Carlo Gavazzi has expanded their already comprehensive range of three-phase monitoring relays to include the DPB71 and the DPC Series. These are three phase devices which are ideal for protecting machinery and people in instances where three phase voltage is used, such as with industrial automation machinery, switchgear and elevators/escalators.
 

The DPC01 Series is a True RMS monitoring device for over and under voltage, phase sequence, phase loss and asymmetry on 3 phase and 3 phase + neutral systems. It is capable of monitoring 50-60 Hz, but is also available in 50-400 Hz versions. It is available in ranges from 115VAC delta voltage through 690VAC delta or star voltage. The relay provides individually adjustable setting for undervoltage and overvoltage, and each setting has an adjustable 0.1 to 30 second adjustable delay. The DPC01 also feature three diagnostic LEDs (amber, red and green), as well as an 8A SPDT output. It also offers the choice of a one or six second fixed delay upon relay energization.
• TRMS 3-phase over and under voltage, phase sequence, phase loss and asymmetry monitoring relay
• Detect when all 3 phases are present and have the correct sequence
• Detect if all the 3-phase-phase or phase-neutral voltages are within the set limits
• Detect if asymmetry is below set value
• Separately adjustable setpoints
• Separately adjustable delay functions (0.1 to 30 s)
• Output: 2 x 8 A relay SPDT NE
• For mounting on DIN-rail in accordance with DIN/EN 50 022 (DPC01) or plug-in module (PPC01)
• 45 mm Euronorm housing (DPC01) or 36 mm plug-in module (PPC01)
• LED indication for relays, alarm and power supply ON

Courtesy of  Carlo Gavazzi