The Model 265 3-Phase Monitor continuously monitors 3-phase Wye or Delta systems for phase loss, low voltage and phase reversal. When properly adjusted, the Model 265 Monitor will detect phase loss on a loaded motor even when regenerated voltage is present. The solid-state sensing circuit drives an internal relay, in a fail-safe configuration, i. e. , the relay is energized when correct voltage and phase rotation are applied. Operating power for the Model 265 is drawn from the 3-phase lines being monitored. An adjustable timer delays restarting of the load, allowing up to five minutes for compressor head pressures to bleed off, in the event of short-term power failures. The Model 265 Monitor is not sensitive to line current, and can be used with any size motor or compressor. Automatic and manual reset versions are available.
