ABB SPAU140C

The ABB SPAU140C is a numerical synchro-check relay designed for synchronizing and connecting two power systems together. It functions as a microprocessor-based relay performing critical functions to ensure safe and efficient operations during power system connections. The relay performs voltage check, synchro-check, dead bus check, and undervoltage check functions. It can be used for generator paralleling, bus transfer, and restoration of service applications. The SPAU140C features a simple front panel and clear LCD display for user-friendly operation. It has two identical operation stages for checking the closing conditions of two separate circuit breakers and supports both synchro-check and voltage-check functions for each stage. It offers continuous and command mode operation and provides continuous auto-diagnostic self-supervision of both relay hardware and software.

Key Characteristics:

Microprocessor-based design for high accuracy and reliability.
Performs voltage check, synchro-check, dead bus check, and undervoltage check.
Versatile applications in generator paralleling, bus transfer, and restoration of service.
Easy to use with a simple front panel and clear LCD display.
Compact size for easy panel mounting.
Two identical operation stages for two circuit breakers.
Synchro-check and voltage-check functions available for both stages.
Continuous and command mode operation.
Continuous auto-diagnostic self-supervision.
Serial interface for SPA bus and higher-level host systems.