User Manual
Contents
1. Communication address 1 byte 0 to 255 Function code 1 byte 0x10 Sfarting Address 2 bytes 0x0000 to 0xFFFE Quantity of Registers 2 bytes 0x0001 to 0x007b N Byte count 1 byte 2XN Register value N X 2 bytes Value CRC 2 bytes 2 bytes CRC Communication address 1 byte 1 to 255 Function code 1 byte 0x10 Quantity of Registers 2 bytes 0x0001 to 0x007b N CRC 2 bytes 2 bytes CRC Communication address 1 byte 1 to 255 Error code 1 byte 0x90 Exception code 1 bytes 0x01 or 02 or 03 or 04 CRC 2 bytes 2 bytes CRC respond with a broadcast command 39 9 2 MODBUS Register Address Dec Parameter Hex Format Units and Scale Range Product information Read only Function 03h or 04h 0 0000 1 0001 Device type main 2 0002 3 0003 Device type sub 4 0004 Version number main 5 0005 6 0006 7 0007 Version number sub 8 15 0008 000F Reserved m Measurements and relay status Read only Function 03h or 04h 16 0010 Relay status Bit 0 15 17 0011 Relay LED status Bit field Bit 0 3 18 0012 Input status Bit field Bit 0 1 19 0013 Output status Bit field Bit 0 3 20 0014 Active group 0 group 1 1 group 2 21 0015 Thermal State 0 9999 22 0016 IL1 high word 01 A 7 23 0017 IL1 low word lo uc do s dua 24 002. 1 9384 SJU9JUO O NUIJA puer g1dsIq neg D9 qESIp ae JULAI JI UMOYS JOU IIB SWH NUI DU JO DIOS y Ue y pueuog uv SOL OU Y unery z xny 7 xnv1 15 Wer y T xuy I xnv az u49 V JO TO I xnV lt lt 1 lt lt on TO WYL lt l lt on lt lt on lt lt lt lt lt lt p Xny 2pn 2u lt lt I lt lt n lt lt lt n Apa lt I i lt lt p dO 51 un mig stoung st 2ung lt p S 19591 II KLUPA Sun Key oun KUPA ANI LPA 9 4 JUIBIA S t c ARPA p L T L T BRA TL TO WYL 39018 lt lt 0 19018 lt ol 19018 lt lt lt I 190 48 lt lt I320IH 0 PWAL ISA 6 SOL lt P Pog wey duy sy 19111 XIV SOL stoung Sunpojg stoung 19sex srouny 2 1 xny st 9uny SS2IDDV Key l l l na dors add indu Ayed oun induy Iwy pneg gt TT Indu z 9 1 9 MEASUREMENTS Menu Various measurement values can be read under MEASUREMENTS menu The values are shown for illustrative purpose 1 MEASUREMENTS ILI 52 0A IL2 88 2A IL3 64 2A lo 4 23A Thermal 0 RST CLEAR 35 Frequency 50 01 Hz IL1 Max 120A IL2 Max 234A 3 Max 1 23kA lo Max 1 23kA IL1 Avg
3. Change Group by 0 Change group by menu 1 change group change by level of digital input Unsigned integer A scaled numeric value of certain units Eg 123 may represent 1 23A or 1 23s Refer to individual resisger s Units and Scale and range for detail Unsigned integer Cold Load Pick up element Bit 0 tl gt Bit 1 tl gt gt Bit 2 tl gt gt gt Bit 3 tlo gt Bit 4 tlo gt gt Bit 5 Thermal overload Unsigned integer Input n reset option For input function set as reset Bit 0 0 Not to reset trip alarm 1 to reset trip alarm Bit 1 0 Not to reset thermal state 1 to reset thermal state Unsigned integer Input n Blocked element For input function set as blocking Bit 0 tl gt Bit 1 tl gt gt Bit 2 tl gt gt gt Bit 3 tlo gt Bit 4 tlo gt gt Bit 5 Thermal overload Unsigned integer Relay n link element Bit 0 I gt Bit 1 lb gt gt lo gt lo gt gt Thermal overload Aux 1 Aux 2 TCS Idemand Bit 10 Remote trip
4. MK22001 Internal Relay Failure oa v k Digital Input 1 at Termination Resistor ss P RS485 L OO Communication 1 29 Digital Input 2 WISA ko cable shield Series resistor 18k Ohm 2W 2 Shorting terminal 18and20 7 required for gt 170 Vac 240 Vdc for the last relay to 270Vac 380Vdc 33 8 0 Technical Data RATINGS Auxiliary Supply MK2200L 150D Rated voltage 30 120 VDC Operating voltage 24 150 V DC MK2200L 240AD Rated voltage 100 240 V AC or 140 340 V DC Operating voltage 85 265 V AC or 110 370 V DC Rated frequency 50 or 60Hz Operating frequency 45 65 Hz Power consumption 8 VA max Current Inputs Rated current In 1 or 5 A by connection Frequency 50 or 60 Hz nominal Burden lt 0 025 VA 1A lt 0 3 VA 5A Thermal withstand 4x In continuous 40 x In for 2s 100 x In for Is Logic Inputs Input type Optically isolated Rated voltage 20 380 V DC 50 270 VAC Series resistor 18k Ohm 2W required for gt 170 V AC 240 V DC direct input Output Relay Trip Contact Relay R1 R2 IRF Relay Rated voltage 250 V AC DC Contact arrangement Change over Continuous carry gt SA Expected electrical life 100 000 operations at rated load Expected mechanical life 5x 10 operations R3 R4 Rated load resistive 5Aat 250 VAC 3A at30 V DC Expected electrical life 100 000 operations at rated load Expected mec
5. Output Relay 1 Heading of output relay 1 menu Press Enter to enter submenu content Set the function of output Relay 1 Note that Relay 1 function is locked to Trip Trip Set the reset method of relay Auto Unlatched Manual Latched Auto Assign I gt trip to the output relay 2 2 V e Es b gt m lt B ke w e TI lt 5 A lt 21 Assign I gt gt trip to the output relay tl gt gt Yes tl gt gt gt Assign I gt gt gt trip to the output relay Yes tlo gt Assign Io gt trip to the output relay Yes tlo gt gt Assign lo gt gt trip to the output relay Yes Thml OL Assign Thermal Overload to the output relay Yes tAux 1 Assign Aux 1 input trip to the output relay Yes tAux 2 Assign Aux 2 input trip to the output relay Yes Remote Assign Remote trip by communication to the output relay Yes Output Relay 2 to 4 Output Relay 2 to 4 menu has similar content The output Relay 2 menu content is shown below Heading of output Relay 2 menu Press Enter to enter submenu 7 2 Relay 2 K Set the function of output Relay 2 Possible settings are Trip Start Relay 2 Func and CBFP Start Reset Set the reset method of relay Auto Unlatched Manual Latched Auto If relay function is set to Trip the menu content similar to Relay 1 is shown please refer to Output Relay 1 If relay function is set to Start the following menu is displayed 2
6. 323A Heading of MEASUREMENTS menu Press Enter to enter submenu content Phase 1 current value Taking into account of Line CT Pri ratio Phase 2 current value Taking into account of Line CT Pri ratio Phase 3 current value Taking into account of Line CT Pri ratio Earth current value Taking into account of E Gnd CT Pri ratio Thermal state Calculated on true RMS current values Press Clear to clear the values Current frequency calculated from phase 1 currents Peak Phase 1 current value Peak Phase 2 current value Peak Phase 3 current value Peak Earth current value Average Phase 1 current value IL2 Avg 80 4A IL3 Avg 78 2A lo Avg 6 24A Max amp Avg I RST RST CLEAR Time Window 10min RECORDS Menu 2 RECORDS Fault Records Menu 2 1 Fault Rcrds trip 1 Date 03 01 2011 Time 10 19 52am Active Set Group FC Uy Average Phase 2 current value Average Phase 3 current value Average Earth current value To clear the maximum and average values of the currents Press Clear to clear these values Set the value for the time window rolling during which maximum and average values are stored Press Enter to change the value Heading of RECORDS menu Press Enter to enter submenu content Heading of Fault Record submenu Press Enter to enter submenu content Example of Fault Record title page showing trip element source value and record number 1 P
