REF620E F NBFNAANNNCC1BNN1XF REF620 REF615 专用馈线IED

REF620E_F NBFNAANNNCC1BNN1XF

The REF620 is a dedicated feeder IED perfectly aligned for the protection, control, measurement and supervision of utility substations and industrial power systems. REF620 is a member of ABB’s Relion® family and a part of its 620 protection and control product series. The 620 series IEDs are characterized by flexibility and performance for demanding utility distribution and industrial applications. Engineered from the ground up, the 620 series has been designed to unleash the full potential of the IEC 61850 standard for communication and interoperability of substation automation devices.
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 and ungrounded distribution systems. It offers support for single breaker, one-and-half breaker and double breaker feeder configurations. Flexible order coding allows for choosing current-only or current-and-voltage configurations to best fit your distribution feeder application needs.

The REF620 is the most powerful, advanced and simplest feeder protection relay in its class, perfectly offering time and instantaneous overcurrent, negative sequence overcurrent, phase step distance, phase discontinuity, breaker failure, thermal overload, and voltage metering and protection. The relay also features high impedance fault (HIZ) and sensitive earth fault (SEF) protection for grounded and ungrounded distribution systems. Also, the relay incorporates a flexible three-phase multi-shot auto-reclose function for automatic feeder restoration in temporary faults on overhead lines.
Enhanced with safety options, the relay offers a three-channel arc-fault detection system for supervision of the switchgear. The REF620 also integrates basic control functionality, which facilitates the control of up to 2 circuit breakers via the relay’s front panel human machine interface (HMI) or remote control system.
To protect the relay from unauthorized access and to maintain the integrity of information, the relay has been provided with a four-level, role-based user authentication system, with individual passwords for the viewer, operator, engineer, and administrator levels. The access control system applies to the front panel HMI, embedded web browser based HMI, and the PCM600, Protection and Control IED Manager.