Technical Parameters of ABB SPAA 341 C2 REV.A Feeder Protection + Test Switch Relay

The ABB SPAA 341 C2 REV.A is a comprehensive feeder protection relay designed for advanced electrical system monitoring, protection, and testing in medium-voltage distribution networks. Below are its key technical specifications:

1. Protection Functions

• Overcurrent Protection:
  • Phase and ground fault detection with adjustable time-current characteristics (IDMTL, definite-time, instantaneous).
  • Supports thermal overload protection for cables and transformers.
• Voltage Monitoring:
  • Overvoltage, undervoltage, and phase sequence/loss protection.
  • Voltage unbalance detection for three-phase systems.
• Earth Fault Protection:
  • Sensitive ground fault detection with adjustable thresholds and time delays.
• Breaker Failure Protection:
  • Backup protection for circuit breakers in case of malfunction.
• Test Switch Integration:
  • Built-in test switch for manual/automatic relay testing without disconnecting the secondary wiring.

2. Measurement & Metering

• Current Measurement:
  • Three-phase current (RMS) measurement with 0.5% accuracy.
  • Supports CT secondary ratings from 1 A to 5 A.
• Voltage Measurement:
  • Three-phase voltage (RMS) measurement with 0.5% accuracy.
  • Supports VT secondary ratings from 100 V to 230 V (line-to-neutral).
• Power & Energy Metering:
  • Active/reactive power, power factor, and energy consumption (kWh, kVArh) monitoring.

3. Communication & I/O

• Communication Protocols:
  • Modbus RTU/TCP, IEC 60870-5-103, DNP3 (optional).
  • Ethernet/RS485 ports for SCADA integration.
• Digital Inputs/Outputs:
  • 4 programmable digital inputs (for block signals, remote reset, etc.).
  • 3 relay outputs (for tripping, alarms, status indication).
• HMI & Display:
  • Backlit LCD display for real-time measurements, event logs, and relay settings.
  • LED indicators for relay status, alarms, and communication activity.

4. Settings & Configuration

• Flexible Configuration:
  • Front-panel keypad or software-based configuration via EnerVista™ ABB software.
  • Supports multiple protection curves (ANSI, IEC, or user-defined).
• Event Recording:
  • Stores up to 256 events with time-stamping (1 ms resolution).
  • Oscillographic recording of fault waveforms (post-mortem analysis).

5. Mechanical & Environmental Specifications

• Form Factor:
  • Panel-mounted design (DIN rail or substation enclosure compatible).
• Power Supply:
  • AC/DC: 80–265 V (50/60 Hz), with ±15% voltage tolerance.
  • Power consumption: < 5 W (typical).
• Operating Temperature:
  • -25°C to +70°C (extended range available).
• Protection Class:
  • IP40 (front panel), IP20 (rear terminals).
• EMC Compliance:
  • IEC 61000-6-2 (immunity), IEC 61000-6-4 (emissions).

6. Testing & Maintenance

• Test Switch Features:
  • Manual/automatic test mode for relay functionality verification.
  • Simulates overcurrent, undervoltage, and ground fault conditions.
• Self-Diagnostics:
  • Continuous monitoring of relay health (CT/VT supervision, memory errors, etc.).

7. Certifications & Standards

• Compliance:
  • IEC 60255, UL 508, CSA C22.2 No. 14, and other relevant international standards.
• Safety Certifications:
  • CE, UL, and CCC (China Compulsory Certificate).

8. Applications

• Industrial Feeders:
  • Protection of motors, transformers, and cables in manufacturing plants.
• Utility Distribution:
  • Overhead line and underground cable protection in distribution networks.
• Renewable Energy:
  • Feeder protection in solar/wind farms and battery storage systems.

The ABB SPAA 341 C2 REV.A combines robust protection, accurate metering, and advanced testing capabilities in a compact, user-friendly package. Its modular design and compliance with global standards make it suitable for a wide range of industrial and utility applications.

For detailed configuration guides or firmware updates, refer to ABB’s EnerVista™ software documentation or contact authorized ABB distributors.