7. UIIEIV L E ID NOLLO4A LOYd 9 pugs 5 218 suonounj JUBAD O JI UMOYS JOU 316 SWO DY JO DOS y lt lt lt ll lt lt lt ajdurtS lt lt lt lt lt lt l lt lt 0 lt lt O lt lt lt lt 0l lt lt I UI8JV 0 lt i duro J SAMI LNAI lt 91 SAMI LAI lt I 6L addy eq lt 0 Sd I Avjaq lt 9 lt 0 lt TO lt OI lt l TO 90 h JO astud Tp MOPUTM 15 LSU I BAY Y XEN 3AV O BAY CTI BAY CITI BAY ITI XE N oJ xe ETI xe TTI xe TTI ouanba1q1 0 PUL oJ ETI TI 11 XX XX 9UIL XXXX XX XX 3150 posed 00 z Lndu 93ed TO TT MATO lt lt 0 MATO lt o 412 lt lt lt l 12 dnoin 9AI9V lt lt I NdTO PUO IWILL ouenbai T12 MODS MEMU Jo NdTO ssowysug GOT dnoin 8u1m9s 180 1 98 Ud LO PUD A uond12seq I9 1 NdTO UML UO COT q dnoI 82 aa Ud LO WT piomssed Nd PEO PIO 9 6 51 S papag dn012 pg Y HA oey LO TE do T E 0000 v yndino 7 9384 Sp123J JUAT 2 2 SPIS ANLA TZ 00 0 01 00 0 ll 00 0 Z181 0070 11
8. 0 12 0 31 520 0208 hour minute hour minute 0 23 0 59 521 0209 Milliseconds ms 0 59999 Note For MK2200L Device type main is 00 02 01 Device type sub is 00 40 Address Parameter Format Units and Scale Range Dec Hex 522 020A Date amp time format for relay display only F12 0 1 0 1 523 020B Change Group by F13 0 1 524 020C Setting Group F6 0 Group 1 1 Group 2 525 020D LCD backlight on duration F7 minute 1 60 526 020E LCD backlight brightness F6 0 low 1 medium 2 high 527 020F Clear key to scroll settings F6 0 Disable 1 Enable 528 0210 Communication Unused F6 0 Disable 1 Enable 529 0211 Communication Baud Rate F6 026400 1174890 2 9600 9182004238400 5 57600 530 0212 Communication Parity F6 0 None 1 Odd 2 Even 531 0213 Communication Stop Bit F6 0 1bit 1 2bits 532 0214 Communication Address F7 255 533 0215 Password F7 534 543 0216 021F Reserwd read as 0 write to void 544 0220 Demand Alarm F6 0 Disable 1 Enable 545 0221 ldemand gt threshold F14 0 01 In 0 2000 0 1 20 546 0222 tldemand gt delay time F14 0 01s 0 10000 0 100s 547 559 0223 022F Reserved read as 0 write to void 560 0230 Cold Load Pick up Level F7 00 500 561 0231 Cold Load Pick up tCL F14 0 01s 0 60000 0 1 600s 562 0232 Cold Load
9. 2 DT 2 30ms lo gt lo gt gt IDMT 5 30ms gt 1 2 x Is Thermal overload 10 0 1 to 3 x In 5 36 INSULATION High voltage dielectric withstand test IEC60255 5 2kV rms 1 minute High voltage impulse test IEC60255 5 5kV 1 2 50us STANDARDS Complies with IEC 60255 26 standard Electrical fast transient IEC61000 4 4 power supply 4kV 5kHz Electrical fast transient IEC61000 4 4 other inputs 2kV 5kHz Surge IEC61000 4 5 IEC 60255 22 5 4kV common mode 2kV differential mode Electrostatic discharge IEC61000 4 2 air discharge 8 kV Electrostatic discharge IEC61000 4 2 contact discharge 6 kV 1MHz burst disturbance IEC60255 22 1 Conducted Immunity IEC61000 4 6 Radiated Immunity IEC61000 4 3 Conducted emissions Radiated EM Field emission 2kV Common mode Differential mode 10V rms 1kHz 80 AM 0 15 to 80MHz 10V m 80Mhz to 1GHz 1kHz 80 am EN 55011 Group 1 Class B CISPR 11 Group 1 Class B ENVIRONMENTAL CONDITIONS Temperature Humidity Enclosure protection 5 C to 55 C 56 days at 93 RH and 40 C non condensing IP54 when panel mounted 37 9 0 MODBUS Protocol Both of the RS232 port on the front panel and the RS485 port on the rear terminals use MODBUS RTU protocol The RS232 front panel port is fixed to 38400bps even parity 1 stop bit relay address 1 The RS485 rear port communication setting is set b
10. 4561x910 ag ed MEN e hasa skal noA 38 9 2 MODBUS Register anida ad 40 9 3 MODBUS Mapping POMAR a 45 1 0 Introduction The purpose of this manual is to provide information necessary to install operate and maintain the MK2200L relay MK2200L provides protections for 3 independent phase overcurrent elements and one non directional earth fault element All these elements are connected to the current transformers of the feeders to be protected There are 2 sets of current inputs for 1A and 5A rated CTs Using the front panel the user can easily navigate through the user friendly menu read measurements and change settings The relay status and alarm or trip records are displayed on the back lit LCD also There is a RS232 port available on the front panel and a RS485 port on the rear terminals Using MODBUS RTU protocol all stored information can be read and settings can be modified with a PC loaded with Mikro setting software MK2200L has 4 configurable output relays They can be activated by any of the protection functions available in the relay There is also 1 output relay for internal fault indication There are 2 configurable logic inputs for various functions 1 1 Symbols and Definitions In this manual and on the relay unless the context otherwise requires the following symbols and abbreviations shall apply throughout AC Alternating current OL Overloaded Ack Acknowledge PU Pickup Alrm Ala
11. 99x10 999kA or jo jm j COIN F8 Value low word thermal 500 2000 E mm tr Por amperes i 01 10 IL1I 0 0 pere 0 9 99x10 999kA F8 11 IL2 high word 7 F 01 A E IL3 high word 13 Am 4 A F 01 E 4 iL3lowword 4 IL3 low word ly pe poe b l A Bi men asus 5 lo low word Word number 6 High byte Fault record source code Bit 0 IL1 Bit 1 IL2 Bit 2 IL3 8 lo 9 Thermal 10 Aux 1 11 Aux 2 12 TCS Low byte Fault record threshold tl gt tl gt gt tl gt gt gt tlo gt tlo gt gt Thermal Overload tAux 1 tAux 2 TCS Reserved 0 Remote trip 0 1 2 3 4 5 6 7 8 9 1 Address Parameter Units and Range Dec Hex Scale Event Records Read only Function 0x03 or 0x04 2000 Record1 2001 Reod2 TT j o 2089 Reed2o Alarm Records Read only Function 0x03 or 0x04 3000 Record 1 3000 Reod SE PO O MA ee 305 Record30 Record code Seebelow recordcode Record value___ See below Jrecordvalue Word number 6 Event and Alarm Record value Word number 5 Event and Alarm Record code 0 None If code is start tl gt trip start tl gt gt trip gt gt gt start tl gt gt gt trip Demand alarm 1 I gt start Bit 0 IL1 2 tl gt trip Bit 0 IL2 3 start Bit 0 IL3 4 tl gt gt trip 5 l gt gt gt start If code is Sett
