LFAA

The LFAA auto-reclose relay provides facilities for single or two-shot reclosures of one or two circuit breakers following their tripping for a fault on an overhead line.

The LFAA relay can be selected for single and/or three-phase auto-reclosing. The reclosures can be selected at varying speeds and the relay is suitable for feeders controlled by one or two circuit breakers.

Easy phase selection and quick equipment conversion

The LFAA allows reclosures to be selected to high-speed single-phase, or high- speed or delayed three-phase. When three-phase reclosure is selected, the equipment will convert any single or two-phase tripping into three-phase tripping before initiating the reclosure.

For schemes with two circuit breakers, reclosure of the second circuit breaker can be simultaneous with the first circuit breaker or sequential.

Single or three-phase auto-reclosing and comprehensive analysis

LFAA offers single and/or three-phase auto-reclosing. This relay, suitable for feeders controlled by one or two circuit breakers, has automatic scheme documentation via a ladder diagram. It also provides a comprehensive analysis of attempts to carry out auto-reclose.