Overview
The GE UR7CH, also cataloged as the UR7CH Communication Module, operates as a dedicated hardware component for data communication execution within GE Multilin Universal Relay platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | UR7CH |
| Brand | GE Multilin (General Electric) |
| Origin | USA |
| Product Type | Communication Module |
| Series | Multilin Universal Relay (UR Series) |
| Weight | Approx. 0.5 kg |
| Dimensions | Approx. 85 x 71 x 30 mm |
| Operating Temp | -40 deg C to +60 deg C |
| Power Consumption | Configuration dependent, supplied from UR relay chassis |
| Installation Type | Plug-in module for GE UR relay chassis |
| Power Supply | 24 – 250 VDC or 100 – 240 VAC system compatibility |
| Communication Interfaces | Ethernet and serial interfaces |
| Supported Protocols | IEC 61850, Modbus, DNP3, IEC 60870-5-103 |
| Time Synchronization | IEEE 1588 Precision Time Protocol support |
Industrial Control Network Communication Features
The GE UR7CH provides communication expansion functions for GE Multilin UR protection relay systems. The module transfers relay data between the internal UR processor architecture and external automation networks through configured Ethernet or serial communication interfaces.
The module supports Profinet / EtherNet-IP deterministic network concepts used in industrial control environments through protocol-based data exchange architecture. It also maintains firmware flash compatibility with the host UR relay platform to ensure correct communication module recognition and configuration management.
The UR7CH supports SCADA integration by transmitting protection measurements, relay status information, event records, and control commands. Communication parameters, network addressing, and protocol settings are configured according to the installed relay application.
Frequently Asked Questions
Q: How is the UR7CH installed inside a GE UR relay system?
A: The UR7CH is installed as a plug-in communication module within the GE Multilin UR relay chassis. Installation requires verification of chassis slot compatibility and system power isolation before module insertion.
Q: Does the UR7CH support direct communication with SCADA systems?
A: Yes. The module provides Ethernet and serial communication interfaces for SCADA and automation system integration using supported protocols including IEC 61850, Modbus, DNP3, and IEC 60870-5-103.
Q: Is firmware compatibility required between the UR7CH and relay CPU module?
A: Yes. The communication module requires compatible firmware and configuration settings with the host UR relay CPU to maintain correct internal communication operation.
Field Installation Guidelines
- Verify the GE UR chassis configuration and available communication slot before installation.
- Disconnect relay power sources before inserting or removing the UR7CH module.
- Confirm firmware compatibility between the communication module and host relay CPU.
- Use shielded communication cables where required by the installed network environment.
- Maintain proper cable routing separation between communication wiring and high-voltage power conductors.
- Verify network addressing, protocol parameters, and communication diagnostics before commissioning.
