Description
The GE Multilin 345 is an advanced, microprocessor-based numerical protection and management relay designed specifically for power transformers. It delivers comprehensive security, exceptional monitoring capabilities, and intuitive configuration features to ensure the reliable operation of electrical substations and industrial power distribution networks.
⚙️ Product Datasheet & Technical Parameters
- Product Model: 345-E-P5-G5-H-E-S-N-N-SN-D-N
- Manufacturer: GE Multilin (General Electric)
- Country of Origin: United States / Canada
- Power Supply: 120-240 VAC / 125-250 VDC nominal control voltage
- Dimensions: Standard 19-inch rack compatible enclosure, height 4U
- Weight: Approximately 4.5 kg
- Operating Temperature: -20°C to +60°C
- Communication Interfaces: RS485, front USB, and rear Ethernet ports
- Rated Frequency: 50 Hz / 60 Hz selectable
- Protection Functions: Transformer differential, overcurrent, thermal overload, and restricted earth fault
📖 Product Usage Instructions
- Installation & Mounting: Mount the relay securely inside a standard electrical panel or cabinet within a controlled substation environment, ensuring adequate ventilation clearance.
- Wiring & Connections: Connect control power, current transformers, and voltage transformers accurately to the corresponding rear terminal blocks using proper shielded cables.
- Configuration & Setup: Utilize the EnerVista 345 setup software via the front USB port or network connection to configure protection settings, thresholds, and communication protocols.
- Testing & Commissioning: Conduct secondary injection tests, verify tripping logic, and perform complete system checks before energizing the protected transformer.
❓ Frequently Asked Questions (Q&A)
- Q: What is the primary use of the GE Multilin 345 relay?
A: It is primarily used for the protection, control, and monitoring of two-winding power transformers in industrial and utility applications.
- Q: How can users update or change the configuration settings?
A: Configurations can be managed easily using the front panel interface or through the dedicated EnerVista software suite on a connected PC.
- Q: Does the device support modern substation communication standards?
A: Yes, it supports standard utility communication protocols like Modbus, DNP3, and optional IEC 61850 integrations.
🔥 Recommended Other GE Multilin Series & Models
- GE Multilin 339: Advanced motor protection system designed for low and medium-voltage motors.
- GE Multilin 350: Feeder protection and control system optimized for distribution networks.
- GE Multilin 469: Microprocessor-based motor management relay for industrial motor protection.
- GE Multilin 489: Comprehensive generator management relay for synchronous and induction generators.
- GE Multilin 745: High-speed transformer protection relay built with multi-processor architecture.
- GE Multilin 845: Advanced protective relay platform tailored specifically for power transformers.
- GE Multilin 850: Feeder protection system designed for advanced control and management of electrical feeders.
- GE Multilin L30: Line current differential protection relay for sub-transmission lines.
- GE Multilin G60: Medium to large generator protection system with advanced synchrophasor capabilities.
- GE Multilin C60: Breaker protection and control system providing high-speed trip and automation features.
