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Product Description

The SPAU 330 C voltage relay is designed for overvoltage, undervoltage, and residual voltage supervision in substation busbars and other critical applications. It monitors phase-to-phase and residual voltages in distribution networks and, when fully equipped, includes a digital disturbance recorder for fault analysis and system diagnostics. While the product is no longer active (since 2009), it remains a reliable reference solution for voltage protection in various industrial environments.

Scope of Application

• Overvoltage protection

• Undervoltage protection

• Residual voltage supervision

• Fault recording and event analysis

Product Benefits

• Reliable supervision of substation busbar phase-to-phase voltage

• Effective protection of transformers, motors, generators, and capacitor banks

• Enhances safety and stability of critical electrical infrastructure

Key Features

• Multifunction Supervision & Protection:
  Suitable for substation voltage monitoring and general applications requiring voltage protection or supervision.

• Disturbance Recorder Module (Optional):
  Captures and stores electrical events to help verify protection relay performance and analyze network disturbances.

• Communication Interface:
  Built-in serial fiber-optic interface for two-way data exchange with substation-level systems.

• Self-Supervision with Auto-Diagnostics:
  Continuous monitoring of hardware and software functionality ensures system reliability and availability.