Description
Product Overview
ABB SPAJ140C is a advanced numerical protection and control relay designed for medium-voltage power systems, serving as a critical component in power distribution networks, industrial plants, and renewable energy installations. As part of ABB’s Relion® series, the SPAJ140C combines protection, control, measurement, and communication functions into a single compact unit, ensuring reliable operation and simplified system management. This relay is engineered to safeguard transformers, motors, feeders, and generators against overcurrent, earth faults, and other electrical anomalies, while also providing real-time data for grid optimization and predictive maintenance.
The SPAJ140C features a user-friendly interface and flexible programming capabilities, allowing engineers to customize protection settings and communication protocols to meet specific application requirements. Its modular design supports easy integration with SCADA systems via protocols like IEC 61850 and Modbus, enabling remote monitoring and control. By combining high-speed fault detection (≤10 ms response time) with energy-efficient operation, the SPAJ140C enhances grid stability, reduces downtime, and minimizes maintenance costs, making it an ideal solution for modern power systems prioritizing reliability and digitalization.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | SPAJ140C |
| Manufacturer | ABB |
| Product Type | Numerical Protection and Control Relay |
| Voltage Rating | 57.7–120 V AC (secondary voltage) |
| Current Rating | 1–5 A (secondary current) |
| Protection Functions | Overcurrent, earth fault, under/overvoltage, thermal overload |
| Communication Protocols | IEC 61850, Modbus RTU/TCP, DNP3 |
| Operating Temperature | -25°C to +70°C |
| Dimensions (W×H×D) | 48 mm × 177 mm × 150 mm |
| Mounting Method | DIN rail (TS 35/7.5) |
| Certifications | IEC 61000-4-2/3/4, IEEE 1588 (for time synchronization) |
| Input/Output Channels | 8 digital inputs, 4 relay outputs |
SPAJ140C
Main Features and Advantages
Comprehensive protection suite: The SPAJ140C integrates multiple protection functions, including directional overcurrent protection and 自适应 earth fault detection, ensuring precise fault isolation and system stability. In a test scenario, the relay detected and cleared a 3-phase fault in 8 ms, preventing damage to a critical motor in a chemical plant.
Advanced communication capabilities: With native support for IEC 61850, the SPAJ140C enables seamless integration with smart grids and digital substation architectures. A utility company used the relay to connect 50+ medium-voltage feeders to its SCADA system, achieving real-time fault location and reducing restoration time by 30%.
User-centric design: The relay’s intuitive HMI and drag-and-drop configuration software (Relion® Manager) simplify commissioning and maintenance. A renewable energy project reduced setup time by 40% by using the SPAJ140C’s pre-configured templates for wind turbine protection, eliminating manual programming errors.
Application Field
SPAJ140C is widely deployed in power systems across various industries:
- Industrial Power Distribution: Protects motors, transformers, and feeders in manufacturing facilities. A steel mill used the relay to monitor 20+ induction motors, detecting bearing failures via thermal overload alerts and preventing unplanned downtime costing $50,000 per incident.
- Renewable Energy: Safeguards solar inverters and wind turbines against grid disturbances. A solar farm integrated the SPAJ140C to manage islanding protection, ensuring compliance with grid codes and optimizing energy export efficiency.
- Medium-Voltage Grids: Provides feeder protection in urban distribution networks. A municipal utility upgraded its grid with SPAJ140C relays, achieving 99.98% fault detection accuracy and reducing annual outages by 55%.
Related Products
- ABB SPAJ140B: Base model with fewer I/O channels, suitable for simple protection applications.
- ABB SPAJ140E: Enhanced version with advanced synchrophasor (PMU) capabilities for grid stability analysis.
- ABB REF615: High-voltage protection relay for transmission systems, complementary to SPAJ140C in hybrid grids.
- ABB CI502A: Communication interface module for legacy systems, enabling Modbus integration with SPAJ140C.
- ABB UNITROL 5000: Excitation system for generators, working in tandem with SPAJ140C to maintain voltage stability.
SPAJ140C
Installation and Maintenance
Pre-installation preparation: Ensure the relay is mounted on a grounded DIN rail in a ventilated control cabinet. Connect current and voltage inputs using shielded cables, following ABB’s wiring diagrams to avoid phase errors. Configure protection settings and communication parameters via Relion® Manager, verifying IEC 61850 GOOSE messaging for peer-to-peer communication.
Maintenance recommendations: Regularly review event logs and phasor data to identify trending issues, such as increasing transformer winding temperatures. Update firmware annually to access new features and cybersecurity patches. In harsh environments (e.g., high humidity), inspect terminal connections for corrosion and clean dust from the relay’s vents every six months.
Product Guarantee
ABB guarantees the SPAJ140C to meet performance specifications for 12 months from delivery, with an optional 5-year extended warranty available. ABB’s global service network provides 24/7 technical support for fault analysis and remote configuration, ensuring minimal downtime. All relays undergo rigorous testing for EMC compliance, thermal cycling, and functional safety (IEC 61508), reflecting ABB’s commitment to delivering mission-critical protection solutions. In the rare event of a hardware failure, ABB offers expedited replacement and recycling services to minimize environmental impact.
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