Description

The ABB 216EA62​is a specific configuration of the renowned REG670 generator protection relay,comprising the main unit 1MRB150083R1/F​and the complementary unit 1MRB178066R1/F.This IED(Intelligent Electronic Device)delivers comprehensive protection,control,measurement,and monitoring for generators and generator-transformer units in utility and industrial power plants.

Application Scenarios

In a 500MW combined-cycle gas turbine power plant,the ABB 216EA62​relay is the guardian of the main generator.It continuously monitors stator currents via dedicated CTs,detecting an evolving inter-turn fault that traditional relays might miss.Using its high-speed differential protection(87G),the 216EA62​calculates the differential current in milliseconds,comparing incoming and outgoing currents.Before the fault escalates into a catastrophic ground fault or major insulation failure,the relay’s precise algorithms initiate a trip signal to the generator circuit breaker.This action isolates the unit,preventing extensive damage to the stator core that could result in months of downtime and millions in repairs.The key value is its ability to provide selective tripping,potentially isolating only the faulty component and preserving plant stability,rather than a full unit shutdown.

Parameter

Parameter

Specification

Product Model​

216EA62​(Comprising 1MRB150083R1/F​and 1MRB178066R1/F)

Manufacturer​

ABB

Product Category​

Generator Protection IED/Bay Controller

Main Protection Functions​

Differential(87G),Stator Earth Fault(64G1,64G2),Overcurrent(51V),Loss of Excitation(40),Reverse Power(32),Overfluxing(24)

Rated Input Current​

1A or 5A(configurable)

Rated Input Voltage​

100/110V or 120V(configurable)

Communication Protocols​

IEC 61850-8-1(GOOSE/MMS),IEC 60870-5-103/104,Modbus,DNP3.0

Hardware Interfaces​

Ethernet,Fibre optic,RS485,Binary I/O

Operating Power Supply​

48-250 VDC/110-240 VAC

Operating Temperature​

-40°C to+70°C

Standards&Certifications​

IEC 60255,IEEE C37.90,IEC 61850 Ed.2,SIL 2

Technical Principles and Innovative Values

The ABB 216EA62​is engineered with several core innovations that set it apart in generator protection.

Innovation Point 1:Advanced Adaptive Differential Protection:​The relay incorporates sophisticated algorithms that remain stable during external faults with severe CT saturation,while maintaining extreme sensitivity for internal generator faults.This adaptive characteristic ensures security against false trips during system disturbances while providing high-speed clearance for internal faults.

Innovation Point 2:Integrated Synchrocheck and Automatic Synchronizer(25):​Unlike basic protection relays,the 216EA62​includes a built-in,high-accuracy automatic synchronizer.It measures voltage,frequency,and phase angle difference between the generator and the grid,issuing a close command at the precise moment to minimize mechanical stress on the turbine-generator shaft during connection.

Innovation Point 3:Comprehensive Condition Monitoring:​Beyond protection,the 216EA62​performs continuous monitoring of generator performance.It calculates and records values like有功功率(Active Power),无功功率(Reactive Power),power factor,and fault waveforms(up to 128 cycles),providing crucial data for predictive maintenance and post-event analysis.

Application Cases and Industry Value

A large hydroelectric plant was experiencing unexplained generator trips during peak load periods,leading to significant revenue loss.After replacing older electromechanical relays with the ABB 216EA62,engineers utilized its detailed fault recording and power quality analysis capabilities.During the next incident,the relay’s oscillographic report clearly showed a voltage dip originating from the grid,followed by a loss-of-field condition caused by the excitation system struggling to recover.The 216EA62​correctly identified this as a stable power swing and used its advanced logic to block an unnecessary trip,which the old relay would have initiated.The plant avoided an estimated 8-hour outage,saving over$200,000 in lost generation.The data also helped the utility identify and correct the underlying excitation system control issue.

Related Product Combination Solutions

The 216EA62​is part of a broader protection ecosystem.Key complementary products include:

Generator Transformer Relay(RET670):​Protects the step-up transformer,creating a seamless protection chain with the 216EA62.

Line Distance Relay(REL670):​Protects the outgoing transmission line,exchanging blocking signals via IEC 61850 GOOSE with the 216EA62​for coordinated system protection.

Excitation System(UNITROL®):​Interfaces with the 216EA62​for voltage regulation and protection against loss-of-excitation.

Turbine Controller:​Receives trip signals from the 216EA62​to safely shut down the prime mover upon electrical faults.

Substation Automation System(SAS):​The 216EA62​acts as a bay controller,sending all operational and event data to the SAS via IEC 61850.

Installation,Maintenance,and Full-Cycle Support

Installation of the ABB 216EA62​begins with meticulous planning of the panel layout,CT/VT wiring,and DC supply.The relay is securely mounted in the control panel,and all AC/DC and communication cables are routed and terminated according to ABB’s strict guidelines.Configuration is performed using ABB’s PCM600 software,where the protection schemes,logic,communication parameters,and measurements are set.A critical step is the primary and secondary injection testing to verify the accuracy of CT/VT connections and the correct operation of all protection functions.

Routine maintenance is simplified by the relay’s extensive self-diagnostics and event logging.The front-facing HMI provides immediate status information,while PCM600 allows for remote health monitoring and setting adjustments.Our support encompasses the entire lifecycle,from initial system design and configuration assistance to 24/7 technical support for troubleshooting.We provide firmware updates and detailed documentation.All our 216EA62​units are fully tested and come with a comprehensive warranty,ensuring your critical generation assets are protected by a reliable and fully supported system.

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