ABB CP651-WEB
◆◇◆ Functionality & System Integration ◆◇◆
The CP651-WEB is a next-generation digital protection relay developed by ABB for modern power distribution and grid automation. It combines advanced fault detection, real-time monitoring, and web-enabled diagnostics to safeguard electrical networks against overloads, short circuits, and voltage instability. Designed for integration into smart grids, industrial power systems, and renewable energy plants, it supports critical applications such as feeder protection, transformer management, and distributed generation control. With its embedded web server and IoT-ready architecture, the CP651-WEB bridges operational technology (OT) and IT systems, enabling remote access, predictive maintenance, and seamless compliance with grid codes.
◼◼ TECHNICAL SPECIFICATIONS ◼◼
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Parameter
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Details
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Input Voltage
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24–250 V DC/AC (universal power supply)
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Current Rating
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1–5 A (CT-configurable up to 6,300 A primary)
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Protection Functions
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Overcurrent (ANSI 50/51), Earth Fault (ANSI 50N/51N), Over/Under Voltage, Frequency Protection
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Communication
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IEC 61850, Modbus TCP, DNP3, WebSocket API
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Cybersecurity
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HTTPS/SSL, SSH, Role-Based Access Control (RBAC)
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Operating Temp
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-40°C to +70°C (conformal coating for humidity resistance)
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Certifications
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IEC 60255, UL 508, IEEE C37.90, CE, UKCA
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◼◼ CORE FEATURES ◼◼
🔹 Intelligent Grid Protection
- Adaptive Protection Curves: Customizable IDMT/DT curves for grid resilience.
- Synchrophasor Measurement: IEEE C37.118-compliant PMU for grid stability analysis.
🔹 Web-Based Management
- Embedded Web Server: Access relay settings, fault records, and dashboards via any browser.
- API Integration: RESTful APIs for SCADA/EMS integration and custom app development.
🔹 Advanced Diagnostics
- Disturbance Recorder: Captures 128 fault events with oscillography and sequence-of-events (SOE) logs.
- Condition Monitoring: Tracks insulation health, contact wear, and temperature trends.
🔹 Cyber-Hardened Design
- Secure Boot: Prevents unauthorized firmware modifications.
- Encrypted Logs: Tamper-proof event storage for forensic analysis.
◼◼ APPLICATION SYSTEMS ◼◼
- Smart Grids: Protects distribution feeders and microgrids with adaptive islanding detection.
- Industrial Plants: Ensures motor and transformer protection in steel, cement, and chemical industries.
- Renewable Energy: Manages solar/wind farm grid connections and anti-islanding protocols.
- Data Centers: Monitors backup generators and UPS systems for fault resilience.
- Transportation: Safeguards traction power supplies and EV charging infrastructure.
◼◼ INNOVATIVE DESIGN HIGHLIGHTS ◼◼
- Modular I/O Slots: Expandable with analog/digital modules for custom sensor integration.
- Dual Ethernet Ports: Redundant LAN connections for high-availability networks.
- E-Ink Display: Low-power, sunlight-readable local interface for field operations.
◼◼ SOFTWARE & INTEROPERABILITY ◼◼
- ABB PCM600 Integration: Streamlines configuration, testing, and asset management.
- Cloud Connectivity: ABB Ability™ Edge Gateway compatibility for predictive analytics.
- Virtualization Support: Runs as a virtual IED in software-defined substations.
Combining grid resilience, cyber-physical security, and Industry 4.0 connectivity, the CP651-WEB redefines electrical protection for the digital age. Its fusion of web-native access and rugged reliability positions it as a cornerstone of ABB’s vision for adaptive, sustainable power networks.
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