Mikro X30 User Manual
  1. Manuals
  2. Brands
  3. Mikro Manuals
  4. Relays
  5. X30
  6. User manual

Mikro X30 User Manual

Combined overcurrent & earth fault relay
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the X30 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Mikro X30

Summary of Contents for Mikro X30

  • Page 2 COMBINED OVERCURRENT & EARTH FAULT RELAY Ver 1.00...

  • Page 3: Table Of Contents

    Table of Contents Table of Contents 1.0 Introduction 1.1 Symbols and Definitions ............6 1.2 Dimension of X30 ..............7 2.0 Installation 2.1 Mounting ................. 8 2.2 Terminal Connection ............11 2.3 Wiring ................12 3.0 Display 3.1 Keypad ................14 3.2 LEDs ................
  • Page 4 Appendix A – Application and Formula Circuit Breaker Failure Protection ..........52 Thermal Overload Protection ............53 Trip Circuit Supervision ............56 Appendix B – IDMT Curve Normal Inverse ..............60 Very Inverse ................ 61 Normal Inverse 1.3/10 .............. 62 Long-time Inverse ..............

  • Page 5: Introduction

    All these elements are connected to protection current transformers that have 5A rated CT on secondary part. As the name suggest, Mikro X30 provides the user with 2x16 LCD for displaying its various measurement parameter such as: Current Measurement, Fault Records, Event Records, Settings and others.

  • Page 6: Symbols And Definitions

    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: : Alternating Current : Pickup ACK : Acknowledge RCRD : Record Alrm : Alarm Rmote : Remote : Current Transformer : Reset CBFP : Circuit Breaker...

  • Page 7: Dimension Of X30

    1.2 Dimension of X30 96mm Front 96mm View 125mm Side View 105mm...

  • Page 8: Installation

    - Operating temperature: -5°C to +55°C - Humidity: 56 days at 93%, 40°C non-condensing - Dust free environment away from electrical noise and radiation. 2.1 Mounting a) Insert the X30 through a 91mm x 91mm switch-gear panel as shown below: Panel Cutout 91mm +/- 0.5mm...
  • Page 9 Slide the retainer clip along the slots on both sides of the X30 until the device is tightly secured on the switch-gear panel. The retainer clip can be removed by lifting the tab lightly at the handle end. Slide the retainer...
  • Page 10 c) There are two methods to open door cover, refer below: Method 1: Open cover from right slot Method 2: Open cover from left slot...

  • Page 11: Terminal Connection

    2.2 Terminal Connection Connection Function Description Terminal Auxiliary supply input Auxiliary supply input Normally close contact for tripping contact R1 Normally open contact for tripping contact R1 Common contact for tripping contact R1 Common contact for tripping contact R2 Normally open contact for tripping contact R2 Normally close contact for tripping contact R2 5A CT input for IL1 5A common CT input for IL1...

  • Page 12: Wiring

    2.3 Wiring With 3 phase 4 wires...
  • Page 13 With 3 phase 3 wire...

  • Page 14: Display

    3.0 Display 3.0 Display a) Auxiliary LED Indication b) Trip LED Indication c) Alarm LED Indication d) 2x16 LCD Display e) “ESC” Button f) “UP” Button g) “DOWN” Button h) “ENTER” Button i) “CLEAR” Button j) “RECORD” Button 3.1 Keypad Up, Down, Enter and Esc are used to navigate through the menus and adjust the settings.

  • Page 15: Leds

    Clear : To reset tripping, reset latched relay. If “CLEAR” Scroll is enabled (under Configurations->Display menu) and during alarm status, it 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.

  • Page 16: Function

    4.0 Function Figure below shows menu map for X30. It includes the setting, input status, output status and measurement display for X30. These menus can be accessed by pressing ESC, UP, DOWN, ENTER, CLEAR and RECORD buttons. 4.1 Main Page Enter Refer to 4.2 Setting...

  • Page 17: Menu

    4.2 Menu IL1:0.00 IL2:0.00 IL3:0.00 ILo:0.00 Enter Enter Refer to 4.3.1 1.MEASUREMENTS Down Enter Refer to 4.3.2 2.RECORDS Down Enter Refer to 4.3.3 3.CONFIGURATION Down Enter Refer to 4.3.4 4.PROTECTION G1 Down Enter Refer to 4.3.4 5.PROTECTION G2 Down Enter Refer to 4.3.5 6.INPUT Down...

