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MR-METI31 Directional Relay

Technical Manual

Issue 1.0, August 2021

ISSUE

1.0

DOCUMENT REF. NUMBER

OMR0138

DATE

11/08/2021

APPLICABLE RELAY FIRMWARE VERSION(S)

V0.064

Summary of Contents for MR-METI31

Page 1: ...MR METI31 Directional Relay Technical Manual Issue 1 0 August 2021 ISSUE 1 0 DOCUMENT REF NUMBER OMR0138 DATE 11 08 2021 APPLICABLE RELAY FIRMWARE VERSION S V0 064...

Page 2: ...roved Date 1 0 Initial Release GM JS PY 11 Aug 21 2021 PBSI Group Ltd All rights reserved No part of this publication may be reproduced stored in a retrieval system published or transmitted in any for...

Page 3: ...32 USB Baud Rate 15 RS232 USB Protocol 15 RS232 USB Parity 15 Serial Delay 15 Fast Scan 1 to 3 16 Max Scan Time 16 7 5 I O Settings Input Output Settings 16 7 5 2 Relay Outputs 16 7 6 System Settings...

Page 4: ...es Case Dimensions 30 Appendix 2 31 Termination Numbers MR METI 31 31 Appendix 3 32 Connection Example 32 Appendix 4 33 Abbreviation KEY 33 Appendix 5 34 Factory Default Procedure 34 Appendix 6 35 Dis...

Page 5: ...Ard Trip 2 MR METI Principles 2 1 Area Of Application The relay type MR METI is designed specifically for directional control of the overcurrent and earth fault relay type MCGG Retrofit relays Each re...

Page 6: ...ase and cover see Appendix 1 for dimensions To ensure that current transformer connections cannot be open circuited when the module is being withdrawn from case short circuiting contacts are mounted o...

Page 7: ...ue 1 0 August 2021 2 3 Principle of operation Examples Typical characteristics of earth fault voltage polarised unit relay characteristic angle 60 Typical characteristic of phase fault voltage polaris...

Page 8: ...0x Phase CT Primary Amps Full Scale 20 x Phase CT Primary Amps Setting Accuracy 3 at Phase CT Primary amps VOLTAGE MEASUREMENT Method True RMS Sample time 1ms Range 1V 130V AC Minimum Reading 1 of VT...

Page 9: ...uous CT input Thermal Withstand 250xIn half wave 100xIn for 1 second 30 x In for 10 second 4 x In cont ELECTROMAGNETIC COMPATIBILITY Electrical fast Transient Burst IEC 60255 22 4 IEC 61000 4 4 Class...

Page 10: ...ut Relays The MR METI 31 is provided with 3 Fixed output relays set to IArd Trip see section 7 5 2 5 5 RS485 Rear Port The RS485 port utilises a half duplex RS485 protocol allowing up to 32 units to b...

Page 11: ...ter Voltmeter Hours Run Indicator Operations Counter etc Helping to reduce the overall cost of the feeder panel and giving improved reliability by the reduction of separate components 6 1 LED Status T...

Page 12: ...tructure Using these soft keys provides for a very easy to use environment to effectively navigate the entire menu system Any description in the LCD window appearing to the LEFT in CAPITALS can be sel...

Page 13: ...gs structure The UP and DOWN buttons scroll through each sub menu heading The left button selects entry to each level The right button TOP restores the screen to the display scroll and menu prompt Id...

Page 14: ...r Save is pressed to store the new value and exit If an undesired value is inserted incorrectly use the Next button to skip past the last character to the left The Save option button now operates as a...

Page 15: ...it is connected RS485 Protocol The RS485 serial communications port may be configured to operate using a slave implementation of Modbus RTU or P B Engineering s own protocol P B Standard RS485 Parity...

Page 16: ...internal address in MR METI 31 and allows configurable data mapping between units Max Scan Time This setting need only be used in order to limit the amount of data traffic on a RS485 network Dynamic...

Page 17: ...trieve the password are to either read the information via the serial link or execute a Configuration Reset on the relay to restore all of the factory defaults see appendix 5 Contrast and LCD Backligh...

Page 18: ...nd the time on the relay Chronovision When enabled allows the real time clock to be updated via the broadcast GPS sync signal from Chronovision Screen Saver and Screen Saver Time To help extend the li...

Page 19: ...thers The available action the type of reset the various threshold levels and trip timers for each and every protection function can be found in section 7 7 This section describes in detail what each...

Page 20: ...eset This option when Enabled allows a reset of a fault to be carried out through the serial communication port of the relay 7 7 1 Reverse Directional Overcurrent Fault IArd The MR METI 31 can be conf...

