite.
Ruggedized for critical infrastructure:
Designed for 24/7 operation in uncontrolled substation environments, the 6EUR6EH A6EC10000087 features robust conformal coating on its PCB and high-grade isolation barriers. It provides superior resistance to humidity, dust, and corrosive atmospheres, ensuring long-term reliability for high-voltage assets.
Cost-effective system upgrade:
In substation expansion projects where the base I/O of the main relay is fully utilized, integrating the 6EUR6EH A6EC10000087 provides the necessary extra I/O capacity without requiring a costly upgrade to a larger main relay.
Application Field
The 6EUR6EH A6EC10000087 is widely deployed in high-voltage substations and industrial power distribution networks. In a typical 220kV or 230kV substation expansion project, existing GE UR-series transformer protection relays (such as the T60) often require additional digital points to control new cooling system contactors and receive status signals from newly installed disconnectors. The 6EUR6EH A6EC10000087 integrates perfectly into the relay chassis to provide this extra I/O capacity.
Beyond substation automation, the module is heavily utilized in power generation facilities, including thermal and renewable energy plants, to protect critical step-up transformers. In heavy industrial settings such as steel mills, petrochemical plants, and large manufacturing facilities, the ensures the safety of large power transformers against overloads and short-circuit conditions. Its ability to withstand extreme temperatures and high electromagnetic interference makes it ideal for harsh outdoor switchgear and control room applications.
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