ABB REG670 1MRK002826-AC – Generator and Busbar Protection Relay
The ABB REG670 1MRK002826-AC is part of ABB’s Relion® 670 series, designed for comprehensive protection, control, and monitoring of generators, industrial power plants, and busbar systems. It combines advanced protection algorithms with robust communication capabilities, ensuring reliable operation in critical power generation and distribution networks.
Technical Parameters
|
Category
|
Specification
|
|---|---|
|
Power Supply
|
48–250 V DC / 100–240 V AC (±20%)
|
|
Current Inputs
|
1 A or 5 A (configurable), 3-phase + neutral
|
|
Voltage Inputs
|
100–690 V AC (phase-to-phase), 3-phase + residual voltage
|
|
Frequency Range
|
45–65 Hz
|
|
Protection Functions
|
Differential (87G), overcurrent (50/51), reverse power (32), under/overvoltage (27/59), frequency protection (81), stator earth fault (64G), loss of excitation (40), out-of-step (78)
|
|
Communication Protocols
|
IEC 61850 (GOOSE, MMS), IEC 60870-5-103, Modbus RTU, DNP3.0, Ethernet (RJ45/FO)
|
|
Binary I/O
|
24 programmable inputs, 18 relay outputs (250 V AC/DC, 5 A)
|
|
Measurement Accuracy
|
±0.5% for current, ±0.2% for voltage
|
|
Event Recording
|
500+ event logs with 1 ms resolution, 64 disturbance records
|
|
Operating Temperature
|
-40°C to +70°C
|
|
Housing
|
19-inch rack-mountable (4U), IP40 protection
|
|
Certifications
|
IEC 60255, IEEE C37.90, IEC 61850 Ed.2, UL 508, CE, RoHS
|
Functional Features
- Generator Differential Protection (87G)
- High-speed differential protection for stator windings, detecting internal faults with minimal operating time (<20 ms).
- Adaptive restraint to prevent false tripping during CT saturation or inrush currents.
- Advanced Fault Detection
- Stator Earth Fault Protection (64G): Detects ground faults via residual voltage or third-harmonic monitoring.
- Backup Impedance Protection (21): Provides backup for external grid faults.
- Synchronization & Power Management
- Automatic synchronization (25) for generator connection to the grid.
- Active/reactive power control and power factor regulation.
- Condition Monitoring
- Real-time measurement of generator parameters: current, voltage, active/reactive power, frequency, and harmonics.
- Thermal overload protection based on generator thermal model (49).
- Communication & Integration
- Seamless integration with SCADA, DCS, and substation automation systems via IEC 61850 (GOOSE/MMS).
- Redundant Ethernet ports for high-availability networks.
- Human-Machine Interface (HMI)
- Graphical LCD display with intuitive menu navigation for configuration and diagnostics.
- Front-panel USB port for settings management and firmware updates.
- Cybersecurity
- Role-based access control, password protection, and encrypted communication (IEC 62351).
- Disturbance Recording
- High-resolution oscillography and sequence-of-event (SOE) recording for post-fault analysis.
Typical Applications
- Power generation plants (thermal, hydro, wind, or solar).
- Industrial co-generation systems.
- Busbar protection in substations or switchgear.
- Islanded grids and microgrids.
Compliance & Standards
- Protection: IEC 60255, IEEE C37.90.
- Communication: IEC 61850 Ed.2, DNP3.0, Modbus.
- Environmental: RoHS, REACH, IP40.
Conclusion
The ABB REG670 1MRK002826-AC is a versatile and highly reliable protection relay tailored for generator and busbar applications. Its integration of adaptive protection logic, precise measurement capabilities, and support for modern communication standards (e.g., IEC 61850) ensures optimal performance in complex power systems. Designed for harsh environments and critical infrastructure, it is a cornerstone of ABB’s Relion® series, offering unmatched flexibility and diagnostics for power generation and grid stability.
There are no reviews yet.