Description
REF620 is a dedicated feeder management relay for protection, control, measurement and supervision in utility and industrial power distribution systems, including radial, looped and meshed networks, with or without distributed power generation. Compact and versatile feeder protection relay solution with integration of protection, control, monitoring and supervision in one relay. REF620 is a member of ABB's Relion® family and part of its 620 protection and control product series. Scope • Protection for medium voltage substation incoming and outgoing feeders Key benefits • Extensive protection and control functionality, either with sensors or conventional instrument transformers • Functional scalability and extensive possibilities to easily tailor configurations to application-specific requirements • Withdrawable plug-in unit design for swift installation and testing • Large graphical display for showing customizable SLDs, accessible either locally or through an easy-to-use web-browser-based HMI • Extensive life-cycle services Key features • Wide range of protection and control functionality for incoming and outgoing feeders • Extensive earth-fault protection portfolio with unique multifrequency admittance-based protection for higher sensitivity and selectivity • Several optional functionality packages – advanced and fast fault location of short circuits and earth faults, interconnection protection for distributed power generation, capacitor bank, basic motor and arc protection • Supports native IEC 61850 Editions 1 and 2, including redundancy HSR and PRP, GOOSE messaging and IEC 61850-9-2 LE for less wiring and supervised communication • Supports Modbus, DNP3 and IEC 60870-5-103 communication protocols and for different time synchronization methods, including high-accuracy time synchronization via IEEE 1588 V2 Precision Time Protocol
Unique REF620 ANSI features − Six setting groups − Drawout design − Underground, overhead cable fault detection (CFD) − High-speed (< 1 ms) outputs − High impedance (HIZ) fault detection − Arc flash detection (AFD) − Phase step distance protection − Power quality − Ring-lug terminals for all inputs and outputs − Large, easy to read LCD screen − Programmable push-buttons − Environmentally friendly design with RoHS Compliance The REF620 provides main protection for overhead lines,cable feeders, and busbar systems of distribution substations.It can be applied for protection and control of grounded andungrounded distribution systems. It offers support for singlebreaker, one-and-half breaker and double breaker feeder configurations. Flexible order coding allows for choosing current-onlyor current-and-voltage configurations to best fit your distributionfeeder application needs. The REF620 is the most powerful, advanced and simplestfeeder protection relay in its class, perfectly offering time andinstantaneous overcurrent, negative sequence overcurrent,phase step distance, phase discontinuity, breaker failure, thermal overload, and voltage metering and protection. The relayalso features high impedance fault (HIZ) and sensitive earthfault (SEF) protection for grounded and ungrounded distribution systems. Also, the relay incorporates a flexible three-phasemulti-shot auto-reclose function for automatic feeder restorationin temporary faults on overhead lines.
Enhanced with safety options, the relay offers a three-channelarc-fault detection system for supervision of the switchgear. TheREF620 also integrates basic control functionality, which facilitates the control of up to 2 circuit breakers via the relay’s frontpanel human machine interface (HMI) or remote control system.To protect the relay from unauthorized access and to maintainthe integrity of information, the relay has been provided with afour-level, role-based user authentication system, with individualpasswords for the viewer, operator, engineer, and administratorlevels. The access control system applies to the front panelHMI, embedded web browser based HMI, and thePCM600, Protection and Control IED Manager. REF620 genuinely supports the new IEC 61850 standard forinter-device communication in substations. The relay also supports the industry standard DNP3 and Modbus® protocols. Foraccurate time stamping, REM620 supports synchronization overEthernet using SNTP or over a separate bus using IRIG-B. Standard configurations The REF620 relay main application is feeder protection andcontrol and offers three standard configurations whose relayfunctions and features are based on the needs of the application. See Tables 1 and 2 for details. Configuration A comprisesprotection scheme useful in enhanced utility and industrialfeeder protection with single breaker . Configuration B includesfunctions and features for comprehensive feeder protection andcontrol applications in with one-and-half breaker configuration .Configuration C includes functions and features for comprehensive feeder protection and control applications in with 2 breakerconfiguration.
The company focuses on DCS, PLC, robot, large servo four systems
The main products are various modules/cards, controllers, touch screens, servo drivers Company advantage: Supply imported original products, professional production of spare parts One year warranty, fast delivery time, complete supply !！！ ① 24 hours email response (12 hours); ② For shipment outside Asia, please contact the seller.
【 Disclaimer 】 We sell new products and discontinued products, independent channels to buy such special products. Guizhou Yuanmiao Automation Equipment Co., Ltd. is not an authorized distributor, dealer or representative of the products featured on this website. All product names/product images, trademarks, brands and microlabels used on this Website are the property of their respective owners. Descriptions, depictions or sales of products with such names/images, trademarks, brands and logos are for identification purposes only and do not imply any association or authorization with any rights holder. This article is from the official website of Guizhou Yuanmiao Automation Equipment Co., LTD. Please attach this link:http://www.ymdcs.com/ABB/
