ABB Synchro-check Relay SPAU 140 C

Operation Modes

• The relay has two identical operation stages for checking the closing conditions of separate circuit breakers.
• It supports both synchro-check and voltage-check functions in each stage.
• Two operation modes are available: continuous and continuous auto-diagnostic self-supervision.

Features

• The SPAU140C is a numerical synchro-check relay designed for connecting two power systems.
• It serves both synchro-check and voltage-check functions.
• The synchro-check function ensures safe synchronization between separate networks or interconnected sections.
• The voltage-check function allows connecting a disconnected bus/line to an energized network section.

Technical Specifications

• Rated voltage: 220V AC/DC
• Rated current: 10A
• Mechanical life: Over 1 million operations
• Electrical life: Over 500,000 operations