12. or Esc to cancel Heading of Fault Record submenu Press Enter to enter submenu content Example of Event title page Press Enter to enter sub page for this record Event record sub page showing record date and time Press Esc Enter to return to Fault Record title page Clearing all record menu is shown when Up is pressed during display of Record 1 s title page or Down is pressed during display of Last records title page Press Clear to clear all record or Esc to cancel CONFIGURATION Menu 3 CONFIGURATION Heading of CONFIGURATION menu Press Enter to enter submenu content Op parameter Menu 3 1 Op Parameter Password HERA Description MK2200L Firmware o Frequency 50Hz CT Ratio Menu 3 2 CT Ratio Line CT Pri 500A E Gnd CT Pri 200A Heading of Op Parameter submenu Press Enter to enter submenu content This password is required when changing relay settings Press Enter to enter a new password The user needs to enter existing password to unlock after that the display shows current password Press Enter again to enter the new password Model name of this relay Version of the firmware Set the nominal value of the line frequency Press Enter to change this value Heading of CT Ratio menu Press Enter to enter submenu content Set the rated primary current of the Line Phase CT Set the rated primary current of the Earth Ground CT Note The CT secondary should be connected to 5
13. present as long as the password is active 2 minutes if there is no key action Password Entry The input of the password is requested as soon as a modification of a parameter is made The user enters each one of the 4 digits by using up or down key and validates each digit with Enter If Esc is pressed in between the password entering is terminated Password OK is shown if correct password is entered Password ERROR is shown if wrong password is entered The display returns to the point of the preceding menu Pressed Enter again to modify the setting If no key is pressed after 2 minutes the settings are locked A new password request is associated with any subsequent setting change Changing Password To change the password go to Op Parameter gt Password menu Enter current password to unlock after that the display shows current password Press Enter again to enter the new password 4 0 Menus The menu is divided into 7 main menus and their corresponding submenus To enter Main menu press Enter during default display The menu can be navigated by pressing Up Down Enter and Esc keys There is no need of a password when reading settings and measured values 4 1 Menu Contents The Main menu consists of 8 items MEASUREMENTS RECORDS CONFIGURATION PROTECTION G1 PROTECTION G2 INPUT OUTPUT COMMUNICATION ON A uno lt puupI ue y pueuIo
14. the appropriate TCS delay time The continuity of trip circuit is monitor when Trip contact R1 is not energized When the input detects no signal for a time longer than the TCS delay time TCS alarm pops up to warn the failure of trip circuit Three examples of application are given below Example 1 Trip Coil Monitoring In this example only 52a auxiliary contact is available the trip coil is monitored when the CB is open or closed Vdc Trip contact R1 MK2200 Trip coil Vdc Example 2 Trip Coil and Auxiliary Contacts Monitoring In this example both 52a and 52b auxiliary contacts are available The complete trip circuit is monitored when the CB is closed and a part of the trip circuit when the CB is open excluding Trip coil It is necessary to insert resistor R 1 in series with 52b if the Trip contact R1 is latched or it stays involuntarily closed Vdc Trip contact R1 MK2200 Trip coil K Resistor R1 Vdc 27 Examples 3 Trip Coil and Auxiliary Contacts Monitoring when CB is open or closed In this example both 52a and 52b auxiliary contacts are available the complete trip circuit is monitored when the CB is open or closed In this case it is necessary to insert resistor R1 if the Trip contact R1 is latched or it stays involuntarily closed Vdc Trip contact R1 52a 52b L AAA C C C Resistor R1 x Trip coil Vdc MK2200 R
15. the time delay type of 1 Setting choices are IDMT inverse I gt Delay Type definite time curve and Definite Time IDMT If Definite Time is selected the following menu is displayed 1 on tl gt 1 00s Set the value for the time delay of I gt definite time If IDMT is selected the following menu is displayed IDMT Curve Normal Invrse ktl gt 0 20 I gt gt menu gt gt Yes gt gt 9 00In tl gt gt 100ms I gt gt gt menu gt gt gt Yes gt gt gt Sample Yes gt gt gt 20 0In tl gt gt gt 30ms Earth Fault Menu 4 2 Earth Fault Set the type of curve Set the time multiplier setting value for the curve Set to Yes to enable second phase overcurrent threshold gt gt Then the following menu is displayed Set the value for the current threshold I gt gt Set the value for the time delay of I gt gt definite time Set to Yes to enable third phase overcurrent threshold I gt gt gt Then the following menu is displayed Set to yes to enable gt gt gt operated on current sample base Otherwise it operates on fundamental value Sample base method will ensure fast tripping on highly saturated current signal Set the value for the current threshold I gt gt gt Set the value for the time delay of I gt gt gt definite time Heading of Earth Fault menu Press Enter to enter submenu content 17 lo gt menu Set to Yes to enable first earth fault th
16. to default display from any submenu Enter i To enter submenus or to confirm setting value change Clear To reset tripping reset latched relay If CLEAR Scroll is enabled under Configurations gt Display menu and during no alarm status 1t can be used to scroll through Phase Overcurrent and Earth Fault settings and to return to default display from any submenu if pressed and hold for 1 5 seconds Record To display Alarm records To display successive records press Record key again To display record date and time press Enter To exit press Esc Enter To delete individual record press Clear To delete all records go to the end of the records and Clear all alarm will be shown press Clear to clear 2 3 LEDs Aux LED Indicates auxiliary power to the device Trip LED Indicates tripping Alarm LED Blinks to indicate non acknowledge alarm or tripping Steady on when the alarm is acknowledged by pressing any key 2 4 RS232 Port The front panel RS232 port has the same MODBUS RTU protocol as the RS485 port on the rear terminal though with fixed communication settings 38400bps 1 stop bit even parity address 1 All stored information can be read and settings can be modified with a PC loaded with the supplied Mikro setting software 2 5 Default Display By default the LCD displays the current value measured for IL1 IL2 IL3 and lo Input and output status as well as date and time can be shown by press
17. 0 1 0 1 0 05 li 10 20 MI gt Long time Inverse t s 200 100 i ASE 10 k 1 0 08 0 6 0 5 0 4 0 3 4 0 2 0 1 0 05 10 20 MI gt 29 Extremely Inverse Us y 100 NN WW WN NY 10 A LY N i k 1 0 0 8 0 1 08 0 4 03 9 05 aK 92 0 01 1 10 20 MI gt Thermal Overload Curves k 1 1 Te 10minutes time second 10 000 1 000 100 30 6 0 Case Dimensions 129 1 mm Panel H cut out 198 mm 142 mm 34 mm 1 mm 139 136 mm 165 mm 7 0 Connection Diagram and Terminal 7 1 Terminal Connection at Rear View BE El Connection terminal Function Description 1 SA 1A common CT input for I 2 5A CT input for I 3 1A CT input for IL 4 5A 1A common CT input for 5 SA CT input for I2 6 1A
