• Switching mode power supply design
• User selectable operating/monitoring voltage range：3P3W：208, 220, 240, 380, 400, 415, 480V
• 3-phase voltage fault monitoring：Phase reversal, Phase loss, Over voltage, Under voltage
• Over voltage：2~22%
• Under voltage：2~22%
• Over/under voltage trip delay time：0.1~30 sec
• Phase loss delay time：0.2 sec fixed
• Reset delay time：1sec