ABB RED615 Line Differential Protection and Control Relay

Description

Technical Specifications

• Product Type: Numerical Line Differential Protection and Control IED
• Protection Functions:
  • Main Protection: Two-stage, phase-segregated line differential protection (LNPLDF)
  • Backup Protection: Four-stage phase overcurrent, two-stage earth-fault protection
  • Additional Protection: Phase unbalance, loss-of-phase, circuit-breaker failure, thermal overload
  • Advanced Features: Second harmonic restraint for inrush detection, multi-frequency admittance earth-fault protection
  • Optional Functions: Fault location, power quality monitoring, synchro-check, auto-reclose
• Analog Inputs:
  • Current Inputs: 3-phase + 1 residual (1 A or 5 A nominal; conventional CT/sensor compatible)
  • Voltage Inputs: Up to 5 voltage transformer inputs
• Binary Inputs/Outputs:
  • Binary Inputs (BI): 8, 12, or 16 configurable (software selectable)
  • Binary Outputs (BO): 6 to 10 configurable (form C contacts)
• Communication Interfaces:
  • Line Differential: Fiber-optic (1310 nm, LC connector, multi/single-mode) or galvanic pilot wire
  • Station Bus: 1/2 x 100Base-TX Ethernet (RJ45), IEC 61850 Edition 1/2, GOOSE, MMS
  • Redundancy: HSR (High-availability Seamless Redundancy), PRP (Parallel Redundancy Protocol)
  • Serial: RS-485 (Modbus RTU/ASCII, DNP3, IEC 60870-5-103)
  • Time Sync: IEEE 1588 v2 PTP, IRIG-B, SNTP
• Power Supply:
  • Wide Range: 24–265 V AC/DC (auto-sensing)
  • Power Consumption: < 15 W (typical)
• Physical Characteristics:
  • Form Factor: Compact, withdrawable plug-in unit
  • Mounting: 1/2 19″ rack, flush/semi-flush panel, DIN-rail
  • Dimensions: 144 x 266 x 205 mm (HxWxD)
  • Weight: Approx. 2.8 kg
  • Enclosure: IP54 (front), IP20 (rear)
• Environmental Ratings:
  • Operating Temperature: -25°C to +55°C (standard); -40°C to +70°C (extended)
  • Storage Temperature: -40°C to +85°C
  • Humidity: 5–95% non-condensing
  • EMC: Complies with IEC 60255-6, IEC 61000-4 series
• Accuracy:
  • Differential Current: ±3% (typical)
  • Time Synchronization: < 4 µs (IEEE 1588 v2)
  • Measurement Accuracy: Class 0.2 for current/voltage, Class 0.5 for power
• Certifications: CE, UL, cUL, IEC 60255, ANSI C37.90

Key Features

• Absolute Selective Line Differential Protection:
  • Provides instantaneous, unit-type protection with complete immunity to network load and external faults
  • Dual sensitivity stages (low/high) adapt to varying line loading and fault conditions
  • Superior stability during power system swings and inrush current with advanced harmonic restraint
  • Supports secure operation for lines with embedded transformers and distributed generation sources
• High-Speed, Reliable Communication:
  • Ultra-fast data exchange (few milliseconds) over dedicated fiber-optic or pilot wire links
  • Binary Signal Transfer (BST) for 8 intertrip/blocking signals between line ends
  • Native IEC 61850 Edition 2 support with fast GOOSE (<10 ms) and process bus (IEC 61850-9-2 LE)
  • Redundant Ethernet (HSR/PRP) ensures zero communication downtime for critical applications
• Comprehensive Backup & Advanced Protection:
  • Multi-stage directional/non-directional overcurrent and earth-fault protection for full backup
  • Sensitive earth-fault and multi-frequency admittance protection for high-resistance fault detection
  • Built-in circuit-breaker failure protection and lockout functionality
  • Optional fault locator accurately determines short-circuit and earth-fault position
• Flexible & User-Centric Design:
  • Withdrawable plug-in design enables hot-swapping and maintenance without power disconnection
  • Large graphical LCD with customizable single-line diagram display
  • Local HMI and web-browser-based remote interface for configuration and monitoring
  • Predefined standard configurations (D/E) for rapid deployment and easy customization
• Robust Industrial Performance:
  • Extended temperature range operation for harsh indoor/outdoor substation environments
  • Conformal coating protects circuitry from humidity, dust, and chemical pollutants
  • High immunity to electromagnetic interference ensures stable performance in electrical substations
  • Continuous self-diagnostics and hardware monitoring for high system availability
• Seamless System Integration:
  • Full compatibility with ABB PCM600 configuration tool for engineering and diagnostics
  • Multi-protocol support (IEC 61850, Modbus, DNP3, IEC 60870-5-103) for SCADA connectivity
  • Precise time synchronization (IEEE 1588 v2) for event logging and sequence-of-events recording
  • Supports integration with wide-area monitoring, protection, and control systems

Application Scenarios

• Utility Power Distribution Networks:
  • Primary protection for medium-voltage overhead lines and underground cable feeders
  • Protection of looped and meshed distribution networks requiring absolute selectivity
  • Interconnection lines between distribution substations with distributed energy resources
  • Radial networks with embedded transformers or distributed generation (solar/wind)
• Industrial Power Systems:
  • Main and backup protection for critical plant power distribution lines
  • Reliable protection for industrial cables and feeders in manufacturing facilities
  • Secure operation in heavy industrial environments with high electromagnetic interference
  • Integrated protection and control for oil/gas refineries, chemical, and pharmaceutical plants
• Water & Wastewater Facilities:
  • Differential protection for long-distance power feeders to pumping stations
  • Reliable operation in humid and corrosive wastewater treatment environments
  • Seamless integration with SCADA systems for remote monitoring and control
• Mining & Metals Industry:
  • Protection of power distribution lines in high-vibration, dusty mining environments
  • Selective fault isolation for underground and surface mine electrical networks
  • Coordinated protection with variable speed drives and heavy motor loads
• Commercial Building & Infrastructure:
  • Feeder protection for large commercial complexes, data centers, and hospitals
  • Reliable backup protection for critical power distribution circuits
  • Integration with building management systems for comprehensive energy monitoring
• Renewable Energy Installations:
  • Interconnection line protection between wind/solar farms and main grid
  • Secure operation with bi-directional power flows and inverter-based generation
  • Adaptive protection for grids with high penetration of renewable energy sources
• Transportation & Marine:
  • Power line protection for railway electrification systems
  • Marine and offshore platform power distribution feeders
  • Protection of airport and seaport electrical distribution networks