18. 18 IL2 high word 01 A 7 25 0018 iL low word 0 01 Ampere 0 9 99x10 999kA 26 001A IL3 high word 01 A ES 0018 is lew word 0 01 Ampere 0 9 99x10 999kA 28 001C lo high word 01 A 29 001D lo low word at 999KA 30 001E IL1 Max high word 01 A 7 31 001E LA Max low word 0 01 Ampere 0 9 99x10 999kA 32 0020 2 Max high word 01 A 33 0021 IL2 Max low word 0 01 Ampere 0 9 99x10 999kA 34 0022 IL3 Max high word 35 0023 IL3 Max low word 0 01 Ampere 0 9 99x10 999kA 36 0024 lo Max high word 01A 7 37 0025 IO Max low WOrd 0 01 Ampere 0 9 99x10 999kA 38 0026 IL1 Avg high word 01 A 39 0027 ILT Avg low word 0 01 Ampere 0 9 99x10 999kA 40 0028 IL2 Avg high word 7 41 0029 ILZ Avg low word 0 01 Ampere 0 9 99x10 999kA 42 002A IL3 Avg high word 01 A 7 43 0028 IL3 Avg low word 0 01 Ampere 0 9 99x10 999kA 44 002C lo Avg high word F 01 A 7 25 002D Io Avg Tow word 8 0 01 Ampere 0 9 99x10 999kA 46 002E Line Frequency F7 0 01 Hz 0 10000 0 100Hz Remote command Write only Function 06h 256 0100 Remote Command F9 Bit field Settings Read Write Function 03h 04h 06h 10h 512 0200 Line CT Primary F7 Ampere 1 3000 513 0201 Reserved 514 0202 Earth Ground CT Primary Ampere 1 3000 515 0203 Reserved 516 0204 Frequency 0 50Hz 1 60 Hz 517 0205 Time Window for Average and Maximum Current minute 1 60 518 0206 Year year 0 199 as 2000 2199 519 0207 month day month day
19. A or 1A CT input terminal of the relay according to Primary CT type The display current 1s calculated by the formula Current at CT input terminal CT input terminal type x CT Pri setting above For example if Current at CT input terminal 3A CT input terminal type 5A CT Pri 200A The display value 3 5 x 200 120A 13 Date amp Time Menu 3 3 Date amp Time Date 16 09 2012 Date Format DD MM YYYY Time 10 46 23am Time Format 12 hour Group Select Menu 3 4 Group Select Chg Group by Menu Setting Group Display Menu 3 5 Display LCD On Time 10min LCD Brightness Medium Heading of Date amp Time menu Press Enter to enter submenu content Displays the date Press Enter to change the date Set the date format for display Press Enter to change between DD MM YYYY and MM DD YYYY Displays the time Press Enter to change the time starts from hour minute and am pm if 12 hour format is selected Second will be reset to 0 when enter is pressed for any of the digit Set the time format Press enter to change between 12 and 24 hour Heading of Group Select menu Press Enter to enter submenu content Set whether the protection group setting is change by Menu or Input One of the input function must be set to Select Group if Input is selected Press Enter to change If above is set to Menu this will set the active protection group Press Enter to change Heading of D
20. CT input for 7 SA 1A common CT input for 15 8 5A CT input for 13 9 1A CT input for Irs 10 SA 1A common CT input for lo II SA CT input for Io 12 1A CT input for Io 13 17 Not used 18 Termination resistor for RS485 shorting to 20 for termination 19 RS485 positive terminal 20 RS485 negative terminal 21 RS485 cable shield 22 Not used 23 24 Output contact R3 25 26 Output contact R4 27 28 Digital Input 1 no polarity 29 30 Digital Input 2 no polarity 31 Casing earth terminal 32 Auxiliary supply input no polarity 33 Auxiliary supply input no polarity 34 Common contact for IRF 35 Normally open contact for IRF 36 Normally closed contact for IRF 37 Common contact for tripping contact R1 38 Normally open contact for tripping contact R 1 39 Normally closed contact for tripping contact R1 40 Common contact for output contact R2 41 Normally open contact for output contact R2 42 Normally closed contact for output contact R2 32 7 2 Typical Connection Diagram Example 1 With neutral CT secondary 5A L1 Uaux OQ R2 R3 MK22001 10 com EA R4 Internal Relay Failure 27 e es k2 Digital Input 1 Za Termination Resistor d P RS485 Q Digital Input 2 ME A Communication cable shield Series resistor 18k Ohm 2W 2 Shorting terminal 18 and 20 required for gt 170 Vac 240 Vdc for the last relay to 270Vac 380Vdc Example 2 Without neutral CT secondary 1A Li L2 E Uaux
21. Mikro Combined Overcurrent and Earth Fault Relay User s Manual vi Features Three phase three stages phase overcurrent setting Low set and high set earth fault setting amp IDMT and definite time setting amp Thermal overload protection amp Trip circuit supervision RS232 and RS485 MODBUS RTU communication Fault alarm and tripping records with timestamp x Multifunction programmable outputs Multifunction external digital inputs Revision History V1 0 May 2012 First version V1 1 Aug 2013 Adding IRF option Correcting MODBUS register Correct typo error at Fault Records Menu MODBUS register V1 2 Jan 2014 Correct typo error at Input Menu Typical Connection Diagram Table of Contents L O TGtrod cgfi js uy A tua l i A uu se 4 1 1 Symbols and Definitions sissies T bay 01 eee 4 2 0 Front RE 86 5 ZA LCD Dis PLAN Aids ide 5 2 2 EV PA isc pren ara E R E EE E R 5 Die BASED iii aia 6 22425232 00144111 it aid 6 2 5 Default Disp ie 6 2 OA lari COn dit 6 3 0 PAG SIV ORG osc uu 22 a l i A A ua i am S R ua SS n S a 7 Password Protection linia 7 DASS WOOD A O Er FIS as 7 Changing Password sa e e ISA oat 7 A TO 7 An Ment Contents ci e td e ado ne e ra a e nh hanh anh 7 MEASUREMENTS Menua cccccccccscscsscscsssssccecsssscscsccecssosccscscccccscceccssscccccsescccccccscscceccsccccccsscsecess 10 RECORDS Menus iii 11 CONFIGURATION M
22. N gt gt gt gt gt gt lo gt lo gt gt Yes Yes Yes Yes Yes Thml OL Alarm Yes tAux 1 Alarm Yes tAux 2 Alarm TCS Alarm Yes Yes Demand Alarm Yes Assign I gt start to the output relay Assign I gt gt start to the output relay Assign I gt gt gt start to the output relay Assign lo gt start to the output relay Assign lo gt gt start to the output relay Assign Thermal Overload Alarm to the output relay Assign Aux 1 input alarm to the output relay Assign Aux 2 input alarm to the output relay Assign TCS alarm to the output relay Assign Demand alarm to the output relay If relay function is set to CBFP Circuit Breaker Failure Protection the following menu is displayed Delay Include Aux 200ms No Set the value for the time delay of CBFP This output relay 1s activated 1f after the activation of the trip relay the fault has not been cleared for longer than this delay Set if Aux 1 or 2 input is included as fault condition Prolonged activation or latched Aux input could cause the undesirable activation of CBFP relay 23 Maintenance Mode Menu Heading of Maintenance Mode menu Press Enter to enter submenu 7 5 Maint mode content Prot disabled Press Enter once output 1 blinks press Up Down to toggle the output status Press Enter again to test output 2 and subsequently for output 3 and 4 Press Esc to
