Aparamenta y Protección

KYN28A-12 closed switchgear cabinet for maintenance planning

Switchgear Maintenance Checklist: Maintenance Guide

A switchgear maintenance checklist should document the equipment being serviced, the authorized work scope, energy isolation, condition findings, tests, corrective actions and the final return-to-service decision. It is not a universal list of tasks to perform inside an energized cabinet.…

LBAJI product equipment illustrating ansi relay numbers

ANSI Relay Numbers: Standards Guide

ANSI relay numbers are standardized device function numbers used on power-system drawings and protection documentation. They identify functions such as circuit breakers, overcurrent elements and differential protection,…

LBAJI product equipment illustrating contactor relay

Contactor Relay: Guide

A contactor is an electrically operated power switch; a control relay is generally intended for lower-current logic and signaling duties. They may look similar, but contact materials, arc control, utilization category,…

LBAJI product equipment illustrating protection relays

Relés de protección: Guía

Protection relays measure electrical quantities and command breakers when their logic indicates an abnormal condition. A relay is only one part of a protection system; instrument transformers, DC control power, trip…

LBAJI product equipment illustrating overload relay

Relé de sobrecarga: Guía

Un relé de sobrecarga protege un motor contra sobrecorriente sostenida y sobrecalentamiento; normalmente no está destinado a eliminar un cortocircuito. Funciona con un contactor y un dispositivo de protección contra cortocircuitos aguas arriba, abriendo el...

LBAJI product equipment illustrating direct current circuit breaker

Interruptor automático de corriente continua: Guía

Un interruptor automático de corriente continua debe interrumpir la corriente continua sin depender de los pasos por cero naturales de la corriente disponibles en los sistemas de corriente alterna. La tensión nominal, la polaridad, el diseño de control de arco, el comportamiento de tiempo-corriente y la disponibilidad...

LBAJI product equipment illustrating arc fault circuit breaker

Disyuntor por falla de arco: Guía de solución de problemas

Un disyuntor por fallo de arco combina la protección contra sobrecorriente con componentes electrónicos que reconocen los patrones de corriente asociados con los arcos peligrosos. La resolución de problemas debe distinguir un fallo de cableado genuino del comportamiento de la carga,…