REF620C_F NCFNAAAAABC2DNN1XF: Intelligent Feeder Management for Medium-Voltage Systems

Description

Application Scenarios

In a large,unmanned electrical substation that powers a critical manufacturing facility,the feeder network is the lifeline of operations.A fault—such as a short circuit or earth fault on a cable—must be isolated instantly to prevent damage to expensive equipment and a widespread power outage.The ABB REF620 relay,with its specific configuration REF620C_F NCFNAAAAABC2DNN1XF,is installed on each feeder to handle this task.It continuously monitors the current and voltage parameters.When a fault occurs,the REF620 instantly detects the anomaly,uses its pre-programmed logic to determine the exact type and location of the fault,and sends a high-speed trip command to the circuit breaker,isolating the faulty section in milliseconds.The relay addresses the critical pain points of power grid reliability and safety by providing a robust,autonomous,and intelligent protection solution that operates far faster and more reliably than traditional electromechanical relays.

Parameter

Main Parameters Value/Description

Product Model REF620

Manufacturer ABB

Product Category Feeder Protection and Control Relay(IED)

Full Part Number REF620C_F NCFNAAAAABC2DNN1XF

System Compatibility ABB Relion®620 series

Core Protection Functions Overcurrent,Earth-Fault,Phase Unbalance,etc.

Communication Protocols IEC 61850(including GOOSE messaging),Modbus,DNP3

Local HMI Integrated LCD screen for local monitoring and parameter settings

Installation Panel or rack-mounted

Power Supply Auxiliary power supply,e.g.,24-240 V AC/DC

Environmental Adaptability Designed for substation environments

Configuration Specific to NCFNAAAAABC2DNN1XF options

Technical Principles and Innovative Values

Integrated Multi-Functionality:The REF620 is a single device that replaces a host of older,individual relays.It integrates a comprehensive suite of protection functions(e.g.,overcurrent,earth-fault),control functions(e.g.,circuit breaker control),and monitoring capabilities(e.g.,event logs,disturbance records).This integration simplifies switchgear design,reduces wiring,and lowers overall system cost.

High-Speed Communication via IEC 61850:A key innovation of the REF620 is its support for the IEC 61850 protocol,particularly GOOSE(Generic Object Oriented Substation Event)messaging.This enables high-speed,peer-to-peer communication between relays,allowing for complex and coordinated protection schemes that operate in sub-milliseconds.This is far superior to traditional hard-wired solutions and is a cornerstone of modern smart grid applications.

User-Friendly Configuration and Diagnostics:The REF620 is supported by ABB’s powerful PCM600 software tool,which provides a user-friendly environment for configuration,parameter setting,and commissioning.The relay’s integrated HMI with a large LCD screen offers clear status indications and allows for local parameter adjustments and fault analysis,which simplifies maintenance and reduces the need for specialized tools in the field.

Application Cases and Industry Value

In a new wind farm project,the ABB REF620 relays were selected to protect the medium-voltage collection system feeders.The challenge was to ensure that a fault in one feeder did not cascade to others while providing accurate data for grid optimization.The REF620C_F NCFNAAAAABC2DNN1XF relays,configured for IEC 61850,were deployed across the substation.Their ability to communicate via GOOSE messaging enabled a fast and reliable interlocking scheme between feeders.In one instance,a lightning strike caused a temporary fault.The REF620 detected the fault,tripped the correct circuit breaker,and the system isolated the problem without affecting the rest of the wind farm.The detailed event logs and disturbance records collected by the REF620 allowed engineers to quickly analyze the event and verify the relay’s successful operation,which contributed to an increase in the wind farm’s overall uptime and power quality.

Related Product Combination Solutions

The REF620 is part of a larger ecosystem of substation automation.It is commonly used with:

REJ603:A simple,single-function feeder protection relay for less complex applications.

REL670:A more advanced,high-end line protection relay for transmission-level protection.

REC650:A bay control IED from the same Relion®family,used for controlling multiple devices within a substation bay.

PCM600:The PC-based software tool for engineering,configuration,and monitoring of all ABB Relion®relays.

ABB 620 Series:Other relays in the same family,such as the REM620(motor protection)or RET620(transformer protection).

ABB Circuit Breaker:The REF620 is directly connected to and controls the tripping mechanism of a medium-voltage circuit breaker to isolate faults.

Installation,Maintenance,and Full-Cycle Support

Installing the REF620 is a straightforward process for qualified technicians.The relay can be mounted on a panel or in a rack,and its terminal blocks are designed for easy and secure wiring.The initial configuration is done via the PCM600 software,where the specific settings for the REF620C_F NCFNAAAAABC2DNN1XF are loaded.

For maintenance,the REF620 is designed for high reliability with self-supervision features.It continuously monitors its own health and provides alerts for any internal issues.In the event of a fault,the front-panel HMI and event logs provide all the necessary information for rapid diagnosis.Our company offers full-cycle support for the REF620,including expert guidance during commissioning,training on the PCM600 software,and access to genuine replacement parts.We understand the mission-critical role of protection relays,and our commitment is to provide the expert knowledge and resources needed to keep your power system reliable and safe.

ABB 5SHY4045L0006 3BHB030310R0001 3BHE039203R0101 GVC736CE101 5SHY4045L0006 3BHB030310R0001 3BHE039203R0101 GVC736CE101 ABB GRID BREAKER UNIT GBU72 3BHE055094R0002 3BHE031197R0001 3BHB030310R0001 In stock!!! Interested parties please inquire