Built on the industry-leading UR platform, the G30 provides advanced protection for small to medium-sized steam, hydraulic and combustion-turbine generators. The G30 is also well suited for applications where both the generator and transformer are in the same zone of protection, providing the required protection in one device. The G30 provides advanced communication with an integrated managed Ethernet switch, while supporting standard communication protocols including IEC 61850.
Complete protection for small to medium-sized generators and transformers
Complete IEC 61850 Process Bus solution providing resource optimization and minimizing total P&C life cycle costs
Combined generator and transformer protection
Advanced automation capabilities for providing customized protection and control solutions
Robust network security enabling Critical Infrastructure Protection through user command logging, and dual permission access control
Application flexibility with multiple I/O options and programmable logic (FlexLogic™)
High-end fault and disturbance recording eliminating the need for redundant recording devices
Ambient temperature monitoring with alarms when outside temperature exceeds upper thresholds
High-speed peer-to-peer communications allowing reduction of relay-to-relay wiring and associated installation costs
Embedded IEC61850 protocol
Supports English, French, Russian, Chinese and Turkish languages on the front panel
Small to medium-sized generators typically driven be steam, gas or hydraulic turbines
Combined generator and transformer in the zone of protection
Pumped storage generators
Overall unit differential including transformer
Restricted ground fault
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
The G30 generator protection system provides comprehensive protection for small to medium-sized steam, hydraulic and combustion-turbine generators as well as applications that have both the generator and transformer in the same zone of protection. The G30 is ideal for protecting single and multi-pole generators with single or split-phase winding configurations of generators. The G30 includes advanced automation and communication capabilities, extensive I/O options, and powerful fault recording features that can simplify fault and disturbance troubleshooting and minimize generator downtime. As part of the UR family, the G30 provides superior protection and control.
Metering - current, voltage, power, energy, frequency
Oscillography – analog and digital parameters at 64 samples/cycle
Event Recorder - 1024 time tagged events with 0.5ms scan of digital inputs
Data Logger - 16 channels with sampling rate up to 1 sample / cycle
Setting for security audit trails for tracking changes to G30 configurations
The G30 is the single point for protection, control, metering, and monitoring in one integrated device that can easily be connected directly into HMI or SCADA monitoring and control systems like Viewpoint Monitoring as shown.
The G30 incorporates advanced automation features including powerful FlexLogic™ programmable logic, communication, and SCADA capabilities that far surpass what is found in the average generator relay. The G30 integrates seamlessly with other UR relays for complete system protection, including unit and auxiliary transformers, and balance of plant protection.
FlexLogic allows for the customization of the G30 to operate and control the breakers and other auxiliary devices needed to fit most generator protection schemes and applications.
Complete IEC 61850 Process Bus solution providing resource optimization and minimizing total P & C life cycle costs
Three independent 100Mbps Ethernet ports enable purpose specific LAN support that eliminates latency effect of heavy traffic protocols on mission critical communication services
Embedded IEEE 1588 time synch protocol support eliminates dedicated IRIG-B wiring requirements for IEDs
Direct I/O secures high-speed exchange of binary data between URs
Increase network availability by reducing failover time to zero through IEC62439-3 “PRP” support
The G30 provides advanced communications technologies for remote data and engineering access, making it the easiest and most flexible generator protection relay to use and integrate into new and existing infrastructures. Direct support for fiber optic Ethernet provides high-bandwidth communications allowing for low-latency controls and high-speed file transfers of relay fault and event record information. The available three independent and redundant Ethernet options provide the means to create fault tolerant communication architectures in an easy, cost-effective manner.
The G30 supports the most popular industry standard protocols enabling easy, direct integration into DCS and SCADA systems.
