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ABB SPAD346C3 Differential Relay Protection Device

In stock
Warranty: 365 days
Quality: Original unopened
Condition: New / Used
E-mail: dcs-supply@foxmail.com

ABB SPAD346C3 Differential Relay Protection Device – Key Functions‌

1. Core Protection Function‌

Differential Current Protection‌: Detects and trips during internal faults (e.g., short circuits) in transformers, generators, or busbars by comparing current magnitudes at different points.
High-Speed Operation‌: Responds within ‌milliseconds‌ to prevent equipment damage.

2. Advanced Features‌

Harmonic Restraint‌: Minimizes false trips during inrush currents (e.g., transformer energization).
Biased Differential Protection‌: Adjusts sensitivity based on load conditions for improved stability.

3. System Integration‌

Communication Protocols‌: Supports IEC 61850, Modbus, or DNP3 for SCADA integration.
Event Logging‌: Records fault waveforms and timestamps for post-event analysis.

4. Applications‌

Power Transformers‌: Primary protection for winding faults.
Generators/Motors‌: Guards against stator ground faults.
Busbars‌: Detects zone-specific faults in substations.

5. Key Features

Self-monitoring‌ with alarm outputs for relay health.
Test Mode‌ for offline verification without disconnection.




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