Description
Product Introduction
From a field safety perspective, an arc flash event inside low- or medium-voltage switchgear can destroy an entire lineup of cubicles in less than 100 milliseconds. The ABB REA101 (64515667) functions as the central logic and processing brain of a high-speed arc mitigation network, combining optical light inputs with phase overcurrent conditions to validate a fault before triggering breaker trip coils. Unlike conventional time-overcurrent protection relays that wait for thermal thresholds to cross, this specialized unit prioritizes clearing speed to preserve equipment structural integrity and ensure operator safety.
Evaluating this specific protection module requires an exact check of your facility’s auxiliary supply voltage ranges, as the internal power boards dictate compatibility with your station battery banks. The module monitors its own internal health and optical fiber continuity continuously, outputting a dedicated watchdog contact to alert the SCADA system the moment an optical path is compromised. For industrial plants or marine vessels operating critical medium-voltage switchgear, holding a verified, factory-sealed ABB REA101 (64515667) in stock prevents prolonged facility blackouts when a protection component fails during routine testing.
Key Selling Points & Differentiators
- Ultra-Fast Trip Sub-System: Executes trip signal generation in under 2.5 ms when configured with dual light and overcurrent criteria, minimizing arc flash energy release down to manageable thresholds.
- Dual-Criteria Security: Prevents nuisance tripping from high-intensity ambient flashes or camera photography by validating light spikes against real-time phase overcurrent status from upstream CTs.
- Verified Functional at Time of Test: Each surplus card undergoes extensive high-speed optical injection testing and insulation mapping before being sealed in moisture-barrier ESD shielding.
- Modular Scale Architecture: Acts as the master hub, linking seamlessly to downstream extension units via proprietary high-speed local buses to scale up protection across dozens of cubicles.
- Application Boundaries: Not recommended for outdoor installations or open busbar configurations exposed to direct, unfiltered sunlight without specialized lens shading structures.
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