23. Pick up element F15 Bit field Bit 0 5 563 575 0233 023F Reserwd read as 0 write to void 0 None 1 aux1 2 aux2 3 Reset 4 Blocking 576 0240 Input 1 Function F6 5 Trip 6 Grp select 7 CLPU 8 Sync clock Bit 7 0 Active high 1 Active low 577 0241 Input 1 Reset Option F16 Bit field Bit 0 1 578 0242 Input 1 Blocked element F17 Bit field Bit 0 5 579 0243 Input 1 Aux delay F14 0 01s 0 60 000 600s 580 0244 Input 1 TCS delay F14 0 01s 0 1000 10s 0 None 1 aux1 2 aux2 3 Reset 4 Blocking 581 0245 Input 2 Function F6 5 Trip 6 Grp select 7 CLPU 8 Sync clock Bit 7 0 Active high 1 Active low 582 0246 Input 2 Reset Option F16 Bit field Bit 0 1 583 0247 Input 2 Blocked element F17 Bit field Bit 0 5 584 0248 Input 2 Aux delay F14 0 01s 0 60 000 600s 585 0249 Input 2 TCS delay F14 0 01s 0 1000 10s 586 622 024A 026F Reserwd read as 0 write to void 623 026F IRF Option F6 0 Disable 1 Enable 624 0270 Relay 1 Function read only F6 0 none 1 start alarm 2 trip 3 upstream trip 625 0271 Relay 1 Reset option F6 0 manual latched 1 auto reset unlatched 626 0272 Relay 1 Linked element F18 Bit field Bit 0 10 627 628 0273 0274 Reserwd read as 0 write to void 629 0275 Relay 2 Function F6 0 none 1 start alarm 2 trip 3 upstream trip 630 0276 Relay 2 Reset option F6 0 manual latched 1 auto reset unlatched 631 0277 Relay 2 Linked element F18 Bit field Bit 0 10 632 0278 Relay 2 CBFP o
24. anel unread alarm record Unsigned integer Relay LED status Bit 0 and Bit 1 Trip LED 1 on 2 blink Bit 2 and Bit 3 Alarm LED 1 on 2 blink Unsigned integer Input status Bit 0 Input 1 0 off 1 on Bit 1 Input 2 0 off 1 on Unsigned integer Output relay status Bit 0 Output 1 0 off 1 on Bit 1 Output 2 0 off 1 on Bit 2 Output 3 0 off 1 on Bit 3 Output 4 0 off 1 on Unsigned integer Miscellaneous A numeric value representation of certain options or functions Refer to range column of the register for detail Unsigned integer A numeric value of certain units Eg 12 may represent 12 or 12minutes Refer to individual resisger s Units and Scale and range for detail Reset alarm trip also acknowledge and delete alarm record Acknowledge alarm trip Reset display to main page Reset thermal state Reset maximum and average measurement value Remote trip Reset panel password Delete fault record Delete event record 0 Delete alarm record For high byte 3 set to main display page 0 3 For hight byte 8 9 and 10 0 Delete all record n delete record n 45 46 Unsigned integer High byte month Low byte day Unsigned integer High byte hour 24 hour format Low byte minute Unsigned integer Date and time format for relay display only High byte Date format 0 DD MM YYYY 1 MM DD YYYY Low byte Time format 0 12 hour 1 24 hour Unsigned integer
25. ated Over temperature conditions occur when currents in excess of rating flow for a certain period of time It can be shown that temperatures during heating follow exponential time constants and a similar exponential decrease of temperature occurs during cooling In order to apply this protection element the thermal time constant To of the plant equipment to be protected is therefore required The calculation of the Time to trip is given by K 0 T p To ln K Ori Ttip Time to trip in seconds To Thermal time constant of the protected element in seconds K leq k Ie gt lq Equivalent current corresponding to the RMS value of the largest phase current lo gt Full load current rating given by the national standard or by the supplier k Factor associated to the thermal state formula 0 Initial thermal state If the initial thermal state 30 then 0 0 3 Trip thermal state If the trip thermal state is set at 100 then 0 trip 1 The settings of these parameters are available in the menus PROTECTION G1 G2 Thermal OL The calculation of the thermal state is given by the following formula t t O K e Te Ox eTo 0 being calculated every 20ms 26 5 3 Trip Circuit Supervision Trip Circuit Supervision TCS enables the trip circuit to be monitor To enable TCS function set one of the Digital Input function to TCS at the INPUT Menu Input Type as Active High and set
26. d _ 800 pa o Jj 7 6 0z sabet Enabe 801 50 4000 0 5 40 802 0 10000 0 1005 803 809 0323 0329 Reserved read as 0 writetovod 810 paxa ES 0z0sabe t Enabe 811 03258 gt gt gt Sami xolzvs 812 50 4000 0 5 40 813 0320 H gt gt gt Definieime rt4 05 10000 0 100s 814 815 032E 032F Reserved readas0 writetovoid 816 0330 EanhFautLowSeto re 0zDisabl 1 Enable 817 2 200 0 02 2 818 0332 Earth Fault Low Set lo gt Delay Type Fe O definite time 1 IDMT 819 0333 Earth Fault Low Set Definite Time tlo gt 4 o 10000 0 100s 820 0334 Fault Low Set IDMT Curve e O NI 1 VI 2 El 3 LTI 4 NI1 821 0335 Earth Fault Low Set IDMT Multiplier kto gt F1l4 0 1 100 0 01 1 822 831 0336 0339 Reserved read as O writetovod 832 0340 Earth Fault High Set lo gt gt s 0 Disable 1 Enable 833 10 1000 0 1 10 834 0 10000 0 100s Protection Group 2 42 Address Parameter Units and Range Dec Hex Scale Fault Records Read only Function 03h or 04h 4096 H000 JFautReerdgi 4097 H001 Faut Recora2 EAS AAA S T AAA A 4145 103 FaultRecordso L Each Fault Record consists of 16 words hour minute F11 hour minute 0 23 0 59 5 Isettinggrowp __ __________ Jo 1 asgroupt 2 Value high word 0 01 Ampere or 0 1 0 9
27. ecommended Resistor R1 Value The recommended maximum resistor R1 value for various auxiliary voltage is shown Auxiliary Voltage Ua 24Vdc 36Vdc 48Vdc 60Vdc 72Vdc II0Vdc 132Vde Maximum RI value Ohm 4 7k 9 1k 13k 16k 22k 43k 62k Power rating W 1 4 1 4 1 2 1 2 1 2 1 1 Auxiliary Voltage Ua 220Vdc 264Vdc Maximum RI value Ohm 82k 91k Power rating W 2 2 For the case of example 3 the maximum RI value should be deducted by Trip coil resistance insignificant in most cases The Power rating of the resistor R is calculated as 2 P gt 2x Watt RI RI 28 5 4 Characteristic Curves Normal Inverse t s 0 1 0 05 10 20 MI gt Very Inverse t s Normal Inverse 1 3 10 t s 10 0 1 10 20 MI gt AV EN 1 N 1 1 1 E 1 0 F 0 8 0 6 0 5 0 4 0 3 0 2
28. en ocioso na d x c 12 PROTECTION 60180 ssi 77 7 7a 16 PROTECTIONG2 NIEHUE 122027221172 ias dida dan rada k9 c6 008v ng 19 INPUT Men ca a dc 19 LJEEPU TSsMen zar at E AS AAA huu A A DAIS Goce 21 COMMUNICATION MHU c 2222021 2222112112 841 4 ni 24 5 0 Functions and Descriptions 25 5 1 Circuit Breaker Failure Protection SE TT 25 5 2 Thermal Overload PrOt CfIOI sul U u h u us TK nh 26 5 3 Trip CHICHE SUPE IO I Su AS it 27 5 4 Characteristic CULVES tye 020 6 ee A a EGE 444v vas VETA E s SA Se 29 6 0 Case Dimensions 31 7 0 Connection Diagram and Terminal 31 7 1 Terminal Connection at Rear VIeW annassa 31 7 2 Typical Connection Dia granny isis rarere E NE AE SiE 33 8 0 Technical Data l l G2 c i i 1 u S Saa S ss 34 9 0 MODBUS Protocol 38 9 1 MOIOBUSSEUTPCHOTS Lo ut U eg 030403 005x643
