3 Phase Voltage Monitoring Relays System-EUW 3

IN-EUW-DB-UK-00016.03.2009 Datasheet 3-phase voltage supervision in AC networks› Voltage supervision per individual phase › Switching threshold adjustably or optionally fixed› Supervision on asymmetry, phase failure and optional neutral wire break and direction of rotation› Operating indicator and signalling contacts designed as potential-free change-over contact 3 phase voltage monitoring relayspage 2 of 43 PhAse voltAge suPervision in AC networks under and over voltage supervision with euw 3The EUW 3 supervises three-phase networks on under and overvoltage, in which both switching points can be indepen-dently adjusted by each other. Overranging has to be avoided. The supervision is separately carried out for every phase so that the actual asymmetry or even phase failure is recognized. In addition direction of rotation (phase sequence) and neutral wire break is monitored. Every error is shown by the corresponding red LED lighting up. In the normal operation the output relay is pulled on and the power light (green LED) lights up. In the fault case as well as at loss of the supply voltage the relay drops off and the operating light goes out. The inserted hysteresis prevents the permanent condition change by varying measuring voltage around a switching point. With the from each other separated adjustable response and release delays short net break downs or asymmetries can be avoided specific on switching on actions. technical data euw 3If not indicated differently, the data refer to a sinusoidal alternating voltage with a frequency of 50/60 hz.Custom-built models and special voltage on enquiry.Article No. 11EUW3000USupply voltage Nominal voltage Voltage range Power consumption230 V 50/60 Hz195 … 253 V= 1,5 VAMonitoring inputs Voltage range max input current Switching hysteresis Switching accuracy50 … 460 V 50/60 Hz, adjustable= 0,5 mA= 6%= 4%Monitoring criterias Under and overvoltage, phase failure, phase sequenceRelay outputs Voltage rangeMax. load currentResponse delay0 … 250 V AC/DC4 A @ 0 … 250 V AC 50/60 Hz4 A @ 0 … 24 V DC0,2 … 10 s, adjustableDisplaying elements 3 red LED’s for • Under voltage• Over voltage• Direction of rotationAmbient conditions Operation temperature Max. rel. humidity-20°C ... +60°C non condensingMaximum 75% average meanMechanichal data Connection terminals Dimensions (H x W x D) [mm] Mounting WeightScrew terminals75 x 45 x 110on C-DIN rail nach = acc. to EN 50022-35approx. 0,3 kg1 green LED for operation indicationpage 3 of 4voltAge monitoring relAys sub-voltage supervision with euw 4 technical data euw 4The EUW 4 supervises three-phase networks on undervoltage. The supervision isn‘t carried out only for the mean average value of the voltage but for every phase separately. By this means an asymmetry of the phases or even phase failures become recognized. The switching threshold is, depending on design variant either fixed or by a frontal potentiometer adjustable. In addition the neutral wire is supervised on wire breakage. At measuring voltages above the switching point the output relay is pulled in with 2 change-over contacts and the operating light (green LED) shines. When one or several phase voltages sink below the switching point, the relay drops off and the operating light goes out. The inserted hysteresis prevents the permanent condition change by varying measuring voltage around the switching point. * sinusoidal alternating voltage with a frequency on 50 / 60 Hz** at a sinusoidal alternating voltage of 50 HzCustom-designed and custom voltages on request Article No. 11EUW4000Q 11EUW4000U 11EUW4000U2 11EUW4SA0SSupply voltage The supply voltage of the monitoring relays is carried out of the measuring voltage. An auxiliary voltage is not necessary. Monitoring inputs Voltage range Switching threshold max. power consumption Switching hysteresis Switching accuracy3 x 80 ... 120 V* 3 x 70 ... 105 V*< 1,3 VA= 7 %< 8 %3 x 270 ... 420 V* 3 x 240 ... 400 V*< 2,3 VA @ 350 V** < 3,5 VA @ 460 V** = 7 %< 3 %3 x 185 ... 345 V* 3 x 160 ... 300 V*< 2,3 VA @ 265 V** < 3,8 VA @ 345 V**= 8 % < 3 %3 x 100 ...115 V* fixed 3 x 30 V*approx. 1,4 VA**approx. 4 %approx. 2%Monitoring criterias Undervoltage, phase failureResponse delay (phase failure / neutral wire brake) 50 ms(Asymmetry of one phase about 20%) 150 msDisplaying elements green LED for operation indicationOperating conditions - for 3-Phase mains with neutral wire or star-wiring- suitable for automatic switching on safety lighting acc. to VDE 0108Ambient conditions Operating temperature Max. rel. humidity-20°C ... +50°C non condensingMaximum 75% average meanLoad on relays contacts 4 A @ 0 … 250 V AC* and 0 … 24 V DC 1 A @ 60 V DC0,3 A @ 110 V DC0,1 A @ 250 V DCAlternating dielectric strength between measuring inputs and relay contacts as well as between neighboring relay contacts2,5 KVeff 50 Hz 1 minAlternating dielectric strength of open relays contacts 2,0 KVeff 50 Hz 1 minMechanical data Connection terminalsDimensions (H x W x D) [mm] MountingWeightScrew terminals90 x 35 x 58On C-DIN rail acc. to EN 50022-35; suitable for mounting in distribution cabinetapprox. 0,2 kg3-PhAse voltAge suPervision in AC networks ContactElektra Elektronik GmbH & Co Störcontroller KG | Hummelbühl 7-9 | 71522 Backnang | GermanyTel. +49 (0) 7191.182-0 | Fax. +49 (0) 7191.182-200 | info@ees-online.de | www.ees-online.de Dimensional drawingeuw 3euw 4Dimensions in mmSubject to technical changeswithout prior notice. terminal assignmenteuw 3 euw 4