Description
The GE Multilin C37.94SM 1300nm Single-Mode ELED 2-Channel Communication Module (designed for the UR2BH platform) is an advanced telecommunication interface card developed for the Universal Relay (UR) series. It is engineered to provide secure, high-speed, and reliable optical data transmission between protection relays and multiplexer equipment over single-mode fiber infrastructure, adhering strictly to the IEEE C37.94 standard for critical power substation automation and teleprotection schemes.
🔌 Product Datasheet Parameters
- Part Number: UR2BH C37.94SM 2-Channel Module
- Manufacturer: GE Multilin (General Electric)
- Series: Universal Relay (UR) Platform / UR2BH
- Product Type: IEEE C37.94 Optical Communications Module
- Fiber Type: Single-Mode (SM) Fiber
- Optical Source: 1300 nm ELED (Edge-Emitting LED)
- Channel Capacity: 2 Independent Channels
- Transmission Rate: N x 64 kbps (where N = 1 to 12)
- Dimensions: Standard UR plug-in modular slot format (approx. 15 cm x 10 cm x 5 cm)
- Weight: Approximately 0.50 kg
📖 Product Instructions
- Ensure all power to the UR relay chassis is completely switched off before inserting or hot-swapping any communication module.
- Wear an approved electrostatic discharge (ESD) wrist strap while handling the board to safeguard sensitive internal electronic components.
- Carefully slide the module into the designated communication slot rails of the UR2BH chassis, pushing evenly until fully seated.
- Tighten the integrated retention screws securely to ensure correct physical grounding and prevent accidental displacement.
- Connect the single-mode optical fibers to the appropriate transceiver ports, verify link status LEDs, and configure communication parameters via the EnerVista UR Setup software.
❓ Frequently Asked Questions (Q&A)
- Q: What is the main purpose of the C37.94SM communication module?
A: It provides a standardized IEEE C37.94 optical interface allowing UR protection relays to communicate seamlessly with multiplexers and other teleprotection gear over long-distance single-mode fiber networks.
- Q: Why does this model use a 1300nm ELED optical source instead of a standard laser?
A: The 1300 nm ELED provides an optimal balance of optical power and spectral width suited for single-mode inter-substation runs while maintaining high reliability and safety compliance.
- Q: How can communication diagnostics and link performance be monitored?
A: Real-time diagnostics, channel error rates, loss of signal alarms, and link performance metrics can be monitored directly through the relay front panel or via the EnerVista software suite.
🔍 Recommended GE Multilin UR Series Modules & Relays
- GE Multilin L90 (Line Current Differential Relay)
- GE Multilin L60 (Line Distance Protection System)
- GE Multilin L30 (Sub-transmission Line Current Differential Relay)
- GE Multilin B95 (Busbar Protection System)
- GE Multilin T60 (Transformer Protection System)
- GE Multilin G60 (Generator Protection System)
- GE Multilin UR ETHERNET URCM (Ethernet Communications Module)
- GE Multilin UR DIO (Direct I/O Communication Module)
- GE Multilin UR G.703 (G.703 Telecommunication Module)
- GE Multilin UR RS422 (Serial Communications Module)
