3-phase voltage monitoring relays 3-phase voltage supervision in AC networks › Under voltage supervision › Over voltage supervision › Monitoring for absence of voltage Datasheet IN-EUW-DB-UK-

voltage monitoring in AC Networks EUW3 - Under and over voltage supervision › Voltage supervision per single phase › Switching thresholds adjustable › Monitoring for asymmetry, phase failure and phase sequence › LED operating display and signal contacts designed as potential-free double changeover contacts The EUW3 monitors three-phase networks for undervoltage and overvoltage, whereby both switching points can be set independently of each other. Here, range overlaps are to be avoided. Monitoring is performed separately for each phase, so that actual asymmetry or even phase failure is detected....

voltage monitoring in AC Networks Technical Data EUW3 Article number Supply voltage UB Nominal voltage Voltage range Power consumption Buffer time for UB Min. charging time until buffer ready again Monitoring inputs Voltage range Max. input current Switching hysteresis Switching accuracy Monitoring criteria Relay outputs Voltage range Max. load current Response delay Displaying elements Ambient conditions Operation temperature Max. rel. humidity AC voltage resistance between measuring inputs and relay contacts as well as the open relay contacts EMC compatibility acc. to Mechanical data Connection...

voltage monitoring in AC Networks EUW4 - Under voltage supervision › Voltage supervision per single phase › Switching thresholds adjustable or optionally fixed › Monitoring for asymmetry, phase failure and neutral conductor breakage › LED operating display and signal contacts designed as potential-free double changeover contacts The EUW4 monitors three-phase networks for undervoltage. The monitoring is not only carried out for the average value of the voltages, but separately for each phase. This detects an asymmetry of the phases or even a phase failure. The switching threshold is, depending...

voltage monitoring in AC Networks Technical data EUW 4 Article number Monitoring inputs Voltage range ULxLy Power frequency Measuring voltage Switching point adjustment range max. power consumption Switching point hysteresis Switching point accuracy Monitoring criteria Relay drops out at Undervoltage, phase failure Undervoltage or failure of one phase Response delay (Phase failure / Neutral wire break) 50 ms 150 ms (Asymmetry of a phase of 20%) green LED for operating display - for 3-phase networks with neutral or star point - suitable for automatic switching on of safety lighting according to...

voltage monitoring in ac networks EUW4S - Monitoring for absence of voltage › Switching threshold adjustable or optionally fixed › LED operation display › Signal contacts designed as potential-free double changeover contacts The voltage monitor monitors 110 V three-phase networks for absence of voltage.Only when the voltages of all phases fall below the US threshold is the absence of voltage signaled by the red operating indicator going out and the relay dropping. Neutral break has no effect on this signaling. The threshold US refers to the delta voltage ULxLy and, depending on the design variant,...

voltage monitoring in ac networks Technical Data EUW4SA1S/2S Article number Supply/measuring voltage (Chained voltage ULxLy, RMS) maximum minimum Switching threshold US Hysteresis Response delay Load capacity of the relay contacts Maximum switching voltage Power consumption Environmental conditions Operating ambient temperature Storage temperature Relative humidity AC voltage resistance between measuring inputs and relay contacts AC voltage resistance of the opened Relay contacts EMC compatibility according to Mechanical data Terminals Dimensions (H x B x T) [mm] Mounting Weight Safety class...

voltage monitoring in ac networks Dimensional drawing and terminal assignment Measuring voltage Operating voltage Dimensions in mm Subject to technical changes without prior notice Ordering codes Low- and high-voltage supervision Article number Short description 11EUW3000U 50 … 460 V 50/60 Hz, switching points adjustable 11EUW3000S1 50 … 460 V 50/60 Hz, switching points adjustable, extended buffer time of the operating voltage Low-voltage supervision Article number 11EUW4000Q 11EUW4000U 11EUW4000U2 11EUW4SA0S Short description 80 … 120 V 50/60 Hz, switching points adjustable 270 … 420 V 50/60...