The B30 features integrated protection, control and metering for MV, HV and EHV busbars, providing cost effective, feature-focused busbar protection. Use the B30 to protect busbars with up to 6 feeders with up to two three phase differential zones. The B30 is a cost effective alternative to high impedance schemes, ideal for breaker-and-half bus schemes, with integrated feeder backup protection and metering.
High speed differential protection algorithm for Subcycle trip times of 0.75 power cycle
Complete IEC 61850 Process Bus solution providing resource optimization and minimizing total P&C lifecycle costs
Superior CT saturation detection with only 2 msec of saturation free current for enhanced through fault stability
Ambient temperature monitoring with alarming when temperature exceeds upper thresholds
Cost effective alternative
Advanced automation capabilities for providing customized protection and control solutions
High-end fault and disturbance recording, including internal relay operating signals provided thus eliminating the need for redundant recording devices
Application flexibility with multiple I/O options and programmable logic (FlexLogic™)
Robust network security enabling Critical Infrastructure Protection through user command logging, and dual permission access control
Simplified system integration supporting serial and Ethernet interfaces and multiple protocols
Embedded IEC61850 Protocol with no external communications hardware required
Re-configurable simple bus applications, up to 6 feeders and 2 differential zones with breaker failure
Integrated bus protection and metering for HV and EHV substations
Differential protection with restrained and unrestrained function
Fast and reliable CT saturation detection
Breaker failure protection
External Check-zone
CT ratio mismatch compensation
Dynamic Bus Replica
Back-up time and instantaneous overcurrent elements
Undervoltage function for supervision purposes
The B30 Bus Differential System provides, secure, subcycle low impedance bus protection for a single busbar with up to six feeders. The B30 is ideally suited in applications where high impedance schemes were typically used. Overall system costs can be reduced with the B30, since there is no need for dedicated, or interposing, CTs. The B30 comes with advanced features, such as breaker failure, CT trouble detection, under-voltage supervision, and dynamic bus replica. With its extreme flexibility, which includes a CT ratio mismatch of up to 32:1 between terminals, the B30 is the ideal solution in a wide variety of bus differential applications.
Part of the Universal Relay family, the B30 comes with a variety of versatile features truly integrating protection, monitoring, metering, communication and control in one easy-to-use device. The Universal Relay family offers higher degree of modularity in its design and functionality providing superior performance in protection and control meeting the toughest requirements of the marketplace.
Isolator monitoring
CT trouble monitoring, VT supervision
Metering - current, voltage, frequency
Oscillography - 64 samples/cycle, up to 64 records
Event Recorder - 1024 time tagged events, with 0.5 ms scan of digital inputs
The B30 is the single point for protection, control, metering, and monitoring in one integrated device that can easily be connected directly into DCS or SCADA monitoring and control systems like Viewpoint Monitoring.
The B30 incorporates advanced automation features including powerful FlexLogic™ programmable logic, communication, and SCADA capabilities that far surpass what is found in the average bus relay. The B30 integrates seamlessly with other UR relays for complete system protection.
The internal operation of the B30 elements, logic, and outputs can be monitored in real time to simplify commissioning and troubleshooting procedures
Direct I/O - secure high-speed exchange of binary data between URs
The B30 provides for secure remote data and engineering access, making it easy and flexible to use and integrate into new and existing infrastructures. 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 redundant Ethernet option provides the means of creating fault tolerant communication architectures in an easy, cost-effective manner.
The B30 supports the most popular industry standard protocols enabling easy, direct integration into DCS and SCADA systems.
IEC 61850
DNP 3.0
IEC 60870-5-104
Modbus RTU, Modbus TCP/IP
In addition to providing high-speed connectivity directly to your Universal Relay, the MultiLink 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 RJ-45 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 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 includes all 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 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 B30 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 B30’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 the existing Universal Relay applications, including protection functions, FlexLogic, metering and communications. Learn More
The EnerVista™ Suite is an industry-leading set of software programs that simplifies every aspect of using the B30 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 B30 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 to ensure proper protection system operation. Learn More
Access Control
Multilin devices and relays are designed with simple but powerful security to enable reliability and compliance for virtually any project or implementation. With support for multi-level permissions and multi-factor supervisory controls, Multilin devices can help you manage the integrity of your system during commissioning, testing, implementation, and beyond.
The UR Family provides separate authentication for settings and commands to the system. In addition, as discrete authentications for local and remote access, it also provides a supervisory control factor that can lock or unlock a device for configuration changes and other modifications.
Intrusion Detection
Multilin’s family of protection and control products can also help enable your security perimeter and intrusion detection programs. By providing essential alarming and logging of critical events, Multilin devices can help you detect potential breaches within your system and allow you to respond quickly and effectively. Specifically, unsuccessful access attempts are logged, alarmed, and lead to potential attackers being locked out. This ensures the reliability of your system during questionable activity.control factor that can lock or unlock a device for configuration changes and other modifications.
Auditing and Reporting
With the Security Audit Trail reporting feature and support for Event logging of key
activities such as configuration changes, Multilin devices can help ensure device and
protection system integrity, and perform forensic auditing of activities and changes
for compliance.
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 lifecycle costs. Learn More
Multilink UR Ethernet Switch Module
The UR Switch Module simplifies Ethernet networking in Substations and Industrial environments and can save users as much of 70% of the entire cost associated with installing Ethernet networks. Learn More
Security Enhancements - Enabling NERC CIP compliance:
- Dual Permission access requiring live permission from both the user and from SCADA operators before settings can be changed or commands can be given to the relay
- Logging of user commands in the security audit trail relay - creates a record and sequence of events for troubleshooting and security auditing
Ambient Temperature Monitoring:
- Provides alarms when the ambient temperature exceeds hot extreme
New 2nd Differential Zone gives additional protection flexibility to the B30
The 2nd differential zone is identical to the 1st one and enables the B30 to suit a larger number of bus bar schemes such as separate small bars, split bars or single bus bar with supervision zone (firmware version 5.70)
Protection & Control 
