ABB REF545KB133AAAA Protective Relay: Precision Power System Protection
The ABB REF545KB133AAAA protective relay represents the pinnacle of power system protection technology, combining advanced digital signal processing with robust fault detection algorithms. Engineered for mission-critical applications, this relay delivers millisecond-level response times and multi-layered protection schemes to safeguard electrical infrastructure across industrial and utility networks. Its dual communication ports and adaptive configuration capabilities ensure seamless integration with modern energy management systems.
Key Features
- Comprehensive Protection Suite
Integrated earth fault, phase fault, and overcurrent protection with adjustable trip thresholds - Hybrid Communication Interfaces
Dual-port Modbus RTU and 10/100 Mbps Ethernet for redundant SCADA connectivity - High-Accuracy Sensing
Class 5P measurement accuracy with 0.5% full-scale precision across operating temperature range - Compact Industrial Design
DIN-rail mountable enclosure (144x92x88mm) with IP20 ingress protection rating - Self-Diagnostic System
Continuous hardware health monitoring with predictive maintenance alerts
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand/Model | ABB REF545KB133AAAA |
| Rated Voltage | 220 V AC/DC |
| Frequency Range | 50/60 Hz ±10% |
| Operating Temp | -25°C to +70°C |
| Communication | Modbus RTU + Ethernet (RJ45) |
| Mounting | 35mm DIN rail compliant |
Application Fields
This protective relay excels in medium-voltage distribution systems, serving as primary protection for transformers, feeders, and motors in critical infrastructure. Typical deployments include:
- Power generation plants (gas, steam, and hydro turbines)
- Electrical transmission and distribution networks
- Industrial manufacturing facilities with complex load profiles
- Renewable energy integration systems (wind/solar farms)
- Marine power systems with fluctuating load demands
Our company specializes in premium industrial control solutions from leading global manufacturers including ABB, Allen Bradley, ICS Triplex, Prosoft, Reliance, FOXBORO, GE Fanuc, Triconex, Schneider, Bently Nevada, Emerson Epro, Honeywell, Woodward, and Yokogawa. Key product lines include ABB DSQC series robot components, GE VMIVME modules, Bently Nevada 3500 system probes, Foxboro FBM control modules, Triconex safety systems, and Woodward digital controllers.
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