Penerangan
Overview
The GE Multilin G30 is a microprocessor-based generator protection relay engineered for small to medium-sized generators. Part of GE’s UR (Universal Relay) series, it integrates protection, control, monitoring, and communication capabilities within a compact, modular design, suitable for steam, hydro, and combustion turbine applications.
Key Applications
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Generator and generator-transformer protection
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Small to medium-sized turbine units
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Integration with SCADA/DCS systems via standard protocols
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Renewable and conventional power generation plants
Technical Specifications
| Feature | Specification |
|---|---|
| Relay Type | Generator Protection Relay |
| Series | UR Series |
| Protection Functions | Differential protection, overcurrent, ground fault, thermal overload, voltage and frequency monitoring |
| Control Functions | Breaker control, auto-reclosing, programmable logic control (FlexLogic™) |
| Metering | Phase currents, line-to-line voltage, power (kW/kVA/kVar), energy, frequency, power factor |
| Event Recording | Sequence of Events (SOE), waveform capture, disturbance recording |
| Automation | FlexLogic™ programmable logic with up to 16 FlexElements |
| Communication Protocols | IEC 61850, Modbus RTU/TCP, DNP3, TCP/IP, OPC |
| Display | Full-color LCD with real-time monitoring and control |
| Operating Temperature | –40 °C to +70 °C |
| Humidity | Up to 95% non-condensing |
| Altitude | Up to 2000 m without derating |
| Construction | Modular draw-out case for easy maintenance and upgrades |
Features and Benefits
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Comprehensive Protection: Covers generator differential, overcurrent, ground fault, and thermal protection
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Advanced Automation: FlexLogic™ allows customized control and protection schemes tailored to the plant’s operational needs
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Event Analysis: SOE and waveform capture facilitate fault diagnosis and reduce downtime
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Flexible Communications: Full IEC 61850, Modbus, and DNP3 support enables seamless integration with modern control systems
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User-Friendly Interface: Large full-color LCD provides intuitive visualization for monitoring and operational control
FAQ
Q: Can the G30 be used with both steam and hydro generators?
A: Yes, it is compatible with steam, hydro, and combustion turbine generators, supporting a wide range of generator sizes.
Q: What communication protocols are supported?
A: IEC 61850, Modbus RTU/TCP, DNP3, OPC, and standard TCP/IP interfaces.
Q: How many programmable FlexLogic elements are available?
A: Up to 16 FlexElements can be configured for advanced automation and custom logic schemes.
Q: Does it support waveform capture?
A: Yes, disturbance recording and waveform capture are integrated for detailed event analysis.
Similar Models: G30 vs. G40 – G40 provides higher fault current ratings and additional I/O channels, while G30 is optimized for small to medium generator sizes.
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