ABB REF615E_1G (H-B-F-N-AE-AG-A-N-B-1-A-N-A-1-1G) Feeder Protection and Control IED

Description

Technical Specifications

Core System & Performance

• Processor: High‑speed numerical processing platform for real‑time protection and measurement
• Sampling Rate: 32 samples per power cycle (1.2 kHz at 50 Hz) for precise fault detection
• Operating Frequency: 45–65 Hz (supports 50/60 Hz systems)
• Measurement Accuracy: Current ±1%; Voltage ±1%; Time ±1%
• Setting Groups: 6 independent setting groups for flexible operational mode switching
• Fault Recording: Disturbance recorder with 12 analog channels, 64 binary channels, and flexible triggering
• Trip Time: Typical fault trip < 40 ms; high‑speed output option < 1 ms
• Event Logging: 20,000+ time‑stamped events (1 ms resolution)
• Communication Performance: GOOSE transmission time ≤3 ms for high‑speed interlocking and protection schemes

Power Supply

• Nominal Voltage: 24–250 V DC / 110–240 V AC (universal wide‑range input)
• Power Consumption: < 15 W (quiescent); < 20 W (operating)
• Isolation: Full galvanic isolation between power, I/O, and communication circuits
• Voltage Interruption Tolerance: < 50 ms without relay reset

Analog Inputs

• Phase Current: 3 channels, programmable for 1 A or 5 A nominal (CT secondary)
• Residual Current: 1 channel (5 A/1 A/0.2 A) for earth‑fault detection
• Voltage Inputs: 3 phase voltage + 1 ground voltage (60–210 V AC nominal)
• Input Impedance: < 20 mΩ (current); < 0.05 VA (voltage)
• Thermal Withstand: Continuous 20 A; 1 s 500 A (current inputs)
• Dynamic Withstand: Half‑wave 1250 A (current inputs)

Digital I/O

• Binary Inputs: 8–16 galvanically isolated 24–250 V DC inputs (configurable)
• Power Outputs: 4 heavy‑duty trip contacts (250 V AC / 30 V DC, 5 A)
• Signal Outputs: 8–16 NO/NC configurable contacts (alarm, status, indication)
• High‑Speed Outputs: Optional 1 ms operate‑time outputs for arc‑fault protection
• HMI Indicators: 3 fixed LEDs (Ready, Start, Trip); 16 programmable LEDs

Communication Interfaces

• Ethernet: 2 ports supporting IEC 61850 Ed.1/Ed.2, GOOSE, IEC 61850‑9‑2 LE, PRP, HSR
• Serial: RS‑485 (Modbus RTU, IEC 60870‑5‑103, DNP3.0)
• Optional: Profibus DPV1 (via SPA‑ZC 302 adapter), fiber‑optic (ST/LC)
• Local Port: Front USB for PC configuration (PCM600 software)
• Time Sync: IEEE 1588 V2, IRIG‑B input for high‑accuracy time stamping
• Client Capacity: Simultaneous connection to 5 IEC 61850 clients, 5 Modbus clients, and 1 DNP3.0 client

Physical & Environmental

• Dimensions: 233 mm (H) × 160 mm (W) × 280 mm (D)
• Weight: Approx. 4.0 kg
• Mounting: Plug‑in flush mounting; 4U rack compatible
• Protection Rating: IP54 (front); IP20 (rear terminals)
• Operating Temperature: -25 °C to +70 °C
• Storage Temperature: -40 °C to +85 °C
• Humidity: 5%–95% RH (non‑condensing)
• EMC Compliance: IEC 61000 series, EN 50081‑2, CISPR 11
• Certifications: CE, IEC 60255, IEEE C37.90, RoHS

Functional Features

Comprehensive Protection Functions

• Directional/Non‑Directional Overcurrent: 4‑stage (50/51) with DT/IDMT characteristics (IEC/ANSI compliant)
• Multi‑Frequency Admittance Earth‑Fault: High‑sensitivity detection for continuous, transient, and intermittent faults
• Sensitive Earth Fault (SEF) & High‑Impedance Fault (HIZ): Detects downed conductors and low‑current earth faults
• Thermal Overload (49): Cable/feeder thermal memory for overheating prevention
• Phase Discontinuity (46PD) & Negative‑Sequence (46): Detects open‑phase and unbalanced loads
• Breaker Failure Protection (50BF/51BF): Backup tripping for failed circuit breakers
• Arc‑Fault Protection (AFD): 3 light‑sensor inputs; fast tripping for switchgear arc events
• Auto‑Reclose (79): 1–4 programmable shots for overhead line fault restoration
• Fault Location: Impedance‑based short‑circuit and earth‑fault location in radial networks
• Voltage & Frequency Protection: Overvoltage, undervoltage, residual overvoltage, positive/negative sequence overvoltage, overfrequency, underfrequency, and rate‑of‑change‑of‑frequency protection

Advanced Control & Automation

• Circuit Breaker Control: Local/remote close/trip via HMI or communication; configurable interlocking logic
• Sequence Control: Logic gates and timers for automated switching sequences
• Trip Circuit Supervision (TCS): Monitors breaker trip‑circuit integrity and alarms on faults
• Breaker Condition Monitoring: Trip counter, travel time, spring charge, and wear tracking
• Synchrocheck & Synchronization: Optional for controlled breaker closing

Monitoring & Diagnostics

• Real‑Time Measurements: Phase/residual current/voltage, power, energy, power factor, harmonics, and unbalance
• Disturbance Recording: Pre/post‑fault waveform capture in COMTRADE format for detailed fault analysis
• Self‑Diagnostics: Continuous hardware/software monitoring with internal fault alarms
• Graphical HMI: Large color display with customizable single‑line diagrams (SLDs)
• Web‑Based Interface: Remote access for monitoring, configuration, and diagnostics

Flexibility & Integration

• Plug‑In Design: Withdrawable unit for fast installation and maintenance
• Modular Communication: Multi‑protocol support for seamless SCADA/DCS integration
• Standard Configurations: 12 pre‑set setups for rapid commissioning
• Sensor Compatibility: Works with conventional CT/VT and modern Rogowski coils
• Redundancy: PRP/HSR support for high‑availability communication networks

Application Scenarios

Utility Distribution Networks

• MV Feeders: Primary protection for overhead lines and underground cables in distribution substations
• Distribution Transformers: Backup protection for pole‑mount and pad‑mount transformers
• Capacitor Banks: Overcurrent, unbalance, and overvoltage protection for reactive power compensation
• Sectionalizers/Reclosers: Automated control and protection for grid sectionalizing devices
• Distributed Generation: Interconnection protection for solar, wind, and battery energy storage systems

Industrial Power Systems

• Manufacturing Plants: Motor and feeder protection for pumps, fans, conveyors, and compressors
• Mining Operations: Heavy‑duty protection for underground power distribution
• Oil & Gas Facilities: Refineries, offshore platforms, and pipeline pumping stations
• Water & Wastewater: Pump stations and treatment plant power systems
• Data Centers: Backup power and UPS feeder protection

Specialized Applications

• Railway Electrification: Traction power substation feeder protection
• Marine & Offshore: Shipboard and offshore platform power distribution
• Digital Substations: IEC 61850‑based automation with process bus (IEC 61850‑9‑2 LE) integration
• Arc‑Fault Protection: Fast busbar and switchgear protection in metal‑enclosed cabinets
• Retrofit Projects: Legacy system upgrade with modern protection and communication