Woodward LS-5 Breaker Controller

LS-5 Breaker Controller

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 measurement signals, I/O states, flags, etc.

The LS-5×1 devices manage synchronization, loading and un-loading on each bus segment

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 independent synch

check relay, mains circuit breaker control or bus tie-breaker control thereby providing exceptional

versatility and value for OEM switchgear builders, generator 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.

Features and Functionality

• Compatible with the easYgen-3000XT and 3500XT (software revision >2.10x required)

• Compatible with group controller

• Synchronize forward and backward with easYgen-3000xt

• Segment control for load sharing

• Protection elements (including ROCOF, phase shift, and flexible limits for custom protection)

• RS-485 interface for remote control and visualization

• Synch-check operation without easYgen-3000xt

• Phase angle compensation

• Minimum gensets (with group controller) = 496

• Maximum gensets (without group controller) = 32

• Custom alarms

Additional features available based on the model of the breaker.