Description
ABB RED670 1MRK002810-AG | Relion 670 Line Differential Protection IED
Product Introduction
Transmission-line protection has little tolerance for configuration errors. CT ratios, communication channels, trip logic, breaker arrangements, and remote-end synchronization all have to agree before a differential scheme can be commissioned. The ABB RED670 1MRK002810-AG is a Relion 670 Series line differential protection IED designed for protection, control, and monitoring of overhead lines and cables. ABB documentation identifies this exact ordering number under RED670 product version 2.2.
The ABB RED670 1MRK002810-AG belongs to a protection platform that can combine line differential protection with distance, overcurrent, earth-fault, voltage, frequency, autoreclosing, synchrocheck, monitoring, and station-communication functions, depending on the ordered configuration. The important procurement point is that RED670 is a configurable protection IED; the generic family name does not by itself define every installed function or hardware option.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | RED670 |
| Ordering Number | 1MRK002810-AG |
| Manufacturer | ABB / Hitachi Energy |
| Product Family | Relion 670 Series |
| Product Version | 2.2 |
| Product Type | Line differential protection IED |
| Configuration | * 2.2 / F00 / X00 |
| Primary Protection | Line differential protection |
| Application | Overhead lines and cables |
| Differential Protection | Phase-segregated current differential protection |
| Distance Protection | Available in applicable configurations |
| Current Protection | Phase and residual overcurrent functions available |
| Voltage Protection | Over/undervoltage functions available |
| Frequency Protection | Under/overfrequency functions available |
| Control Functions | Synchrocheck, synchronizing and autorecloser functions available |
| Station Communication | Configuration-dependent |
| Remote-End Communication | Configuration-dependent |
| Engineering Tool | PCM600 |
| Documentation | Product Guide / Application Manual |
The exact 1MRK002810-AG ordering number is documented under the 2.2 product definition with configuration alternative F00 and ACT configuration X00. The ordering documentation then expands the IED into individual functional and hardware selections.
Major Features and Engineering Advantages
1. Dedicated line differential protection
The core function of is differential protection for transmission and sub-transmission lines. The protection compares current information from the protected line ends and is intended to distinguish internal faults from external faults.
ABB documentation describes the differential algorithm as providing high sensitivity for internal faults while maintaining stability for external faults. Current samples from the associated CT inputs are exchanged between the IEDs forming the differential scheme.
This makes fundamentally different from a conventional overcurrent relay. The communication path between line terminals is part of the protection scheme and has to be engineered accordingly.
RED670 1MRK002810-AG
2. Multi-terminal line applications
configurations support more than a simple two-terminal line arrangement. ABB documentation describes six-terminal versions for applications including multi-terminal lines with up to five terminals, depending on the selected configuration.
That capability becomes important on transmission networks with complex breaker-and-a-half or multi-terminal arrangements. The actual terminal count must still be confirmed from the complete ordering code.
3. Distance protection as backup
can combine line differential protection with high-speed distance protection. The documented function set includes quadrilateral and mho distance characteristics, along with phase-selection functions.
This allows the IED to participate in a broader line-protection scheme rather than operating as a differential-only device.
4. Integrated protection and control functions
Depending on configuration, includes functions such as phase overcurrent, directional phase overcurrent, residual overcurrent, under/overfrequency, voltage protection, synchrocheck, synchronizing, and autoreclosing.
For an existing substation, this can reduce the number of separate protection/control devices required. That said, the installed function set must be checked from the actual configuration file or complete ordering code rather than inferred from the name alone.
5. Modern substation communication
The Relion 670 platform supports IEC 61850-based station communication, while ABB material also documents DNP3.0 and legacy protocols such as LON, SPA, and IEC 60870-5-103 for applicable configurations.
Communication capability is configuration-dependent, so procurement should verify the actual communication module and protocol requirements rather than assuming every contains the same interface set.
Application Scenarios & Pain Points
Transmission Line Protection
The principal application is protection of overhead transmission lines and power cables. combines line differential protection with additional backup and control functions depending on configuration.
Multi-Terminal Lines
Complex transmission arrangements can require differential protection across several line terminals. supports configurations intended for multi-terminal applications, subject to the selected hardware and software configuration.
Breaker-and-a-Half Substations
The 670-series architecture includes configurations for multiple breaker arrangements and single- or three-phase tripping. The exact configuration should be checked against the station single-line diagram before replacement.
