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ABB Protection Relays - Intermediate Technical Reference
Document Type: Intermediate | Revision: INT-01 | Date: 2025-12-24
For Internal Engineering Review Only | Not for Customer Distribution
RET615_ANSI_5.0_FP1_pg_1MAC202589-PG_ENa.pdf
REU615_pg_1YZA000093-C_CNc.pdf
RET620_pg_1YHT904957-D20-cn_CNa.pdf
RET615B
Part Code: HCTBBABAABC2DNN11E
Product Type
Transformer Protection Relay
Core Function
Comprehensive protection for power transformers (HV/MV/LV) including overcurrent, earth fault, differential & thermal protection
Communication
IEC 61850 (MMS/GOOSE), DNP3, Modbus TCP/IP, IEC 60870-5-103
Power Supply
100-240V AC / 110-250V DC (dual redundant inputs)
Certifications
IEC 61850-3, IEC 60255-22-4 (EMC), SIL 2 (IEC 61508)
Configuration Notes
HCTBBABAABC2DNN11E: 8 DI/8 DO, Ethernet + RS-485, 2nd harmonic restraint, no GPS
REU615
Part Code: HBUAEAADNFA1BNN11G
Product Type
Feeder & Motor Protection Relay
Core Function
Protection and control of medium voltage feeders, motors and capacitor banks (overcurrent, undervoltage, phase imbalance)
Communication
IEC 61850, DNP3, Modbus RTU/TCP, IEC 60870-5-101/104
Power Supply
24-48V DC / 100-125V DC / 100-240V AC
Certifications
IEC 61850-3, IEC 60255-1, UL 891, CSA C22.2 No. 255.1
Configuration Notes
HBUAEAADNFA1BNN11G: 16 DI/16 DO, analog inputs (4-20mA), motor protection profile, Ethernet interface
RET620
Part Code: NBTNAAAANFA1BNN11G
Product Type
Transmission Line Protection Relay
Core Function
Distance, differential and directional overcurrent protection for HV/EHV transmission lines (up to 765kV)
Communication
IEC 61850 (GOOSE/SMV), Synchrophasor (IEEE C37.118), DNP3, Modbus
Power Supply
100-240V AC / 110-250V DC (redundant, fault-tolerant)
Certifications
IEC 61850-3, IEC 60255-22-2, SIL 3 (IEC 61508) for protection functions
Configuration Notes
NBTNAAAANFA1BNN11G: 12 DI/12 DO, GPS time synchronization, 8 analog inputs, line differential protection enabled
Intermediate Document Disclaimer
This is an intermediate technical document for ABB RET615B (HCTBBABAABC2DNN11E), REU615 (HBUAEAADNFA1BNN11G), and RET620 (NBTNAAAANFA1BNN11G) protection relays. All specifications are preliminary and subject to validation by ABB Power Grids engineering team.
Part code configurations (e.g., HCTBBABAABC2DNN11E, HBUAEAADNFA1BNN11G, NBTNAAAANFA1BNN11G) are subject to change based on customer customization requests and ABB production revisions.
Important: This document shall not be used for final system design, procurement, or customer quoting. For official, validated datasheets and configuration guides, refer to ABB’s Power Grids Product Catalog (Document ID: 3BSE088598). Unauthorized use may lead to incorrect system integration and void product warranty.
ABB Power Grids © 2025 | All Rights Reserved
Document ID: ABB-RELAY-INT-20251224 | Internal Use Only
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