GE Multilin G30 Generator Protection Systems

The GE Multilin G30 Generator Protection System offers advanced protection for small to medium-sized generators, including combined generator and transformer protection. It is built on the industry-leading UR platform and is ideal for steam, hydraulic, and combustion-turbine generators in various applications. The G30 excels in scenarios where both the generator and transformer require protection within the same zone, delivering cost-effective solutions in a single device. Moreover, it ensures advanced communication capabilities through an integrated managed Ethernet switch and supports standard communication protocols like IEC 61850. The G30, a member of the UR family of protection relays, is your reliable choice for safeguarding small to medium-sized generators and applications that demand combined generator and transformer protection.

APPLICATIONS

• Small to medium-sized generators typically driven by steam, gas or hydraulic turbines
• Pumped storage generators
• Combined generator and transformer in the zone of protection•Distributed Generator (DG) interconnect protection as per IEEE 154

KEY BENEFIT

• Complete protection for small to medium-sized generators
• Advanced automation capabilities for providing customized protection and control solutions
• Combined generator and transformer protection
• Three independent fiber or copper Ethernet ports for simultaneous/ dedicated network connections with advanced 1 microsecond time synchronization via LAN with IEEE® 1588 support
• High-speed peer-to-peer communications reduces relay-to-relay wiring and associated installation costs
• Embedded IEC®61850 protocol
• Increase network availability by reducing failover time to zero through IEC 62439-3 “PRP” support
• CyberSentry™ provides high-end cyber security aligned to industry standards and services (NERC® CIP, AAA, Radius, RBAC, Syslog)
• Robust network security enabling Critical Infrastructure Protection through user command logging, and dual permission access control
• High-end fault and disturbance recording eliminates the need for redundant recording devices
• Complete IEC 61850 Process Bus solution provides resource optimization and minimizes total P&C life cycle costs

FEATURES

Protection and Control

• Overall unit differential including transformer
• Restricted ground fault, thermal overload protection, directional, time, instantaneous, phase, neutral, negative sequence and ground overcurrent protection
• Split-phase protection
• Loss of excitation, overexcitation
• Third harmonic neutral undervoltage
• Generator unbalance
• Reverse and low forward power
• Accidental energization
• Synchronism check
• Phase sequence reversal for pumped storage
• CT failure for each CT bank, VT fuse failure

Communications

• Networking interfaces: up to three Ethernet ports 100Mb fiber or copper, RS485, RS232, RS422, G.703, C37.94
• Multiple protocols: IEC 61850, DNP 3.0 and Modbus® serial/TCP, IEEE 1588, IEC 60870-5-104 and 103, PRP, SNTP, HTTP, TFTP, EGD
• Direct I/O: secure, high-speed exchange of data between URs for transformer tripping applications
• Embedded managed Ethernet switch with four 100 Mbit fiber optic ports and 2 copper portsIEC 61850 Process Bus Interface

IEC 61850 Process Bus Interface

• Robust communications with up to 8 HardFiber Bricks
• Redundant architecture for dependability and securityMonitoring and Metering

Monitoring and Metering

• Metering: current, voltage, power, energy, frequency
• Advanced recording capabilities deliver a 1024 event recorder, configurable and extended waveform capture and data logger
• Setting for security audit trails for tracking changes to G30 configurationsEnerVistaTM Software•Graphical Logic Designer and Logic Monitor to simplify designing and testing procedures via EnerVista UR Engineer

EnerVistaTM Software

• Service and update notification toolset ensures device documents and software are up-to-date via EnerVista Launchpad
• EnerVista Integrator providing easy integration of data in the G30 into new or existing monitoring and control systems

For more in-depth product information, please click to download or access the document online ：GE_G30_-_Brochure100

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