Protection System Retrofit
For an existing Relion installation, the exact ordering number is particularly important. 1MRK002810-AG identifies the base 2.2 configuration, but a field unit can have additional configuration information defining its actual I/O, communication, protection, HMI, and power-supply options.
Field note: When replacing a , matching the front-panel model label is only the first check. The PCM600 project, hardware configuration, firmware version, communication arrangement, CT/VT wiring, and protection settings should be compared before energization.
Related Products
- REL670 — Relion 670 Series line distance protection IED; primarily associated with distance protection rather than ‘s core line differential function.
- RET670 — Relion 670 Series transformer protection IED.
- REC670 — Relion 670 Series bay control IED.
- REL650 — Relion 650 Series line distance protection platform.
- RED615 — Relion 615 Series line differential protection platform for applications with a different hardware/configuration architecture.
- Version 1.x — Earlier product generations; firmware and hardware compatibility must be checked.
- Version 2.0 — Earlier 2.0 generation documented before the 2.2 configuration.
- Version 2.2 — The product version associated with the supplied 1MRK002810-AG ordering number.
These are related protection products rather than automatic substitutes. In particular, a REL670 or RED615 should not be treated as a drop-in replacement for a simply because both are used for line protection.
Engineer’s Guide — Field Pitfalls to Avoid
1. Do not buy by “” alone.
The ordering structure contains configuration selections for protection functions, communication, power supply, HMI, analog system, binary I/O, and other hardware. The complete configuration is what determines actual functionality.
2. Verify the exact ordering number.
For this unit, the documented ordering number is 1MRK002810-AG. Keep that number in the procurement record rather than shortening it to “.”
3. Check the PCM600 configuration.
A replacement IED may have the same base model but a different hardware or application configuration. Protection settings and logic should be backed up and reviewed before replacing the installed device.
4. Do not assume every communication interface is included.
IEC 61850, DNP3, SPA, LON, and IEC 60870-5-103 capabilities vary with configuration and generation. Confirm the actual communication modules and protocol requirements from the installed relay.
5. Check CT/VT arrangement carefully.
configurations can differ in analog input arrangements. CT ratios, VT connections, terminal assignments, and the number of protected line ends must match the protection design.
6. Confirm firmware compatibility.
For a protection IED, firmware is not a cosmetic revision. Application configuration, communication behavior, engineering-tool compatibility, and protection functions can depend on the installed product version.
7. Do not treat a similar 670-series relay as a direct substitute.
REL670, , RET670, and REC670 have different primary protection/control roles. A physically compatible relay is not necessarily functionally equivalent.
8. Verify actual inventory condition.
For a used or refurbished , request the nameplate photograph, serial information, hardware revision, firmware/product version, and available configuration data. A functional test report is more useful than a generic statement that the relay is “tested.”
FAQ
What is ABB 1MRK002810-AG?
It is an ABB Relion 670 Series line differential protection IED, with the exact ordering number 1MRK002810-AG. The documented product version is 2.2.
What does protect?
is designed primarily for line differential protection of overhead lines and cables. Depending on configuration, it can also provide distance, overcurrent, earth-fault, voltage, frequency, and other protection functions.
Is a PLC?
No. It is a power-system protection and control IED, not a general-purpose PLC. Its processing, protection algorithms, communication architecture, and configuration environment are designed around electrical protection applications.
Does support IEC 61850?
The Relion 670 platform supports IEC 61850 station communication in applicable configurations. ABB material also identifies DNP3.0 and other communication protocols for applicable 670-series configurations. The actual communication hardware and protocol options must be verified for the individual IED.
Can replace REL670?
Not automatically. ‘s principal function is line differential protection, while REL670 is primarily a line distance protection IED. Both belong to the 670 family, but their protection architectures and application functions differ.
What should be checked before replacing 1MRK002810-AG?
Check the complete ordering code, product/firmware version, PCM600 project, protection settings, CT/VT configuration, binary I/O, communication modules, station protocol, HMI arrangement, and power supply. For a critical transmission protection application, these checks should be completed before applying control power to the replacement IED.
Is 1MRK002810-AG the complete ordering number?
For the documented 2.2 base ordering entry, 1MRK002810-AG is explicitly listed as the ordering number. The full delivered IED can still contain additional configuration selections that define its specific hardware and functionality.
