P&B MPR3E5 Manual Download

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Issue H

MPR 3E5

Digital Motor Protection Relay

P&B Engineering
Belle Vue Works
Boundary Street
Manchester
M12 5NG

Tel: 0161 230 6363

Summary of Contents for MPR3E5

Page 1: ...Issue H MPR 3E5 Digital Motor Protection Relay P B Engineering Belle Vue Works Boundary Street Manchester M12 5NG Tel 0161 230 6363...

Page 2: ...LEMENTS 11 7 2 RELAY DISPLAY AND SETTING PROCEDURE 11 7 2 1 Display mode 1 11 7 2 2 Setting Mode 2 11 7 3 SETTING PROCEDURE 13 7 3 1 t6x Setting 13 7 3 2 Speed Switch 13 7 3 3 Full Load Current Settin...

Page 3: ...2 7 6 TEST TRIP 23 7 7 RESET 23 7 7 1 Hand reset 23 7 7 2 Auto reset at Power Up 23 7 8 PHASE ROTATION 23 7 9 SETTING VALUE CALCULATION 23 8 RELAY CASE 24 8 1 INDIVIDUAL CASE 24 8 2 RACK MOUNTING 24 8...

Page 4: ...ties MRI V Voltage Dependent Overcurrent Relay MREF Restricted Earth Fault Relay MRMF Mains Failure Relay MRNS Negative Sequence Relay MRRP Power Relay MRCS Check Synchronising Relay MRFF Field Failur...

Page 5: ...a speed switch input Fully Programmable Output Relay operation Fault trip inhibit setting for Contactor Applications 3 Features and characteristics Complete digital processing of the sampled measured...

Page 6: ...ternative E F connection for CBT Rstab Fig 1 Connection Diagram for use with 3 line CT s and alternative core balance CT 18 POWER SUPPLY 1 2 CASE Supply MPR 3E5 Typical Earthing Shown 7 5 3 6 4 8 10 1...

Page 7: ...t transformers 4 1 2 Output relays The MPR 3E5 has three output relays with single or dual pole change over contacts as detailed in the previous diagram and summarised below Tripping relay 2 Alarm rel...

Page 8: ...el Because of the large adjustment possibilities the data on the MPR3E5 is split into a number of related groups Mode 1 Display This shows the analogue values being read by the Relay It is accessible...

Page 9: ...rmal Capacity L1 L2 L3 Green Flashing Actual Unbalance I2 Total Number of Starts OPS HR Green Total Hours Run OPS HR Green Flashing Latest Start Time in seconds ST Green Relay Address For Communicatio...

Page 10: ...4 Green Flashing High Set O C In 5 Green High Set O C Time 5 Green Flashing Undercurrent FLC 6 Green Undercurrent Time 6 Green Flashing Number of Starts hr 7 Green Start Inhibit Time 7 Green Flashing...

Page 11: ...inscription The first row of four LEDs to the left of the display are tri coloured green and yellow indicate measuring and red indicates a fault condition The LED marked RS indicates active serial dat...

Page 12: ...d out by the micro controller digitally The relay program located in EPROM allows the CPU of the micro controller to calculate the reactance values in order to detect a possible fault For the calculat...

Page 13: ...ding LED illuminates and the measured or present set value of the selected parameter is indicated on the display This set value may then be increased or decreased by pressing the UP or DOWN buttons re...

Page 14: ...Low Set O C Time 4 Green Flashing 0 5 5 0 secs 0 5 sec 0 5 sec High Set O C In 5 Green 200 1200 of In OFF 50 OFF High Set O C Time 5 Green Flashing 0 0 1 0 Second 0 1 sec 0 1 sec Undercurrent FLC 6 G...

Page 15: ...7 3 2 1 A Starting Stall Note that the action of the speed switch is ignored for the first period of a start determined by half the t6x setting in seconds After this should a starting stall develop th...

Page 16: ...er hour the motor will make can be limited by the MPR3E5 The starting energy is integrated on a time basis separately from the thermal overload model This parameter can also be set to off in which cas...

Page 17: ...tween the maximum and minimum measured line currents and the following formula a For Line currents above 25 FLC to 100 FLC The unbalance feature is inhibited below 25 FLC b Between 1xFLC and 2 5xFLC c...

