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ABB RET670 1MRKO02816-AC｜Transformer Protection Relay｜
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- Series Affiliation
ABB Relion® RET670 Transformer Protection IED – ANSI Configuration Version, designed for North American and ANSI-standard applications, providing comprehensive transformer protection, control, and monitoring.Core Protection Functions (ANSI)
Transformer Differential Protection (87T)
Phase Overcurrent Protection (50/51)
Ground / Neutral Overcurrent Protection (50N/51N)
Thermal Overload Protection
Overvoltage / Undervoltage Protection (59 / 27)
Circuit Breaker Failure Protection (50BF)
CT / PT Circuit Supervision and Disconnection Detection
Automatic CT ratio matching and transformer vector group compensation
Communication and Monitoring
Native IEC 61850 support, including GOOSE and Sampled Values (SV)
Additional communication protocols:
Modbus
DNP3
IEC 60870-5-103
Dual Ethernet ports supporting PRP / HSR network redundancy
Time synchronization via IEEE 1588 v2 (PTP)
Integrated fault recording, event recording, and electrical energy measurement
Typical Applications
North American standard industrial and utility substations
Protection of two-winding and three-winding power transformers
Protection, control, and automation for power systems and energy infrastructure
Key Technical Parameters
Parameter Specification
Model RET670 (1MRK002816-AC)
Type ANSI Transformer Protection and Control IED
Rated Power Supply Wide range 90–250 V DC/AC; optional 24 V DC / 230 V AC
CT / PT Ratings CT: 1 A / 5 A; PT: 100 V / 110 V (configurable)
I/O Configuration Up to 32 digital inputs and 32 digital outputs, with multiple analog measurement channels
Communication Interfaces Dual Ethernet (PRP/HSR), RS485, USB
Operating Temperature −25 °C to +55 °C
Storage Temperature −40 °C to +85 °C
- Series Affiliation
By structuring the information in this manner, the article provides a clear and organized understanding of input channels, transducer supply, and communication implementations in distributed control systems.
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