29. exit Output 1 2 3 4 Test 0000 Relay IRF 7 6 Relay IRF Heading of Relay IRF menu When enabled relay IRF is on when relay operates normally If IRF output is not needed it can be disabled to save some power Relay IRF Set to Yes to enable No to disable Relay IRF output COMMUNICATION Menu Communication setting is applicable to the RS485 port on the rear terminals of the relay the front panel RS232 port has fixed communication settings 38400bps 1 stop bit even parity address 1 8 COMMUNICATION Heading of COMMUNICATION menu Press Enter to enter submenu content Communication Set to yes to enable MODBUS RTU communication Yes Baud Rate Set the baud rate in bit per second bps 38400bps Parity Set the parity in the data frame Even Stop Bit Set the number of stop bit in the data frame Relay Address Set the address of the relay in the MODBUS network 2 5 0 Functions and Descriptions 5 1 Circuit Breaker Failure Protection Circuit breaker failure protection CBFP is used to generate a tripping signal via selected output relay after a preset time delay if the fault has not been cleared after the activation of tripping signal through trip contact relay R1 Thermal overload is excluded from fault condition for CBFP CBFP output is usually used to trip the upstream circuit breaker or to trip a redundant tripping circuit of the same circuit breaker CBFP function can be assigned to relay R2 to R4 There i
30. hanical life 5x 10 operations RECORDS Fault Record Up to 50 records Event Record Up to 250 records Alarm Record Up to 30 records 34 SETTING RANGES General Line CT primary Earth CT primary Frequency Phase Overcurrent I gt I gt I gt Delay type t gt I gt IDMT curve P gt I gt gt gt I gt gt gt I gt gt gt Sample t gt gt gt Earth Fault lo lo gt lo gt Delay type tlo gt lo gt IDMT curve ktlo lo gt gt lo gt gt tlo gt gt Thermal Overload Thermal OL 10 To k 0 Trip 0 Alarm Demand Alarm Demand Alarm Idmnd gt tldmnd gt 1 to 10000 A 1 to 1000 step 1 1000 to 10000 step 5 1 to 10000 A 1 to 1000 step 1 1000 to 10000 step 5 50 or 60 Hz Yes or No 0 1 to 25 x In Variable steps NOTE When delay type is IDMT the maximum setting recommended should be 2 00 x In IDMT or Definite Time Oto 100 s Variable steps Normal Inverse Very Inverse Extremely Inverse Long time Inverse Normal Inverse 1 3 10 0 01 to 1 00 Yes or No 0 5 to 40 x In Variable steps Oto 1005 Variable steps Yes or No 0 5 to 40 x In Variable steps Yes or No Oto 100s Variable steps Yes or No 0 02 to 2 x Ion Variable steps NOTE When delay type is IDMT the maximum setting recommended should be 0 5 x Ion IDMT or Definite Time Oto 100s Variable steps Normal I
31. he cold load pick up function Assign the I gt gt time delay threshold with the cold load pick up function Assign the I gt gt gt time delay threshold with the cold load pick up function Assign the lo gt time delay threshold with the cold load pick up function Assign the lo gt gt time delay threshold with the cold load pick up function Assign the Thermal Overload time delay threshold 10 gt with the cold load pick up function 15 Demand Alarm Menu Demand alarm is used to give alarm signal when load current is higher than the threshold The threshold is set lower than overcurrent for proper functioning 3 7 Demand Alarm Heading of Demand Alarm menu Press Enter to enter submenu content Set to Yes to enable demand alarm Then the following menu is displayed Demand Alarm Yes Idmnd gt Set the value for the current threshold Idmnd gt 1 50In tldmnd gt Set the value for the time delay of Idmnd gt 9 00s PROTECTION G1 Menu Heading of PROTECTION Gl Group 1 menu Press Enter to enter submenu content 4 PROTECTION G1 Phase OC Menu 4 1 Phase OC Heading of Phase OC Overcurrent menu Press Enter to enter submenu content I gt menu I gt Set to Yes to enable first phase overcurrent threshold I gt Then the Yes following menu is displayed Is Set the value for the current threshold I gt 2 00In NOTE When delay type is IDMT the maximum setting recommended should be 2 00In Set
32. ing Up or Down to change the default display page Pressing Esc always return to current value display As soon as an alarm or trip is detected the display jumps to record display to show the latest record 2 6 Alarm Condition During an alarm or tripping condition Alarm LED blinks Alarm record pops up Any keypress change the Alarm LED to steady on Example of Alarm record title page showing record 1 out of total 2 records Press Enter to enter sub page for this record Press Record Down to show next alarm Press Up to show previous alarm Press Esc to return to Default Display Press Clear to clear the alarm If the condition still persists the alarm cannot be cleared i Alarm record sub page showing record date and time Press Date 03 02 2011 Esc Enter RECORD to return to Alarm Record title page Time 08 23 44am Clearing all record menu is shown when Up is pressed during display of Record 1 s title page or RECORD Down is pressed during display of Last records title page Press Clear to clear all Alarm record or Esc to cancel tl gt trip 1 2 Clear all alarm Clear CLEAR 3 0 Password Password Protection Relay settings can be view anytime but locked from being changed A password 1s required for changing setting The password consists of four digit numbers The factory default password is set as 0000 The programming mode is indicated with the letter P on the right hand side of the display The letter P remains
33. ing chage 6 tl gt gt gt trip Value is the register address of setting being changed 7 lo gt start 8 tlo gt gt trip If code is thermal alarm thermal overload 9 lo gt gt start Value is the of thermal alarm or overload threshold 10 tlo gt gt trip 11 Remote trip If code is Group change 12 Remote acknowledge 0 group 1 13 Remote reset 1 group 2 14 Setting change 15 16 Remote thermal state reset Maintenance mode 17 Thermal alarm If code is output relay latching output relay unlatching Bit 0 Output relay 1 Bit 1 Output relay 2 18 Thermal overload Bit 2 Output relay 3 19 TCS alarm Bit 3 Output relay 4 20 Group change 21 tAux 1 If code is input activate input deactivate 22 tAux 2 Bit 0 Input 1 23 tl gt reset Bit 1 Input 2 24 tl gt gt reset 25 tl gt gt gt reset 26 tlo gt reset 27 tlo gt gt reset 28 Relay latching 29 Relay unlatching 30 Input activate 31 Input deactivate 32 Idemand alarm 33 General starting 34 Cold load function starting 44 9 3 MODBUS Mapping Format DESCRIPTION 2 bytes ASCII character Unsigned integer Relay status Bit 0 Eeprom data failure Bit 1 Calibration failure Bit 2 Clock loss Bit 3 Clock error Bit 4 Adc error Bit 11 Back port RS485 unread fault record Bit 12 Front panel RS232 unread fault record Bit 13 Front panel Back port communication Bit 14 Back port unread alarm record Bit 15 Front p
