3-phase monitoring relay with fault diagnostic 1. Device
Contents
1. Number and type of contacts 1x changeover contact Nominal current 8 A Switching power max AC 2000 VA Trigger current 30 A Nominal voltage max switching voltage 250 VAC 440 VAC Mechanical lifetime 3 x 10 Electrical lifetime 1x 10 250 VAC 8A Others Working temperature 20 55 C Storage temperature 40 70 C Working position any Mounting IEC 60715 DIN 35 Protection degree IP 40 on panel IP 20 terminals Electrical strength 4 kV Input wire diameter with without cavern max 2x1 5mm7 1x2 5mm max 2x1 5mm7 1x2 5mm Weight 15g Dimensions 90 x 18 x 65mm Standards IEC 60255 6 IEC 61010 BMR BMR export Balbinova 252 Horni lan 17 516 01 Rychnov n Kn 77900 Olomouc Czech Republic Czech Republic R Development and production of systems for measurement and control Tel 420 774 415 703 export bmr cz www bmr cz2. MRASP 3 phase monitoring relay with fault diagnostic 1 Device description version 1 3 Device is designed to monitor succession of phases L1 L2 L3 phase failure of any of phases and to control phase asymmetry Relay is equipped with visual fault diagnosis MRA3P is mainly designed for protection of three phase motors Relay has one output double throw contact 8 A Qo Important In the case of 3 wire connection internal over voltage protection does not work and lifetime of the device can be reduced However if this is the way how relay is connected then it is recommended to use external phase over voltage fault protection but not in the system with insulated tie down point Terminal description Terminal placement Connection diagram Supply controlled voltage x L2 Fault diagnostic m S Supply voltage indication g Phase asymmetry setting S Position OFF disconnects asymmetry detection S ii QO Outputs 2 Function After connection to the supply voltage green LED turns Phase failure Phase sequence ON If all phases are present together with correct a EN 7 EE sequence and if the asymmetry is within the preset L2 M E limit then relay will switch the output contact No 15 L3 M a 18 and red LED will turn off In the case there is a fault BEER es of any of phases or asymmetry is over preset limit red R eee a LED signalizes error type and relay will switch off the L output conta
3. ct No 15 16 Any voltage drop below Asymmetry _ sn 165 V is considered to be a phase failure Detection o and failure reaction is shorter then 100 ms R 3 LED diagnostic Range of ASYM off 5 20 Green LED on Presence of supply voltage Green LED off Supply voltage is not present Red LED on Fault condition detected irregular phase sequence Contact No 15 16 closed Red LED blinking Fault condition detected phase asymmetry Contact No 15 16 closed Red LED blinking 1x Fault condition detected phase 1 failure Contact No 15 16 closed BMR BMR export Balbinova 252 Horni lan 17 516 01 Rychnov n Kn 77900 Olomouc Czech Republic Czech Republic 1 Tel 420 774 415 703 export bmr cz www bmr cz B Red LED blinking 2x Fault condition detected phase 2 failure Contact No 15 16 closed Red LED blinking 3x Fault condition detected phase 3 failure Contact No 15 16 closed Red LED off Error condition not detected Contact No 15 18 closed 4 Technical features Parameter Value Supply controlled terminals L1 L2 L3 N Supply controlled voltage 3 x 400 V 230 V Power consumption max 1 5 VA Supply voltage indication green LED Maximum controlled voltage to N 269 V Toggle level fix 165 V Hysteresis fix 5 Asymmetry adjustable 5 20 Asymmetry disconnection adjustable OFF position Output parameters
Download Pdf Manuals
Related Search