I. Product Description
Complete Order Code: NBMNAAABNEC1BNN1XF
Series： ABB Relion™ REF620E_F Medium Voltage Feeder Integrated Protection and Monitoring Device (Digital Substation Relay Protection)
Product Category： Microcomputer Protection Relay / Line Protection Monitoring Device
Applicable Scenarios： 6kV/10kV/20kV/35kV Medium Voltage Distribution Network Feeder， Plant Power Outlet Protection
Long Code Segmentation (NBMN AAAB NEC1 BNN 1X F)
1. NBMN – Cabinet / Hardware Structure
NBMN： Standard 6U Plug-in Cabinet Installation， Front LCD Human-Machine Interface， Standard I/O Backplane， No Arc Flash Collection Expansion
Comparison： NBFN is a cabinet with arc flash protection expansion
2. AAAB – Protection Function Package (Full Function Feeder Version)
AAAA/AAAB： Standard Full Feeder Protection Logic
Three-stage Overcurrent Protection， Zero Sequence Ground Protection， Multi-Frequency Conductance Ground Fault
Overload， Low Voltage， Over Voltage， Undervoltage Protection
Automatic Reclosing， Fault Recording， Fault Location， Energy Metering
Low Frequency Load Shedding， Reverse Power Protection (Plant Power Scenario)
3. NEC1 – I/O Points + Communication Hardware Configuration
NE： I/O Configuration： 16 Digital Inputs DI / 8 Digital Outputs DO
C1： Communication Module Configuration
Dual Gigabit Ethernet (IEC 61850 Ed2， Supports HSR/PRP Redundancy)
One RS485 Serial Port (IEC 60870-5-103 / Modbus RTU)
Supports IEEE 1588 V2 High Precision Time Synchronization
4. BNN – Auxiliary Working Power Supply
BNN： General Wide Range AC/DC Power Supply
Power Supply Range： 110~240V AC / 110~240V DC
Power Consumption ≤ 25W， General for Substation DC Screen / AC Control Power Supply
5. 1X – Human-Machine Interface HMI
1X： Standard Configuration for the Entire Machine： Color LCD Large Screen + Physical Operating Keys， Local Fault Viewing， Setting Values， Recording， Electrical Measurement
Screenless Version Code is 0X， Only Remote Back-end Operation
6. F – Firmware Version Suffix
F： Original Factory Standard Stable Firmware Version， Supports Latest IEC61850， Fault Recording， Power Quality Analysis Function
Core Hardware and Functions
Integrated Protection and Monitoring
Protection Trip + Current Voltage Collection + Four Remote (Telemetry / Remote Signal / Remote Control / Remote Adjustment) + Fault Recording + Event Sequence Recording SOE
Full Coverage of Communication Protocols
IEC61850， Modbus TCP/RTU， DNP3， IEC103， Connect to ABB MicroSCADA， SYS600 and Third-Party Integrated Automation System
High Precision Synchronization
PTP 1588 Time Synchronization， SOE Resolution ≤ 1ms， Meeting Digital Substation Timing Requirements
Installation Method
Standard 6U Plug-in Cabinet， 19-inch Switch Cabinet Rail Installation， Supports Power-off Plug-in Replacement of Spare Parts
Application Industries
Urban Distribution Stations， Industrial Factory 10kV Distribution Rooms， Power Plant Plant Power， Metallurgy / Chemical / Mining Medium Voltage Outlets
Feeder Protection Monitoring of Wind Power， Photovoltaic Boosting Station
Purchase and Replacement Instructions
Supply
New Original： Factory 12-month Warranty， Order Cycle 4~8 Weeks
Disassembled Test Piece： Abundant in Stock， Warranty 3~6 Months
Replacement Notes Each alteration of the alphanumeric code will affect the hardware / functionality / communication. It is not allowed to directly replace different suffix models of NBFN and NBMN; replacement requires checking the I/O points, network ports, power voltage, and HMI screen configuration.
Common supporting accessories
Backplane terminal block, communication network port module, power plug-in, operation panel button assembly
Differentiation of similar models within the same series
NBMNAAABNEC1BNN1XF: Standard 6U, no arc light, 16DI/8DO, dual network ports, wide-range AC/DC, with LCD screen
NBFNAAAANDC1BNN1XF: Extended chassis with arc light protection, all other I/O and communication are consistent
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