Description

echnical Specifications

• Product Model: ABB REF620C_F NCFNAAAAABC2DNN1XF
• Brand: ABB
• Warranty: One Year Full Coverage Warranty
• Working Voltage: 24–250V DC / 100–240V AC Universal Auxiliary Supply
• Working Temperature: -40°C to 70°C
• Storage Condition: -50°C to 85°C, Non-condensing Humidity
• Interface Type: Terminal blocks, Ethernet, IEC 61850, GOOSE, IEC 60870-5-103, Modbus, DNP3
• Anti-interference Level: Industrial EMC Anti-interference Standard

Product Overview

The ABB REF620C_F NCFNAAAAABC2DNN1XF feeder protection and control IED belongs to ABB Relion 620 series, Type C configuration. It is a compact numerical relay dedicated for medium voltage cable and overhead feeders in utility and industrial distribution substations. It integrates comprehensive protection, circuit breaker bay control, measurement, fault recording and condition monitoring. It supports directional/non-directional overcurrent, sensitive earth fault, thermal overload, phase unbalance and auto-reclosing functions, with optional arc flash protection and fault location capability. It adapts to radial, ring and meshed networks including systems with distributed generation. Built with withdrawable plug-in hardware, it delivers stable long-term operation inside switchgear cabinets, resolving protection failure and monitoring loss caused by aging or damaged original relays. Manufactured to strict power industry standards and fully tested, it acts as a reliable replacement spare part for medium voltage distribution automation maintenance and fault repair.

Core Application Advantages

• Low Failure Rate Operation: Constructed with industrial-grade materials and circuitry, delivering strong stability and durability to cut recurring maintenance expenses.
• Fast Fault Recovery: Drawout plug-in design enables quick installation and removal. Engineers can finish system repairs rapidly to minimize power outage losses.
• Wide System Compatibility: Fully compatible with original ABB Relion 620 substation automation architecture. Supports multiple communication protocols for seamless SCADA connection, no complex program adjustments needed after installation, bringing zero adaptation cost.

Typical Application Cases

• Industrial System Emergency Maintenance: Emergency replacement of faulty feeder protection IEDs in medium voltage substations to restore feeder protection and bay control rapidly.
• Long-term Spare Part Reserve: Kept as regular inventory for power plants and distribution substations, easing procurement bottlenecks and long lead times of original imported spare parts.
• Automation System Upgrade: Matches legacy and new switchgear during power distribution network reconstruction and smart substation transformation.