ABB REF542plus 76A2NFFF34NWS21 REF542plus Numerical Feeder Protection Relay

Description

​​Product Name:​​ REF542plus 76A2NFFF34NWS21

​​Manufacturer:​​ ABB Group

​​Product Series:​​ REF542plus Numerical Feeder Protection Relay

​​Certification:​​ IEC 60255, UL 508, CE, RoHS, SIL 2 (IEC 61508)

​​Product Overview​​

The ​​ABB REF542plus 76A2NFFF34NWS21​​ is an advanced ​​numerical feeder protection relay​​ designed for medium-voltage distribution networks. Combining comprehensive protection functions with intelligent control capabilities, it ensures reliable operation and fault management in utility, industrial, and commercial power systems. Its modular design and user-friendly interface make it ideal for modern grid applications.

​​Key Features​​

​​Comprehensive Protection Functions​​

​​Overcurrent Protection:​​ Definite/Inverse Time (DTL/IDMT) with IEC 60255-151 compliance.

​​Earth Fault Protection:​​ Directional/non-directional with high sensitivity.

​​Additional Protections:​​ Thermal overload, motor stall, and breaker failure.

​​Advanced Communication​​

​​Protocols:​​ IEC 61850 Ed. 2 (GOOSE, MMS), Modbus RTU/TCP, DNP3.0.

​​Ethernet Ports:​​ Dual 100BASE-FX/TX ports with PRP/HSR redundancy support.

​​User-Friendly Interface​​

​​Local HMI:​​ Large graphical LCD with multilingual support and intuitive navigation.

​​Remote Configuration:​​ Via ABB’s ​​Protection and Control IED Manager​​ software.

​​Robust Design for Harsh Environments​​

​​Operating Temperature:​​ -40°C to +70°C.

​​Enclosure:​​ IP54-rated (front panel IP65).

​​EMC Immunity:​​ Complies with IEC 60255-26 (Level 4).

REF542PLUS-1VCR007346

​​Cybersecurity & Compliance​​

​​Secure Access:​​ Role-based authentication and SSH/SSL encryption.

​​Standards:​​ IEC 62351, NERC CIP.

​​Technical Specifications​​

​​Applications​​

​​Utility Substations:​​ Feeder protection and automation.

​​Industrial Plants:​​ Motor and transformer protection.

​​Renewable Energy:​​ Solar/Wind farm grid connection.

​​Railway Electrification:​​ Traction power supply systems.

​​Configuration & Integration​​

​​Software Tools:​​ ABB ​​Protection and Control IED Manager​​ for full lifecycle management.

​​Logic Customization:​​ Supports ​​CFC​​ (Continuous Function Chart) programming.

​​Cyber Security:​​ Integrated firewall and event logging for compliance.

​​Benefits​​

​​Reliability:​​ MTBF > 50 years per IEC 61709.

​​Flexibility:​​ Modular hardware and software for tailored solutions.

​​Future-Proof:​​ Firmware-upgradable to support evolving grid standards.

Please contact Sunny sales@xiongbagk.cn for the best price.

➱ sales manager: Sunny
➱ email mailto: sales@xiongbagk.cn
➱ Skype/WeChat: 18059884797
➱ phone/Whatsapp: + 86 18059884797
➱ QQ: 3095989363
➱ Website:www.sauldcs.com