The ABB ECL-10 is an excitation current limiter designed for synchronous generators. It limits sustained short-circuit current during generator faults, helping protect the generator and excitation system. ABB documentation shows it is used as part of UNITROL excitation systems, particularly for CT-boosting arrangements.
Key Features
- Provides current limiting during generator short-circuit conditions.
- Normally remains inactive during normal generator operation.
- Operates when generator terminal voltage falls significantly during a fault.
- Adjustable trigger level using jumper settings.
- Designed for integration with ABB UNITROL AVR/excitation systems.
- Compact construction with IP20 protection and simple screw-terminal connections.
Typical Applications
- Synchronous generator excitation systems
- Generator short-circuit current control
- CT-boost excitation circuits
- ABB UNITROL AVR systems
- Diesel-generator and power-generation plants
- Marine and industrial generator applications