34. isplay menu Press Enter to enter submenu content Set how long the LCD backlight remains on after no key is pressed Press Enter to change Set the brightness of the LCD backlight Press Enter to chage CLEAR Scroll N Cold Load Pickup Menu Set if Clear key can be used during no alarm or trip state to scroll through the default display pages Phase OC and Earth OC settings for currently selected group as well as to return to Default Display from Record display This is useful when Up Down Enter and Esc key 1s Inaccessible due to the front panel is covered and locked Cold Load Pickup allows selected settings to be altered to respond to temporary overload conditions that may occur during cold starts These conditions could be switching on large heating load after a extended cooling period air conditioning or inductive loads that draw high starting current like motor To enable cold load pickup one of the input functions has to be set to Cold Load PU 3 6 Cold Load PU CLPU Level 200 CLPU tCL 5 00s CLPU tl gt Yes CLPU tl gt gt Yes CLPU tl gt gt gt Yes CLPU tlo gt Yes CLPU tlo gt gt Yes CLPU Thml OL Yes Heading of Cold Load Pickup menu Press Enter to enter submenu content Scaling value in percent for the cold load pick up assigned to the selected thresholds Delay timer setting tCL for the Cold Load Pickup function Assign the 1 time delay threshold with t
35. nverse Very Inverse Extremely Inverse Long time Inverse Normal Inverse 1 3 10 0 01 to 1 00 Yes or No 0 1 to 10 x Ion Variable steps Oto 100s Variable steps Yes or No 0 1 to 3 00 x In Variable steps 1 to 200 minutes Step 1 1 to 1 5 Step 0 01 50 to 200 Step 1 50 to 200 Step 1 Yes or No 0 10 to 20 x In Variable steps 0 03 to 100 s Variable steps 35 Cold Load Pickup CLPU Level CLPU tCL Input Aux timer TCS delay Output CBFP Delay Communication Communication Baud Rate Parity Stop Bit Relay Address 100 to 500 0 1 to 600 s Oto 600s 0 1 to 10 s Variable steps 0 05 to 10 0 s Variable steps Yes or No 2400 4800 9600 19200 or 38400bps None Even or Odd lor 2 1 to 255 Variable steps 0 1 1 00 step 0 01 1 00 20 step 0 1 gt 20 step 1 MEASUREMENT RANGE Phase and Earth current Display Oto 999 kA Taking into account of CT Pri ratio Phase Current Secondary 5A input Oto 200A 1A input 0to40A Earth Current Secondary 5A input Oto 50A 1A input Oto 10A Thermal 9 010 9999 Frequency 20 to 80 Hz ACCURACY Is I gt gt gt or gt gt Ios lo gt or Io gt gt Element Range Trigger Reset Time deviation Phase overcurrent 0 1 to 40 x In Is 2 0 95 x Is 2 DT 42 30ms IDMT 5 30ms ll 1 gt 1 2 x Is Earth fault overcurrent 0 02 to 10 x lon los 2 0 95 x los
36. ption F6 0 exclude Aux input 1 include Aux input 633 0279 Relay 2 CBFP delay F14 0 01s 5 1000 50ms 10s 634 027A Relay 3 Function F6 0 none 1 start alarm 2 trip 3 upstream trip 635 027B Relay 3 Reset option F6 0 manual latched 1 auto reset unlatched 636 027C Relay 3 Linked element F18 Bit field Bit 0 10 637 027D Relay 3 CBFP option F6 0 exclude Aux input 1 include Aux input 638 027E Relay 3 CBFP delay F14 0 01s 5 1000 50ms 10s 639 027F Relay 4 Function F6 0 none 1 start alarm 2 trip 3 upstream trip 640 0280 Relay 4 Reset option F6 0 manual latched 1 auto reset unlatched 641 0281 Relay 4 Linked element F18 Bit field Bit 0 10 642 0282 Relay 4 CBFP option F6 0 exclude Aux input 1 include Aux input 643 0283 Relay 4 CBFP delay F14 0 01s 5 1000 50ms 10s 41 Address Parameter Units and Range Protection Group 1 768 0300 Thermal Overoad s o Disable 1 Enable 769 10 300 0 1 3 770 minute 1 200 771 100 150 1 1 5 772 50 200 773 50 200 774 783 0306 030 Reserved read as O writetovod _ 784 pato Jrs o Disable Enable 785 10 2500 0 1 25 786 0312 l gt Delay Tye 7 0 definite time 1 IDMT 787 0 10000 0 1005 788 034 i gt IDMTCuve 0 N1 1 VI 2 E1 3 LTI 4 N11 789 035 kt gt IDMT time multiplier 4 1 100 0 01 1 790 799 0316 031F Reserved read as O writetovo
37. r Active High energizing the input activates the input For Active Low de energizing the input activates the input Input 1 Type Active High If Aux 1 or Aux 2 is selected the following menu is displayed Set the value for the time delay of Aux 1 or 2 definite time Aux timer 500ms If Reset is selected the following menu is displayed Rst Trip Alarm Set to yes to enable the input to reset trip and alarm Yes Ret Thermal 0 Set to yes to enable the input to reset thermal No If Blocking is selected the following menu is displayed Block I gt Set to yes to enable blocking of I gt No Set to yes to enable blocking of gt gt No Block 1 gt gt 2 o Block I gt gt gt Set to yes to enable blocking of gt gt gt No Block lo gt Set to yes to enable blocking of lo gt No Block lo gt gt Set to yes to enable blocking of lo gt gt No Block Thml OL Set to yes to enable blocking of Thermal Overload oc m No If TCS trip circuit supervision is selected the following menu is displayed TCS dela Set the value for the time delay of TCS TCS alarm triggers when the y 500 input is deactivated for longer than the time delay TCS function is enabled when the trip contact output RL1 is not energized Input 2 Menu has similar content as Input 1 menu The settings are applied to input 2 OUTPUT Menu Heading of OUTPUT menu Press Enter to enter submenu content N O E UU E
38. reshold Io gt Then the 1653 followi is displayed Yes following menu is displayed Set the value for the current threshold lo gt 97 0 101 NOTE When delay type 1s IDMT the maximum setting on recommended should be 0 5Ion Set the time delay type of lo gt Setting choices are IDMT and Definite lo gt Delay Type Time IDMT If Definite Time is selected the following menu is displayed tlo gt Set the value for the time delay of lo gt definite time 1 00s If IDMT is selected the following menu is displayed lo gt IDMT Curve Set the type of curve Normal Invrse ktlo gt Set the time multiplier setting value for the curve 0 20 lo gt gt menu lo gt gt Set to Yes to enable second earth fault threshold lo gt gt Then the Vas following menu is displayed lo gt gt Set the value for the current threshold Io gt gt 1 00lon tlo gt gt Set the value for the time delay of lo gt gt definite time 100ms Thermal OL Menu 4 3 Thermal OL Heading of Thermal OL Overload menu Press Enter to enter submenu content 1 Thermal OL Set to Yes to enable thermal overload protection Then the following l menu is displayed Yes 19 gt Set the value for the thermal overload 16 1 50In Te gt Set the value for the thermal time constant 10min Set the value for the k factor k gt 1 10 6 Trip Set the percentage of the thermal overload trip 100 Set the percentage of the