Page 21: ...w seconds to delete and update on the LCD 7 9 Alarm History This screen allows access to the relays Alarm History data Up to 32 Alarm events can be registered in this menu screen starting with the mos...

Page 22: ...er of the unit will be required to do this In addition to the calibration of analogue inputs the Calibration Sub Menu provides some useful diagnostic tools After entering the password the Calibration...

Page 23: ...ax Scan Time FEEDER SETTINGS DISTURBANCE RECORDER OPTIONAL Password Engineer Password Change P W Backlight Contrast Default Page Default Return Time Sync Delay S W Ver Unit ID Activation Keys Time Dat...

Page 24: ...1ms Fastscan 1 0 255 2 0 Fastscan 2 0 255 2 0 Fastscan 3 0 255 2 0 Max Scan Time 1 30s 1s 2s Feeder Settings CT Primary 1 5000A 1A 100A VT Primary 100 33000V 5V 415V VT Secondary 100 110V 1V 100V Sys...

Page 25: ...hnical Manual Issue 1 0 August 2021 9 2 MR METI 31 Control Setting Summary Range Step Default User Setting Relay Outputs Relay Red Phase Fixed IArd IArd Relay Yellow Phase Fixed IArd IArd Relay Blue P...

Page 26: ...st 2021 9 3 MR METI 31 Protection Setting Summary Selectable Fixed Trip Alarm Block Auto Panel Serial ANSI No Protective Function Variable Range Step IArd Charact Angle Trip Level 0 60 0 30 45 or 60 S...

Page 27: ...0 August 2021 9 4 MR METI 31 Blank Protection Setting Summary Selectable Fixed Trip Alarm Block Auto Panel Serial ANSI No Protective Function Available Action Variable User Setting IArd IArd Trip Leve...

Page 28: ...tion maintenance port located on the front of the relay operator panel The self supervision feature within the MR METI 31 is designed to check the operation of the hardware and software functions with...

Page 29: ...error trapped D16 65536 Watchdog timer overflow D17 131072 Illegal Opcode Detected D18 262144 Stack Under Overflow detected D19 524288 RAM Online Check Failed D20 1048576 Online Boundary Check for set...

Page 30: ...0 5 to 2 5mm2 The rear terminal block accepts both pre insulated screw and push on blade type connectors Each terminal having 1x M4 screw type and 2x 4 8mm blade type complying BS5057 Wiring torque o...

Page 31: ...x 2 Termination Numbers MR METI 31 For Sample connections please see Appendix 3 RLY Red Ph N O RLY Yellow Ph N O RLY Blue Ph N O RLY Blue Phase N O RLY Yellow Ph N O VE VE RS485 V1 L V1 N V2 L RLY Red...

Page 32: ...Page 32 MR METI31 Technical Manual Issue 1 0 August 2021 Appendix 3 Connection Example Example 1 Typical application diagram Directional relay MR METI31 Two phase and earth fault...

Page 33: ...Alrm Alarm Hlth Healthy Ser Tmout Serial Timeout Ser Serial DI1 Digital Input 1 DI2 Digital Input 2 IRF Internal Relay Fault Vin Measured Voltage Input Indic Indicator Trp Trip Alm Alarm ACB Air Circu...

Page 34: ...led This is useful if the engineering password has been disabled and password has been enabled and changed from the default password to an alternative which has been forgotten By defaulting the relay...

Page 35: ...elays vision control Vision control 3 is a multifunction tool that can be used to download the disturbance data file and using the file downloaded interrogate the data retrieved Fault Disturbance Reco...

Page 36: ...This is supplied to provide a demo of the viewer facility if no disturbance files have been retrieved The selected Comtrade File is Loaded when Open is Clicked The Disturbance Records are displayed as...

Page 37: ...wn below Click on Zoom Reset to view full Trace length Move the cursor over the waveform to find value and name of the trace as shown below Cursor Position is also displayed when clicked on the wavefo...

Page 38: ...d at the end of the waveforms as shown below Click on Print to send Command to printer for trace to be printed according to paper size Click Save Record as Picture to save all the waveforms in the vie...

Page 39: ...ng Rear or Front Port by clicking Rear Front Port Button It is recommended to download the disturbance trace from rear RS485 port For shorter records upto 1 sec can also be downloaded from front port...

Page 40: ...the Trace to view details in brief regarding the trace Specify a file name and Press Download Trace Button Trace Download Starts and is saved at the location specified in File Path Allow download to c...

Page 41: ...be checked prior to reinstating the product in service If unsure contact P B for advice Disposal P B are committed to manufacturing practices which do not result in pollution or cause damage to the en...

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