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Application Scenarios:
In a 220kV substation expansion project, the existing GE UR-series transformer protection relay (e.g., T60) requires additional digital points to control new cooling system contactors and receive status signals from newly installed disconnectors. The base I/O of the main relay is fully utilized. Integrating the GE 6EUR6EH A6EC10000087 module into the relay chassis provides the necessary extra I/O capacity without requiring a costly upgrade to a larger main relay. Its fast response time ensures timely execution of trip commands during fault conditions, while its robust design withstands the substation’s electromagnetic interference.
Parameter:
| Main Parameters | Value/Description |
|---|---|
| Manufacturer / Series | General Electric (GE) / Multilin UR Series |
| Part Number | 6EUR6EH (also identified as A6EC10000087) |
| Product Type | Digital I/O Expansion Module (for UR relay chassis) |
| Primary Function | Expands digital input and output capacity for transformer/feeder protection schemes |
| Compatibility | Plugs into GE Multilin UR family relays (e.g., T60, F60, C30, etc.) |
| Power Supply | 24 VDC (typically sourced from the UR relay’s internal power bus) |
| Communication Interface | RS-485 (Modbus RTU) for integration with SCADA/DCS systems |
| Digital Inputs (DI) | 8x High-Speed DI (configurable for status, breaker position, etc.) |
| Digital Outputs (DO) | 8x Form-C Relay Outputs (configurable for trip, alarm, or control) |
| Response Time | < 2 ms (for fast tripping and high-speed event reporting) |
| Operating Temperature | -40°C to +70°C (typical for industrial/substation environments) |
| Mounting | Internal Chassis Mount (plugs into UR relay backplane) |
| Isolation | 3000 Vrms (optical isolation for noise immunity in HV environments) |
| Certifications | UL, CE, TUV (meets international industrial safety standards) |
Technical Principles and Innovative Values:
The 6EUR6EH A6EC10000087 is engineered to extend the life and functionality of existing UR relay installations without compromising on speed or reliability.
- Innovation Point 1: High-Speed I/O Expansion: Unlike generic PLC modules, this unit 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, which is critical for maintaining coordination with the main protection relay’s fault detection algorithms.
- Innovation Point 2: Seamless UR Ecosystem Integration: The module plugs directly into the UR relay’s backplane, sharing the same power supply and communication bus. This eliminates the need for external wiring between the main relay and an external I/O block, reducing points of failure and simplifying the overall system architecture. The configuration is managed entirely within the familiar GE EnerVista software suite.
- Innovation Point 3: Ruggedized for Critical Infrastructure: Designed for 24/7 operation in uncontrolled substation environments, the module features robust conformal coating on its PCB and high-grade isolation barriers. This provides superior resistance to humidity, dust, and corrosive atmospheres, ensuring long-term reliability for assets like transformers and circuit breakers.
