Product Short Description
The ABB REF610C11LCLR is a compact, high-performance multifunction protection relay belonging to ABB’s Relion® 600 series. It is purpose-built for protection, control, measurement, and monitoring of medium‑voltage (3 kV–35 kV) feeders in 60 Hz power distribution systems with resistance‑earthed and solidly‑earthed configurations[10]. This plug‑in unit integrates comprehensive overcurrent, earth‑fault, thermal overload, and optional arc‑fault protection with advanced automation and communication capabilities. Designed for utility distribution substations, industrial power systems, and marine/offshore applications, it delivers fast fault detection, reliable isolation, and seamless integration into legacy and modern substation automation architectures. The C11LCLR suffix denotes a specific hardware configuration optimized for standard feeder bay applications with robust I/O and communication interfaces tailored for 60 Hz grid systems.
Description
Technical Specifications
| Parameter | Detail |
|---|---|
| Manufacturer | ABB |
| Model | REF610C11LCLR |
| Product Type | Medium‑Voltage Feeder Protection Relay |
| Application Voltage | 3 kV–35 kV (medium‑voltage distribution) |
| Rated Frequency | 60 Hz (user‑selectable 50 Hz/60 Hz) |
| Auxiliary Power Supply | 24–240 V DC / 24–240 V AC ±20%; 50/60 Hz |
| Power Consumption | < 15 W (typical) |
| Processor | High‑speed industrial microcontroller |
| Analog Inputs | 4 high‑precision AC current inputs; configurable for 1 A / 5 A CTs |
| Digital Inputs | 5 galvanically isolated dry‑contact inputs; 24–250 V DC/AC compatible |
| Digital Outputs | 3 heavy‑duty NO trip contacts; 2 configurable NO/NC signal contacts (expandable to 5) |
| Communication Interfaces | RS‑485, SPA bus; optional Ethernet for IEC 61850 via external adapter |
| Supported Protocols | SPA, IEC 60870‑5‑103, Modbus RTU, Profibus DPV1, DNP3, IEC 61850 (MMS/GOOSE) |
| HMI | LED indicators for status, alarms, and trip indication; local pushbuttons for basic operation |
| Operating Temperature | -25 °C to +70 °C |
| Storage Temperature | -40 °C to +85 °C |
| Relative Humidity | 5–95% (non‑condensing) |
| Ingress Protection | IP20 (terminal area), IP40 (front panel) |
| Mounting | Plug‑in design for 19‑inch rack or panel mounting |
| Dimensions | Compact form factor (standard relay size) |
| Weight | Approx. 3 kg |
| Certifications | KEMA type‑test certified, DNV for marine/offshore use, CE, IEC 61000, RoHS |
Functional Features
Comprehensive Protection Functions
- Overcurrent Protection: Three‑stage phase overcurrent (50/51) with definite‑time, IDMT, or instantaneous characteristics for cable and overhead line feeders.
- Earth‑Fault Protection: Non‑directional residual overcurrent (50N/51N) with low‑set and high‑set elements for resistance‑earthed and solidly‑earthed networks[10].
- Thermal Overload Protection: Real‑time thermal modeling for cable feeders to prevent overheating and insulation damage.
- Phase Discontinuity Protection: Detects broken conductors and phase imbalance to protect connected equipment.
- Arc‑Fault Protection (Optional): Fast arc detection via lens sensors with automatic reference adjustment; supports remote light signal detection for busbar arc protection[9].
- Breaker Failure Protection (CBFP): Initiates backup tripping if the main circuit breaker fails to clear a fault.
- Auto‑Reclosing: Configurable 1–3 shot auto‑reclose (79) for rapid restoration after transient faults.
- Trip Circuit Supervision: Continuous monitoring of breaker trip circuits with alarm signaling for fault detection.
- Trip Lockout: Prevents repeated tripping after severe faults to protect equipment.
Control & Automation
- Local/Remote Control: Manual and SCADA‑based control of circuit breakers via digital outputs.
- Configurable Logic: User‑programmable logic for custom interlocking and automation sequences.
- Setting Groups: Multiple independent setting groups for quick adaptation to network operating modes.
- Breaker Condition Monitoring: Built‑in trip counters to track breaker operation cycles for predictive maintenance.
Measurement & Monitoring
- Precision Measurements: Accurate measurement of phase currents, residual current, frequency, and power parameters.
- Event & Disturbance Recording: Stores 32 sequence‑of‑events (SOE) logs and 8 fault disturbance records (128 cycles per record) for post‑incident analysis.
- Real‑Time Status Monitoring: LED indicators and remote signaling for operational status, alarms, and trip events.
Communication & Integration
- Multi‑Protocol Support: Seamless integration with legacy and modern SCADA systems via industry‑standard protocols.
- IEC 61850 Compatibility: Supports digital substation communication for MMS, GOOSE, and process bus integration via optional adapters.
- Plug‑and‑Play Design: Hot‑swap plug‑in construction for easy installation, commissioning, and maintenance.
- Time Synchronization: Accepts external time signals for accurate event time‑stamping.
Reliability & Durability
- Marine/Offshore Certified: DNV‑approved for use in harsh marine and offshore environments.
- EMC Compliance: Meets strict IEC 61000 standards for immunity to electrical noise in industrial and utility settings.
- Galvanic Isolation: Full isolation between inputs, outputs, and internal electronics to eliminate ground loops and interference.
- Long‑Term Stability: Industrial‑grade components ensure reliable operation in extreme temperatures and high humidity.
Application Scenarios
Utility Distribution Substations
- Feeder Protection: Primary protection for overhead and cable feeders in urban and rural 60 Hz distribution networks[10].
- Compact Substations: Ideal for small distribution substations, ring main units (RMUs), and kiosk installations due to its compact size.
- Busbar Backup Protection: Provides fast arc‑fault and overcurrent backup protection for medium‑voltage busbars.
Industrial Power Systems
- Manufacturing Facilities: Protection for medium‑voltage motor feeders, conveyor systems, and process power circuits.
- Mining & Minerals: Reliable operation in underground and surface mine power distribution systems.
- Oil & Gas: Certified for use in refineries, petrochemical plants, and offshore platforms.
- Marine & Offshore: DNV‑approved protection for shipboard power systems and offshore wind farm substations.
Power Generation Plants
- Auxiliary Power Systems: Protection for medium‑voltage auxiliary feeders and motor control centers in thermal, hydro, and renewable power plants.
- Generator Backup Protection: Serves as backup overcurrent and earth‑fault protection for generator output circuits.
Infrastructure & Critical Facilities
- Water & Wastewater: Protection for pump stations and treatment plant medium‑voltage distribution.
- Data Centers: Reliable feeder protection for mission‑critical power distribution systems.
- Renewable Energy: Integration into wind and solar farm medium‑voltage collector grids.
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