Page 18: ...voiding trips due to the asymmetrical transient portion of the starting current 7 3 16 Low Set Overcurrent This feature allows a quicker trip time for fault currents or overloads of a medium magnitude...

Page 19: ...ber of Starts Trip 8 Undercurrent Trip 4 Phase Rotation 2 Relay Energises on TRIP 1 Y 1 161 By default the Trip matrix is set to 255 i e all trips enabled energise on trip 7 4 2 Programmable Relay Mat...

Page 20: ...nge the state of the Alarm Relay 7 4 4 Earth fault parameters Matrix Ennn This setting range 000 or 129 to 255 sets the Earth Fault source Core Balance or Residual connection and if Core Balance the P...

Page 21: ...levant in this case 7 4 5 Trip Reset Matrix Rnnn This setting range 000 to 255 sets which Trips are to be self reset those not selected have to be manually reset Example To configure the relay such th...

Page 22: ...the value set would be 192 Action Numerical Value Set Y N Value 50 128 Y 128 25 64 Y 64 Reserved 32 Reserved 16 Reserved 8 Reserved 4 Reserved 2 Reserved 1 192 If neither 50 or 25 are selected then Sp...

Page 23: ...gin The inhibit level can be selected in the range 400 to 1200 of In in steps of 100 by setting the last 4 bits in the matrix below Example To configure the relay such that pick up occurs at 1 1 x FLC...

Page 24: ...Single phase allows undercurrent trips on one phase LI in 3 phase use undercurrent is based on the lowest of the 3 phase currents Comms test allows test of the hardware only with no other equipment re...

Page 25: ...ush buttons 7 7 Reset There are two ways in which to reset the MPR 3E5 relay 7 7 1 Hand reset By pressing the SELECT RESET for approximately 3 seconds the relay is reset 7 7 2 Auto reset at Power Up A...

Page 26: ...ower supply connected to terminals 1 2 Two auxiliary power supply versions are available Vaux 24V in a range from 16V to 60V AC 50 60Hz or in a range from 16V to 80V DC Vaux 110V in a range from 50V t...

Page 27: ...g and subsequent routine testing of the relay in situ although not essential it is recommended that a test socket type MMLG be installed on the panel This enables testing of the relay without unpluggi...

Page 28: ...2250A ODEN 2x Rapid Relay Test A rapid relay test can be carried out with the relay in normal protective service The relay test consists of a check of incoming current values by entering Display Mode...

Page 29: ...e of the machine must be obtained A setting for t6x may then be selected as follows For Direct On Line starters t6x 1 1 x start time For Star Delta starters t6x 0 35 x start time These are a guide onl...

Page 30: ...1 second 100 x In for 10 seconds 30 x In Continuously 4 x In 10 2 Auxiliary power supply Supply Voltage Vaux 24V in a range from 16V to 60V AC or in a range from 16V to 80V DC Vaux 110V in a range fro...

Page 31: ...ge for display of thermal capacity 143 Measuring range of In for other faults i e low set high set and earth fault is 16 x In unless inhibited for contactor applications Measuring range of earth fault...

Page 32: ...rating Time t6x seconds x T Curve Type Hot Cold Ratio 1 Cold Curve 2 Hot Curve 80 3 Hot Curve 50 4 Hot Curve 20 1 10 0 1 1 10 100 Multiples of FLC CURVE 2 CURVE 3 CURVE 4 CURVE 1 OVERLOAD PICKUP OF 1...

Page 33: ...cal life span 3 106 operating cycles electrical life span 2 105 operating cycles at 220 V AC 6A Contact material Silver Cadmium Oxide AgCdO 10 7 System data Design standard IEC 255 4 BS 142 Operating...

Page 34: ...tatic screening properties allowing many relays to be freely situated in close proximity and hazardous environments When the relay is inserted a leaf spring along the top edge of the module makes cont...

Page 35: ...connectors designed for 4mm screws Blade Each connection facilitates 2 pre insulated push on blades 4 8mm wide 0 8mm thick complying with BS5057 Combinations Each terminal will accept either 2 ring ty...

Page 36: ...ousing 19 Rack Flush mounting QUANTITY Aux Voltage 30V DC 80 265V AC DC L H Phase current 1 5 1A 5A Earth Phase current 1 5 1A 5A PBSI Ltd Trading as P B ENGINEERING Bell Vue Works Boundary Street Man...

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