39. ress Up or Down to show another record of Enter to enter sub page for this record Press Clear to clear this record Fault record sub page 1 showing record date and time Press down to show next sub page Press Esc Enter to return to Fault Record title page Fault record sub page 2 showing active protection setting group during fault Press Up down to change sub page Press Esc Enter to return to Fault Record title page 11 IL Magnitude IL2 Magnitude IL3 Magnitude lo Magnitude Clearing all records Clear all rcrds Clear CLEAR Event Records Menu 2 2 Event Rcrds Date 03 02 2011 Time 08 23 44am Clearing all records Clear all rcrds Clear CLEAR Fault record sub page 3 showing 1 1 current during fault Press Up down to change sub page Press Esc Enter to return to Fault Record title page Fault record sub page 4 showing L2 current during fault Press Up down to change sub page Press Esc Enter to return to Fault Record title page Fault record sub page 5 showing L3 current during fault Press Up down to change sub page Press Esc Enter to return to Fault Record title page Fault record sub page 6 showing Lo current during fault Press Up to previous sub page Press Esc Enter to return to Fault Record title page Clearing all record menu is shown when Up is pressed during display of Record 1 s title page or Down is pressed during display of Last records title page Press Clear to clear all record
40. rm RCRD Record CT Current transformer Rmote Remote CBFP Circuit Breaker Failure Protection Rst Reset Chg Change Strt Start CLPU Cold Load Pickup TCS Trip circuit supervision DC Direct current Thml Thermal Dmd Demand Dmnd Demand DMT Definite time EF Earth fault Genrl General IDMT Inverse definite minimum time IL1 Phase 1 current IL2 Phase 2 current IL3 Phase 3 current Io In Earth fault current Invrse Inverse Ip Input IRF Internal Relay Failure LED Light emitting diodes OC Overcurrent 2 0 Front Panel Using the front panel the user can easily navigate through the user friendly menu read measurements and change settings The relay status and alarm or trip records are displayed on the back lit LCD also Ji DO ka 00 In 0 00 Overcurrent And Earth fault Relay MK2200L Front panel 2 1 LCD Display The LCD has 2 lines with 16 characters each Back light is on when a key is pressed and remain on for a predefined time duration The brightness can be adjusted to suit the lighting conditions 2 2 Keypad There are 6 keys on the front panel Up Down Enter and Esc are used to navigate through the menus and adjust the settings Up Scroll up the menus or increase setting value Down Scroll down the menus or decrease setting value Esc To exit from menus submenus or to cancel setting value change Press and hold for 1 5 seconds to return
41. s an option to enable or disable Aux 1 or 2 as a fault condition if Aux 1 or 2 is assigned to a digital input as a tripping source Prolonged activation or latched Aux input could cause the undesirable activation of CBFP relay in this case set Include Aux to No to disable the condition Fault Fault Fault condition Trip relay Ri CBFP relay CBFP delay R4 lt 0 5s 0 5s Timing diagram for CBFP R4 function set to CBFP delay 0 55 25 5 2 Thermal Overload Protection Thermal overload protection can be used to prevent damages to the equipment of the electrical plant A prolonged overloading causes excessive heating which may result in deterioration of the insulation or in extreme cases insulation failure Load current is used to calculate the heating and cooling effect of the equipment to be protected The highest phase current is automatically used as input information for the thermal model The thermal overload protection can be set with both alarm and trip stages 9 Trip and 0 Alarm with 5 below the set for resetting The heating within any plant equipment such as cables or transformers is of resistive type PR x t Thus the thermal time characteristic used in the relay is based on current squared integrated over time Protection equipment is designed to operate continuously at a temperature corresponding to its full load rating where heat generated is balanced with heat dissip
42. thermal overload alarm 9 Alarm To disable this alarm set this value to equal or higher than 9 Trip 100 PROTECTION G2 Menu 5 PROTECTION G2 Group 2 menu has similar content as PROTECTION G1 Group 1 menu The Protection G2 settings is applied when Protection Group 2 is activated INPUT Menu Heading of INPUT menu Press Enter to enter submenu content 6 INPUT Heading of Input 1 menu Press Enter to enter submenu content 6 1 Input 1 19 Set the function of Input 1 Setting choices are None Aux 1 Aux2 Reset Blocking TCS Select Group Cold Load PU pickup and Aux I Sync Clock Input 1 Func Aux I or Aux 2 The input is used as auxiliary alarm or tripping signal If tAux is not assigned to trip output relay whether it is assigned to a start output relay or not activation of the input will generate an Aux Alarm signal after time delay If tAux is assigned to trip output relay the input will generate an Aux Trip signal after time delay Reset Blocking TCS See below Select Group Input deactivated to select Protection Group 1 activated to select Protection Group 2 To enable changing group by input 3 4 Group Select gt Chg Group by must be set to Input Cold Load PU Activation of the input starts CLPU timer and increases protection threshold defined by 3 6 Cold Load PU setting Sync Clock An activation of the input will set the clock to the nearest minute Set how the input 1 is activated Fo
43. y the COMMUNICATION Menu from the front panel 9 1 MODBUS Functions The MODBUS functions described below are used 0x03 0x04 Read Input Holding Registers These 2 commands have the same function Request Communication address 1 byte 0 to 255 Function code 1 byte 0x03 0x04 Starting Address 2 bytes 0x0000 to 0xFFFF Quantity of Registers 2 bytes 0x0001 to 0x007d N CRC 2 bytes 2 bytes CRC Response Communication address 1 byte 1 to 255 Function code 1 byte 0x03 0x04 Byte count 1 bytes 2XN Quantity of Registers N X 2 bytes Value CRC 2 bytes 2 bytes CRC Error communication address 1 byte 1 to 255 Error code 1 byte 0x83 0x84 Exception code 1 bytes 0x01 or 02 or 03 or 04 CRC 2 bytes 2 bytes CRC 0x06 Write Single Register Request Communication address 1 byte 0 to 255 Function code 1 byte 0x06 Register Address 2 bytes 0x0000 to OxFFFF Register value 2 bytes Value CRC 2 bytes 2 bytes CRC Response Communication address 1 byte 1 to 255 Function code 1 byte 0x06 Register value 2 bytes value CRC 2 bytes 2 bytes CRC Error Communication address 1 byte 1 to 255 Error code 1 byte 0x86 Exception code 1 bytes 0x01 or 02 or 03 or 04 CRC 2 bytes 2 bytes CRC 38 0x10 Write Multiple Registers Request Response Error Note communication address 0 is a broadcast command to all the slave The slave will not
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