Description
The ABB REF610C11LCNP is a high-performance feeder protection relay belonging to ABB’s Relion® 600 series, designed to deliver advanced protection, measurement, and monitoring capabilities for medium-voltage (MV) distribution systems. Engineered for both public and industrial power networks, the REF610C11LCNP serves as a critical component in protecting incoming and outgoing feeders in substations, marine installations, and industrial facilities. As part of ABB’s modular Relion® platform, this relay integrates seamlessly with digital substation architectures, offering scalable solutions for radial or ring-fed networks.
The ABB REF610C11LCNP combines multiple protection functions into a single compact device, including overcurrent protection, earth fault protection, phase sequence protection, and thermal overload monitoring for cables and transformers. Its core capabilities extend to advanced features like auto-reclosing (1–3 operations), circuit breaker failure protection, and arc flash protection (optional), ensuring rapid fault clearance and minimal downtime. Designed for resilience, the relay is certified for marine applications (DNV compliance) and withstands harsh environments, making it ideal for offshore platforms, manufacturing plants, and utility grids. By enabling real-time data integration via IEC 61850 and other protocols, the REF610C11LCNP enhances grid reliability and supports predictive maintenance, positioning it as a cornerstone of modern smart grid infrastructure.
| Parameter Name |
Parameter Value |
| Product Model |
REF610C11LCNP |
| Manufacturer |
ABB |
| Product Type |
Feeder Protection Relay |
| Rated Voltage |
110/220 V AC (control supply) |
| Rated Current |
1 A or 5 A (current inputs) |
| Frequency Range |
50/60 Hz |
| Protection Functions |
Overcurrent, earth fault, thermal overload, auto-reclosing |
| Communication Protocols |
IEC 61850, IEC 60870-5-103, Modbus®, Profibus |
| Digital Inputs/Outputs |
8 isolated digital inputs, 6 relay outputs |
| Operating Temperature |
-20°C to +50°C |
| Dimensions (W×H×D) |
160 mm × 115 mm × 90 mm |
| Mounting Method |
DIN rail (35 mm standard) |
| Certification |
IEC 61850-3, IEEE 1613, DNV (marine compliant) |
Comprehensive Protection Suite: The REF610C11LCNP integrates multi-stage overcurrent protection with both time-overcurrent (TO) and inverse-time definite minimum time (IDMT) characteristics, ensuring precise fault discrimination in radial and looped networks. Its earth fault protection supports both low and high setpoint stages, while thermal modeling of cables (IEC 60287) prevents overloads and predicts maintenance needs. The optional arc flash protection module provides sub-millisecond response to arc faults, significantly reducing damage to switchgear and personnel risk.
Intelligent Grid Integration: Built on an IEC 61850-compliant platform, the relay enables seamless interoperability with SCADA systems and other intelligent electronic devices (IEDs). Its dual Ethernet ports support peer-to-peer communication and GOOSE messaging for fast trip signaling, while legacy protocols like Modbus® ensure compatibility with older infrastructure. The relay’s built-in disturbance recorder captures up to 80 seconds of pre-fault and post-fault data at adjustable sampling rates, aiding in root-cause analysis and compliance reporting.
Rugged Design for Demanding Environments: Certified for marine use and compliant with IEC 61850-3 for harsh environments, the REF610C11LCNP features reinforced housing and conformal-coated PCBs to withstand humidity, vibration, and electromagnetic interference (EMI). The hot-swappable design allows maintenance without power disruption, while the intuitive front-panel LCD with multi-language support (English, Spanish, Chinese, etc.) simplifies configuration and diagnostics. Eight programmable LED indicators provide real-time status updates for protection events and system health.
The ABB REF610C11LCNP excels in diverse applications requiring robust feeder protection and grid stability:
- Power Distribution Substations: Protects incoming/outgoing feeders in urban and rural substations, supporting auto-reclosing to restore power after transient faults (e.g., lightning strikes). Its IDMT 特性 ensures coordination with upstream and downstream devices in radial networks.
- Marine and Offshore Systems: With DNV certification, the relay is ideal for marine switchboards, offshore platforms, and shipboard power systems, where it safeguards against salt corrosion and extreme temperature fluctuations while meeting strict maritime safety standards.
- Industrial Manufacturing: Deployed in factories, refineries, and mining sites to protect motor feeders, transformers, and process equipment. For example, in a chemical plant, it monitors thermal overload of pump motors and triggers alarms or trips to prevent process disruptions.
- Renewable Energy Grids: Supports microgrids and solar/wind farm substations by providing fast fault clearance in distributed generation (DG) systems. Its IEC 61850 compatibility enables integration with energy management systems (EMS) for real-time power flow optimization.
- ABB REF615: A higher-end variant with advanced power quality monitoring and synchrocheck functions for critical grids.
- ABB REF542 Plus: A versatile protection relay for transmission and distribution, suitable for transformer and busbar protection.
- ABB REF630: Designed for generator protection in power plants, offering advanced impedance and differential protection features.
- ABB PR123/P: A circuit breaker protection module that integrates with the REF610C11LCNP for comprehensive breaker health monitoring.
- ABB SPC100: A surge protection device (SPD) to enhance the relay’s resilience against transient overvoltages in outdoor installations.
Pre-installation preparation: Mount the REF610C11LCNP on a DIN rail in a control cabinet, ensuring proper grounding and separation from high-voltage cables. Connect current transformers (CTs) and voltage transformers (VTs) to the relay’s analog inputs, following the wiring diagram to maintain phase integrity. Configure the relay’s IP address and communication protocols via the front-panel interface or ABB’s Relion® Manager software, ensuring compatibility with the substation’s IEC 61850 network.
Maintenance recommendations: Regularly review the relay’s event logs and disturbance records to identify trends in fault occurrences or equipment wear. Test the auto-reclosing functionality annually using a secondary injection test set to ensure proper operation. Clean the front-panel vents and inspect terminal connections for tightness, particularly in high-vibration environments. Update the firmware quarterly via Relion® Manager to access new features and security patches, and replace the battery-backed real-time clock (RTC) every 5 years to maintain accurate timestamps.
ABB stands behind the REF610C11LCNP with a 5-year warranty, covering defects in materials and workmanship. ABB’s global service network provides 24/7 technical support for configuration, troubleshooting, and on-site commissioning, ensuring minimal downtime during critical events. Customers benefit from ABB’s remote diagnostics via the Ability™ Digital Powertrain platform, which monitors relay health and predicts maintenance needs. With rigorous testing against IEC and IEEE standards and a proven track record in mission-critical grids, the REF610C11LCNP delivers unparalleled reliability, making it a trusted choice for utilities and industrial operators worldwide.
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