IEC 61850
DNP 3.0
Ethernet Global Data (EGD)
IEC 60870-5-104
Modbus RTU, Modbus TCP/IP
IEEE 1588, SNTP for time synch
PRP as per IEC 62439-3
In addition to providing high-speed connectivity directly to your Universal Relay, the UR Switch Module provides an additional 4 fiber Ethernet ports, for connection to other relays in the system as well as upstream connectivity. It also provides 2 RJ45 copper Ethernet ports which can be used to connect local devices such as PCs, meters, or virtually anything else in the system.
The UR Switch Module provides a simple way to add fully-managed Ethernet networking to your relays and devices without the need for additional hardware or a dedicated communications cabinet.
The UR Switch Module includes all of the management and features that come with all MultiLink managed switches, and can be easily integrated into a network that has other Ethernet switches.
When used in a ring topology with other UR Switch Modules or MultiLink Switches, the UR Switch Module can be configured to use MultiLink’s Smart RSTP feature to provide industry-leading network recovery for ring topologies, at a speed of less than 5ms per switch. Learn More
Use the G30 with integrated IEC 61850 to lower costs associated with generator protection, control and automation. GE’s leadership in
IEC 61850 comes from thousands of installed devices and follows on years of development experience with UCA 2.0.
The G30’s IEC 61850 Process Bus module is designed to interface with the Multilin HardFiber System, allowing bi-directional IEC 61850 fiber optic communications. The HardFiber System is designed to integrate seamlessly with existing Universal Relay applications, including protection functions, FlexLogic, metering and communications. Learn More
CyberSentry enables UR devices to
deliver full cyber security features that help customers to comply with NERC CIP and NITIR 7628 cyber security requirements through supporting the following core features:
Password Complexity
Supporting up to 20 alpha- numeric or special characters, UR passwords exceed NERC CIP requirements for password complexity. Individual passwords per role are available.
AAA Server Support (Radius)
Enables integration with centrally managed
authentication and accounting of all user
activities and uses modern industry best practices and standards that meet and exceed NERC CIP requirements for authentication and password management.
Role Based Access Control (RBAC)
Efficiently administrate users and roles within UR devices. The new and advanced access functions allow users to configure up to five roles for up to eight configurable users with independent passwords. The standard “Remote Authentication Dial In User Service” (Radius) is used for authentication.
Event Recorder (Syslog for SEM)
Capture all cyber security related events
within a SOE element (login, logout, invalid
password attempts, remote/local access, user in session, settings change, FW update, etc), and then serve and classify data by security level using standard Syslog data format. This enables UR devices integration with established SEM (Security Event Management) systems.
The EnerVista™ suite is an industry-leading set of software programs that simplifies every aspect of using the G30 relay. The EnerVista™ suite provides all the tools to monitor the status of the protected asset, maintain the relay, and integrate information measured by the G30 into DCS or SCADA monitoring systems. Convenient COMTRADE and Sequence of Events viewers are an integral part of the UR setup software included with every UR relay, to carry out postmortem event analysis and ensure proper protection system operation. Learn More
Cyber Security - CyberSentry UR (FW v7.xx)
CyberSentry enables UR devices to
deliver full cyber security features that help
customers to comply with NERC CIP and NITIR 7628 cyber security requirements through supporting the following core features:
- Password Complexity
- AAA Server Support (Radius)
- Role Based Access Control (RBAC)
- Event Recorder (Syslog for SEM)
Fully Compatible with GE's Multlilin HardFiber System
- Provides support for GE's
IEC 61850 HardFiber Process Bus Solution:
- Complete IEC 61850 Process Bus Solution providing resource optimization and minimizing total P&C life cycle costs Learn More
New and Enhanced Communication Capabilities (FW v7.xx)
- Three independent Ethernet ports
- Time synchronization via IEEE 1588
- PRP as per IEC 62439-3 (FW 7.10)
Extended Oscillography Records (FW v7.xx)
- Configurable events allow for records of up to 45s at 64 samples per cycle
New and Enhanced Protection and Control Functionality (FW version 5.90)
- New thermal overload element
- New CT failure element for increased current differential selectivity (FW version 7.00)
Protection & Control 
