中文版
Phone: 
Email: 
WhatsApp: Description
Product Overview: ABB REF541KM118AAAA
Engineered by ABB, a global leader in power and automation technologies, the ABB REF541KM118AAAA is a high-performance numerical protection relay designed for comprehensive motor and feeder protection in medium-voltage (MV) networks. Part of ABB’s advanced REF series, this relay combines state-of-the-art protection algorithms, precise measurement capabilities, and flexible communication options to ensure reliable operation in critical industrial and utility applications.
Ideal for environments where equipment safety and operational continuity are paramount, the ABB REF541KM118AAAA offers robust protection against faults while providing real-time data for predictive maintenance. Its modular design and wide compatibility make it suitable for both new installations and retrofitting into existing systems, backed by ABB’s decades of expertise in substation automation.
Technical Specifications — ABB REF541KM118AAAA
| Parameter | Details |
|---|---|
| Product Type | Numerical Protection Relay |
| Model Number | 3BSC950263R1 (REF541KM118AAAA) |
| Voltage Range | 50–250 V DC/AC (auxiliary power) |
| Current Input | 1 A or 5 A (selectable) |
| Protection Functions | Overcurrent, earth fault, thermal overload, under/overvoltage, frequency protection, capacitor bank protection, and motor-specific safeguards |
| Communication Protocols | IEC 60870-5-103, Modbus RTU, SPA Bus, LON Bus, DNP 3.0 (via adapters) |
| Dimensions (WxHxD) | 144 mm x 144 mm x 120 mm |
| Weight | 4.3 kg |
| Enclosure Rating | IP20 (indoor use); compatible with NEMA 1 enclosures |
| Operating Temperature | -20°C to +60°C |
| Certifications | CE, UL, CSA, IEC 61850-6 compliance via SPA-ZC400 adapter |
ABB REF541KM118AAAA
Main Features and Advantages: ABB REF541KM118AAAA
The ABB REF541KM118AAAA stands out for its blend of technical excellence and operational flexibility, delivering tangible benefits for industrial and utility applications:
1. Comprehensive Protection
- Multi-Functionality: Supports over 20 protection functions, including directional overcurrent, restricted earth fault, and thermal overload protection, tailored to motor, feeder, and capacitor bank applications .
- Adaptive Algorithms: Advanced harmonic analysis and fault detection ensure accurate tripping even in complex networks, reducing false alarms and downtime.
- Motor-Specific Safeguards: Includes 堵转保护，phase unbalance detection, and inrush current stabilization for motors up to 2000 HP .
2. Precise Measurement & Monitoring
- Power Quality Analysis: Measures THD (Total Harmonic Distortion) for currents and voltages, providing insights into network health and compliance with IEEE 519 standards .
- Condition Monitoring: Tracks circuit breaker wear, trip circuit integrity, and internal self-diagnostics, enabling proactive maintenance .
- Real-Time Data: Displays phase currents, voltages, power factors, and energy consumption on a large LCD screen or via remote SCADA systems .
Related Products: ABB REF541KM118AAAA
For users seeking solutions for different voltage levels or applications, ABB’s REF series includes complementary models:
- ABB REF542: Enhanced bay control unit with extended I/O capabilities for complex substation automation .
- ABB REF545: Heavy-duty feeder terminal for high-voltage networks with advanced fault location and synchronization features .
- ABB RET541: Transformer protection relay with differential protection for generator-transformer blocks .
All share ABB’s commitment to interoperability and reliability, ensuring cohesive performance across industrial setups.
Product Guarantee: ABB REF541KM118AAAA
The ABB REF541KM118AAAA comes with a 12-month warranty from the date of installation, covering defects in materials and workmanship. ABB’s rigorous testing protocols ensure each unit meets strict quality standards before leaving the factory.
For technical support, replacement parts, or warranty claims, customers can contact ABB’s authorized partners or reach out directly via:
- Email: support@ygplc.com
- WhatsApp +86 18859254943
Whether you’re upgrading legacy systems or building new infrastructure, the ABB REF541KM118AAAA delivers the performance and reliability that industrial operations demand.
