REB500 ABB Distributed Busbar Protection

Description

The REB500 is part of the Relion family of protection and control products by ABB, designed to protect, control, measure, and supervise power systems. It adapts to diverse needs while ensuring robust security measures and reliable performance in various scenarios.

Features

Reliable

• Proven concepts and algorithms with over 15 years of continuous use.

• Signal Prolongation Principle: Ensures uninterrupted measurement and correct operation, even when current transformers experience heavy saturation during external faults.

• Prevents protection function blocking, guaranteeing consistent security for the busbar.

Secure

• Detects all bus and feeder faults, regardless of the earthing system (e.g., isolated, solidly earthed, low-impedance, or compensated).

• Operates selectively for faults within the protected zone and maintains stability for external faults.

• Overall Check Zone Feature: Independent of isolator position indications, allowing stability even when the busbar replica is invalid.