Press Release Summary:
SLU Universal Phase Monitor/Relay protects against over/under voltage, phase loss, unbalance and phase sequence. Universal input allows for operation from 200 to 500 V, three phase. Unit is equipped with adjustable restart delay and adjustable fault delay. Both DELTA and WYE systems may be monitored.
Original Press Release:
SLU Universal Phase Monitor/Relay
Lancaster, PA ...ATC-Diversified Electronics is pleased to announce their new SLU Universal Phase Monitor/Relay. Like our other quality phase monitors, the SLU protects against over/under voltage, phase loss, unbalance and phase sequence. Unique features of the SLU include universal input, which allows for operation in a wide voltage range (200-50OV, three phase). Also, included is adjustable restart delay and adjustable fault delay
The SLU's Line-Line voltage adjustment is set to the appropriate nominal voltage and frequency scale. With normal operating voltage present on all three phases in the proper sequence, the internal relay will energize. When an incorrect phase sequence, phase loss, under or over voltage, frequency shift or unbalance greater than the settings, the internal relay will de-energize after the adjustable fault delay. When all conditions return to normal the relay will energize when the adjustable Restart Delay has expired.
Both DELTA and WYE systems may be monitored.