ABB RET670 1MRK004816-AB – Technical Overview
The ABB RET670 (Relion® 670 Series) is a line differential protection relay designed for high-voltage transmission and distribution networks. It provides advanced protection, automation, and monitoring for power systems, ensuring grid reliability and fault resilience. The variant 1MRK004816-AB includes specific hardware/software configurations tailored for critical infrastructure applications.
Technical Parameters
|
Category
|
Specification
|
|---|---|
|
Rated Voltage
|
110–690 V AC (auxiliary supply)
|
|
Current Inputs
|
5 A or 1 A (configurable), 3-phase + neutral
|
|
Frequency
|
50/60 Hz (±5%)
|
|
Protection Functions
|
Line differential (87L), overcurrent (50/51), directional OC (67), distance (21), earth fault (50N/51N), auto-reclosing (79), breaker failure (50BF)
|
|
Communication Interfaces
|
IEC 61850 (GOOSE, MMS), IEC 60870-5-103, Modbus RTU (RS-485), Ethernet (RJ45, FO)
|
|
Binary I/O
|
24 programmable inputs, 10 relay outputs (250 V AC/DC, 5 A)
|
|
Measurement Accuracy
|
±0.5% for current, ±1% for voltage
|
|
Event Recording
|
1,000 event records with time synchronization (IEEE 1588)
|
|
Operating Temperature
|
-40°C to +70°C
|
|
Housing
|
19-inch rack-mountable (4U height), IP40 protection
|
|
Standards
|
IEC 60255, IEEE C37.90, IEC 61850 Ed.2, IEC 61000 (EMC)
|
Functional Features
- Line Differential Protection (87L)
- High-speed differential protection using sampled values or GOOSE messaging for fault detection.
- Adaptive compensation for line capacitance and CT saturation.
- Distance Protection (Zone 1–4)
- Multi-zone impedance-based protection with quadrilateral or mho characteristics.
- Power swing blocking (PSB) and out-of-step tripping (OST).
- Auto-Reclosing (79)
- Programmable reclosing sequences for transient fault recovery (up to 4 shots).
- Synchrophasor Measurement
- Supports PMU (Phasor Measurement Unit) functionality for wide-area monitoring (IEEE C37.118).
- Advanced Communication
- IEC 61850 protocol for seamless integration with substation automation systems (SAS).
- Redundant Ethernet ports for network reliability.
- Disturbance Recording
- High-resolution fault recording (up to 256 samples/cycle) for post-event analysis.
- Human-Machine Interface (HMI)
- Graphical LCD display with multilingual support for local configuration and diagnostics.
- Front-panel USB port for settings transfer and firmware updates.
- Cybersecurity
- Role-based access control, encrypted communications, and compliance with IEC 62351.
Typical Applications
- Transmission lines (overhead, underground, or mixed).
- Substation automation (protection, control, and monitoring).
- Renewable energy integration (wind/solar farm grid connections).
- Industrial power networks (steel, mining, oil & gas).
Compliance & Certifications
- Standards: IEC 60255, IEEE C37.90, IEC 61850, IEC 61000-4 (EMC).
- Environmental: RoHS, REACH.
- Safety: UL 508, CE Mark.
Conclusion
The ABB RET670 1MRK004816-AB is a versatile and robust protection relay engineered for modern power grids. Its combination of high-speed differential protection, synchrophasor capabilities, and IEC 61850 compliance makes it ideal for utilities and industries requiring secure, adaptive, and interoperable grid solutions. The modular design and extensive diagnostics further enhance its suitability for critical infrastructure applications.
There are no reviews yet.