  • Page 18: Sub Menu

    4.3 Sub Menu 4.3.1 Menu Measurement LCD Display Description 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.

  • Page 19: Records Menu

    4.3.2 Records Menu 4.3.2.1 Fault Records Whenever any trip fault happens in X30, information of trip value, element, source, date, time and all phase current magnitude values will be stored in fault records. There is total 50 fault records storage available in X30.

  • Page 20: Configuration Menu

    4.3.3 Configuration Menu 4.3.2.1 Op parameter Menu LCD Display Description This password is required when changing relay Password settings. Description Model name of this relay Firmware Version of the firmware Frequency Set the nominal value of the line frequency 4.3.2.2 CT Ratio Menu LCD Display Description Set the rated primary current of the line/Phase Line CT Pri...
  • Page 21 4.3.2.3 Date & Time Menu LCD Display Description Date Set the date. Date Format Set the date format for display Time Set the time. Time Format Set the time format for display. 4.3.2.4 Group Select Menu LCD Display Description Set whether the protection group setting is Chg Group changed by Menu or Input.
  • Page 22 4.3.2.6 Cold & Load Pickup Menu 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 an extended cooling period, air conditioning, or inductive loads that draw high starting current like motor.

  • Page 23: Protection G1 & G2 Menu

    4.3.2.7 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. LCD Display Description Demand Set to YES to enable demand alarm. Alarm? Idmnd>...
  • Page 24 I>> Set the value for the current threshold I>>. Set the value for the time delay of I>> definite tI>> time. Set to Yes to enable third phase overcurrent I>>>? threshold. Set to Yes to enable I>>> operated on current I>>>...

  • Page 25: Input Menu

    4.3.4.3 Thermal OL Menu LCD Display Description Thermal OL? Set to Yes to enable thermal overload protection. Iθ> Set the value for the thermal overload Iθ>. Tθ> Set the value for the thermal time constant. k> Set the value for the k factor θ...
  • Page 26 Blocking Type Block I>? Set to Yes to enable blocking of I> Block I>>? Set to Yes to enable blocking of I>> Block I>>>? Set to Yes to enable blocking of I>>> Block Io>? Set to Yes to enable blocking of Io> Block Io>>? Set to Yes to enable blocking of Io>>...

  • Page 27: Output Menu

    Sync Clock An activation of the input will set the clock to the nearest minute. TCS alarm triggers when the input is deactivated for longer than the time delay. TCS function is enabled when the trip contact output (RL1) is not energized. 4.3.6 Output Menu 4.3.6.1 Relay 1 Menu LCD Display...
  • Page 28 4.3.6.2 Relay 2 Menu LCD Display Description Set the function of output Relay 2. Settings are Relay 2 Func included Trip, Start, CBFP and IRF. Set reset method of relay, Auto is unlatched or Reset Manual is latched. Trip Function tI>? Assign I>...

  • Page 29: Communication Menu

    Set if Aux 1 input is included as fault condition. Include Aux? Prolonged activation or latched Aux input could cause the undesirable activation of CBFP relay. 4.3.6.3 Maintenance Mode Menu In maintenance mode, user is able to do trip simulation test for each output relay contact.

  • Page 30: Password

    5.0 Password 5.0 Password Password Protection Relay settings can be view anytime but locked from being changed. A password is 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"...

  • Page 31: Technical Data

    6.0 Technical Data 6.0 Technical Data 6.1 Ratings Auxiliary Supply Rate voltage 100-240V AC / 140-340V DC Operation voltage 85-265V AC / 110-370V DC Rate frequency 50 or 60 Hz Operating frequency 45 - 65 Hz Power consumption 6 VA max Current Inputs Rated current In 5A by connections...

  • Page 32: Records

    Output Relay Rated voltage 250V AC/DC Contact arrangement Change-over Continuous carry Expected electrical life 100,000 Operations at rated load Expected mechanical life 5x10^6 operations 6.2 Records Type Records Fault Record Up to 50 records Event Record Up to 250 records Alarm Record Up to 30 records 6.3 Setting Ranges...
  • Page 33 I>> 0.5 to 20x In tI>> 0 to 100s I>>>? Yes or No I>>> 0.5 to 20x In I>>> Sample Yes or No tI>>> 0 to 100s Earth Fault Yes or No Io> 0.02 to 2 x In Io> Delay type IDMT or Definite Time tIo>...

