ABB | SPAU 140 C | Synchro-Check Relay

Description: The SPAU 140 C is a voltage measuring relay designed for use when connecting two power systems together. It supports both synchro-check and voltage-check functions to ensure safe and reliable network connections.

Functions:

• Synchro-Check Function: Used when connecting two separate networks or electrically interconnected network sections. This function ensures that the circuit breaker closes only if the voltages on both sides meet preset conditions regarding magnitude, phase, and frequency difference.
• Voltage-Check Function: Used when connecting a disconnected bus or line to an energized network section.

Scope:

• Synchro-Check Protection: Provides protection when connecting separate parts to an energized network.

Product Benefits:

• Network Protection: Safeguards your networks when connecting separate parts to an energized network.

Product Features:

• Two Operation Stages: Allows checking of closing conditions for two separate circuit breakers.
• Function Availability: Both synchro-check and voltage-check functions are available for each operation stage.
• Operation Modes: Includes two different operation modes for flexibility.
• Continuous Auto-Diagnostic: Provides continuous self-supervision of both relay hardware and software for reliable operation.