ABB REF541KB115AAAA Feeder Terminal

Description

Technical Specifications

• Product Type
  • Digital Feeder Terminal / Bay Controller
• Rated Operational Voltage
  • Auxiliary Power Supply: 110 – 240 V AC/DC (±15% tolerance)
• Input/Output Interface
  • Binary Inputs: 15 programmable optically isolated inputs
  • Output Relays: 12 change-over relay outputs
  • Analog Inputs: Connects to standard current transformers (CT) and voltage transformers (VT)
• Communication Protocols
  • Native: SPA bus, LON bus, IEC 60870-5-103
  • Via Adapters: IEC 61850 (SPA-ZC 400), Profibus-DPV1 (SPA-ZC 302), DNP 3.0, Modbus
• Physical Characteristics
  • Dimensions: 145 mm (W) x 210 mm (H) x 150 mm (D)
  • Mounting: Front panel mounting
  • Display: Integrated graphical LCD display with LED status indicators
  • Housing: Industrial metal chassis for EMI shielding
• Environmental Ratings
  • Operating Temperature: -25 °C to +70 °C
  • Storage Temperature: -40 °C to +85 °C
  • Humidity: 5 – 95% RH (non-condensing)
  • Protection Class: IP54 (front panel), IP20 (rear terminals)
• Certifications
  • CE, UL, IEC 60255, IEC 61850-3

Key Features

• Comprehensive Protection Suite
  • Provides non-directional and directional overcurrent protection.
  • Offers sensitive earth-fault protection for all network neutral earthing schemes.
  • Includes over/undervoltage, residual voltage, phase imbalance, and thermal overload protection.
  • Integrates automatic reclosing, circuit breaker failure protection (CBFP), and synchro-check functions.
• Integrated PLC Control Logic
  • Features built-in programmable logic capability to implement custom automation sequences.
  • Eliminates the need for external PLCs for bay-level interlocking and automation.
  • Supports complex control schemes for distribution network optimization.
• High-Precision Measurement & Power Quality
  • Measures phase currents, voltages, active/reactive power, energy, and frequency.
  • Calculates total harmonic distortion (THD) for current and voltage.
  • Monitors voltage sags, swells, and short-duration interruptions for power quality analysis.
• Advanced Communication & Integration
  • Supports multiple industry-standard protocols for seamless SCADA and DCS integration.
  • Enables full interoperability in smart grid environments, particularly with IEC 61850.
  • Facilitates remote configuration, monitoring, and diagnostics via ABB software tools.
• Built-in Monitoring & Diagnostics
  • Performs continuous self-supervision and internal fault detection.
  • Provides circuit breaker condition monitoring and trip circuit supervision.
  • Records up to 1000+ time-stamped events and disturbance records in COMTRADE format.
• Operational Flexibility
  • Supports local HMI operation and remote control via the communication network.
  • Offers configurable input/output logic for versatile project adaptation.
  • Designed for easy retrofitting into existing switchgear panels.

Application Scenarios

• Medium-Voltage Distribution Feeders
  • Primary protection and control for overhead lines and underground cables in urban and rural distribution networks.
• Distribution Substations
  • Acts as a bay controller for ring main units (RMUs), air-insulated, and gas-insulated switchgear (GIS).
• Industrial Power Distribution
  • Protects and controls MV feeders in large industrial plants, mines, and processing facilities.
• Utility Substation Automation
  • Integrates into ABB Distribution Automation systems for fault location, isolation, and service restoration (FLISR).
• Capacitor Bank Protection
  • Manages and protects shunt capacitor banks for voltage regulation and reactive power compensation.
• Large Motor Control
  • Provides feeder protection for medium-voltage induction motors in water treatment, pumping stations, and manufacturing.
• Smart Grid Networks
  • Enables distributed intelligence, demand response, and real-time grid monitoring for modern smart distribution systems.