WOODWARD LS5 8440-2178  Circuit Breaker Control & Protection

Woodward’s LS-5 Series relays are synchronizer controllers with integrated mains de coupling and protection features. The applications range from independent synch check relay to complex power management with multiple utility feeds, bus tie-breakers and group breakers in combination with Woodward’s easYgen-3400XT/3500XT equipped genset controllers. Wiring efforts are reduced to a minimum, since only one CAN bus connection is required between all LS-5 and easYgen controllers to transmit AC meas urement signals, I/O states, flags, etc.

The LS-5×1 devices manage synchronization, loading and un-loading on each bus seg ment and send the required voltage, frequency and phase angle references via CAN bus to the easYgen-3400XT/3500XT genset controllers. When serving an incoming mains breaker it automatically detects mains failure, performs mains decoupling and sends the start signal to the easYgen. The LS-5×1 is software selectable to be applied as an inde pendent synch check relay, mains circuit breaker control or bus tie-breaker control thereby providing exceptional versatility and value for OEM switchgear builders, genera tor packagers, and system integrators.

The LS-5×1 Series is available in two different mounting styles. An LS-521 with a plastic housing and graphic LCD display is designed to be mounted on the cabinet’s front door.

An LS-511 with an aluminum powder coated housing without display is designed to be back panel mounted.

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