MR-EU31UW1P monitoring relays Multifunctions monitoring relays (AC voltage monitoring in 1-phase network and 3-phase - 3(N)~ 400/230 V, with adjustable thresholds) Monitoring of phase sequence and phase failure Connection of neutral wire (optional) Timing adjustment of tripping delay Supply voltage = monitoring voltage Output: 1 CO (1 changeover contact) Cover - installation module, width 17,5 mm Direct mounting on 35 mm rail mount acc. to PN-EN 60715 Recognitions, certifi cations, directives: Output circuit - contact data Number and type of contacts 1 CO Rated voltage 250 V AC Max. breaking capacity AC1 1 250 VA (5 A / 250 V AC) Max. operating frequency at resistive load 100 VA 3 600 cycles/hour at resistive load 1 000 VA 360 cycles/hour Input circuit Supply voltage = monitoring voltage Rated voltage AC 230 V, 3(N)~ 400/230 V Operating range of supply voltage 0,7...1,3 Un Rated power consumption AC 8,0 VA / 1,0 W Range of supply frequency AC 48...63 Hz Duty cycle 100% Measuring circuit measuring variable 3(N)~, sinus, 48...63 Hz measuring inputs = supply voltage AC: 230 V, 3(N)~ 400/230 V terminals (N)-L1-L2-L3 overload capacity determined by tolerance specifi ed for supply voltage swiching threshold Us MIN: 0,7...1,2 Un MAX: 0,8...1,3 Un Insulation according to PN-EN 60664-1 Rated surge voltage 4 000 V 1,2 / 50 s Overvoltage category III Insulation pollution degree 2 if built-in: 3 General data 5 Electrical life resistive AC1 > 2 x 10 1 000 VA 7 Mechanical life (cycles) > 2 x 10 Dimensions (L x W x H) 87 x 17,5 x 65 mm Weight 72 g o Ambient temperature storage -25...+70 C o operating -25...+55 C Cover protection category IP 20 PN-EN 60529 Relative humidity 15...85% Shock resistance 15 g 11 ms Vibration resistance 0,35 mm DA 10...55 Hz Meassuring circuit data Functions UNDER, UNDER+SEQ, WIN, WIN+SEQ SEQ - monitoring of phase sequence and phase failure connection of neutral wire (optional) Range of delay timing adjustment tripping delay: 0...10 s Base accuracy 5% (calculated from the fi nal range values) Setting accuracy 5% (calculated from the fi nal range values) Repeatability 2% Temperature infl uence 0,05% / C Recovery time 500 ms LED indicator red LEDs MIN and MAX ON/OFF - indication of failure red LEDs MIN and MAX fl ashing - indication of tripping delay red LED SEQ ON - indication of the change of phase sequence yellow LED R ON/OFF - output relay status Phase sequence monitoring - selectable. Indication of relay status - according to the set threshold. 1 www.relpol.com.pl Export Sales Department phone +48 68 47 90 832, 951 e-mail: export relpol.com.pl 12.01.2015 MR-EU31UW1P monitoring relays Functions For all functions the LEDs MIN and MAX are flashing alternating (the Loss of neutral wire by means of evaluation of asymmetry. relay is fallen off), when the minimum value for the measured voltage was chosen to be greater than the maximum value. If a failure already exists, when the device is activated, the output relay R remains in off- position Shift of neutral point caused and the LED for the corresponding threshold is illuminated. The device by asymmetrical phase loads includes seperately every phase voltage (L-N) and monitors it according and missing neutral wire to the selected function (UNDER or WINDOW). UNDER, UNDER+SEQ - Undervoltage monitoring, undervoltage monito- ring with monitoring of phase sequence. The device monitors every phase (L1, L2 and L3) against the neutral wire N. A shift of neutral point occurs by an asymmetrical phase load if the neutral wire breaks in the power line. If one of the phase voltages exceeds the value adjusted at the trip point, the set interval of tripping delay (Delay) begins (red LED MIN or MAX flashes). After the interval has expired (red LED MIN or MAX illumi nated), the output relay switches into off-position (yellow LED not illuminated). When the measured voltage (one of the phase voltages) falls below the Front panel description value adjusted at the MIN-regulator, the set interval of the tripping delay (Delay) begins (red LED MIN flashes). After the interval has expired (red LED MIN illuminated), the output relay R switches into off-position (yellow LED not illuminated). The output relay R switches into on-position again (yellow LED illuminated), when the measured voltage (all phase voltages) exceeds the value adjusted at the MAX-regulator. WIN, WIN+SEQ - Voltage monitoring in windowfunction between MIN and MAX values, voltage monitoring in windowfunction between MIN and MAX values with monitoring of phase sequence. Tripping delay- Red LED -adjusting knob MAX threshold- Red LED -adjusting knob The output relay R switches into on-position (yellow LED illuminated), when MIN threshold- the measured voltage (all phase voltages) exceeds the value adjusted at Red LED -adjusting knob the MIN-regulator. When the measured voltage (one of the phase voltages) exceeds the value adjusted at the MAX-regulator, the set interval of tripping delay (Delay) begins (red LED MAX ashes).fl After the interval has expired Function-adjusting (red LED MAX illuminated) the output relay R switches into off-position Yellow LED knob (yellow LED not illuminated). The output relay switches into on-position again (yellow LED illuminated) when the measured voltage falls below the value adjusted at the MAX-regulator (red LED MAX not illuminated). When the measured voltage (one of the phase voltage) falls below the value adjusted at the Min-regulator, the set interval of tripping delay (Delay) begins again (red LED MIN flashes). After the interval has expired (red LED MIN illuminated), the output relay R switches into off-positon (yellow LED not illuminated). SEQ - Phase sequence monitoring. Phase sequence monitoring is selectable for all functions. In single phase circuit, the monitoring of phase sequence must be disconnected. If a change in phase sequence is detected (red LED SEQ illuminated), the output relay R switches into off-position after the set interval of tripping delay (Delay) has expired (yellow LED not illuminated). U - supply voltage R - output state of the relay MIN, MAX - relay status SEQ - phase sequence 2 www.relpol.com.pl Export Sales Department phone +48 68 47 90 832, 951 e-mail: export relpol.com.pl 12.01.2015