  • Page 34: Measurement Range

    Cold Load Pickup CLPU Level 100% to 500% CLPU tCL 0.1 to 600s Input Aux timer 0 to 600s TCS delay 0.1 to 10s Output Aux timer 0 to 600s Communication Communication? Yes or No Remote set? Yes or No 2400, 4800, 9600, 19200 or Baud Rate 38400...

  • Page 35: Accuracy

    Earth Current Secondary 5A input 0 to 50A Thermal θ 0 to 9999% Frequency 20 to 80Hz 6.5 Accuracy Phase Overcurrent I>,I>> and I>>> Measuring Range 0.1 to 20 x In ±2% of set value or 20mA Accuracy of pickup current whichever is greater ±2% or 30ms whichever is Accuracy of DFT time...

  • Page 36: Insulation Test

    6.6 Insulation Test IEC60255-5 Insulation Test High voltage dielectric withstand test 2kV rms, 1 minute High voltage impulse test 5kV, 1.2/50us 6.7 EMC Standard Test IEC60255-26 standard Test Electrical fast transient IEC61000-4-4, Power Supply 4kV, 5 kHz Electrical fast transient IEC61000-4-4, other inputs 2kV, 5 kHz Surge IEC6100-4-5,...

  • Page 37: Environmental Conditions

    6.8 Environmental Conditions Environmental Conditions Temperature -5°C to 55°C 56 days at 93% RH and 40°C Humidity non-condensing Enclosure protection IP54 when panel mounted...

  • Page 38: Modbus Protocol

    7.0 MODBUS Protocol 7.0 MODBUS Protocol 7.1 MODBUS Functions 0x03/0x04 Read Input/Holding Registers 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) 2 bytes 2 bytes CRC Response...
  • Page 39 0x06 Write Single Register Request Communication address 1 byte 0 to 255 Function code 1 byte 0x06 Register Address 2 bytes 0x0000 to 0xFFFF Register value 2 bytes Value 2 bytes 2 bytes CRC Response Communication address 1 byte 1 to 255 Function code 1 byte 0x06...
  • Page 40 0x10 Write Multiple Registers Request Communication address 1 byte 0 to 255 Function code 1 byte 0x10 Starting Address 2 bytes 0x0000 to 0xFFFF Quantity of Registers 2 bytes 0x0001 to 0x007b (N) Byte count 1 byte 2 X N Register value N X 2 bytes Value 2 bytes...

  • Page 41: Modbus Register

    7.2 MODBUS Register Address Parameter Format Unit Range (HEX) Read only. Function 03h or 04h 0000 ASCII '00' Device type - main 0001 ASCII '02' 0002 ASCII '04' 0003 Device type - sub ASCII '00' 0004 ASCII 'XX' Version number - main 0005 ASCII 'XX'...
  • Page 42 Address Parameter Format Unit Range (HEX) Measurements and relay status. Read only. Function 03h or 04h 0022 IL3 Max high word 0.01 0-9.99X10 Ampere 0023 IL3 Max low word (999kA) 0024 ILo Max high word 0.01 0-9.99X10 Ampere 0025 ILo Max low word (999kA) 0026 IL1 Avg high word...
  • Page 43 Address Parameter Format Unit Range (HEX) Settings. Read/Write. Function 03h,04h, 06h, 10h 0=Group 1, 020C Setting Group 1=Group 2 LCD backlight on 020D minute 1-60 duration 0=low, 020E LCD backlight brightness 1=medium, 2=high 0=Disable, 020F Clear key to scroll settings F6 1=Enable 0=Disable, 0210...
  • Page 44 Address Parameter Format Unit Range (HEX) Settings. Read/Write. Function 03h,04h, 06h, 10h 10-60000 0231 Cold Load Pickup tCL 0.01s (600s) 0232 Cold Load Pickup element F15 Bit field Bit 0-5 0233- Reserved 023F 0=None, 1=Aux1, 2=Reserved, 3=Reset, 4=Blocking, 5=Trip, 6=Group 0240 Input 1 Function select,...
  • Page 45 Address Parameter Format Unit Range (HEX) Settings. Read/Write. Function 03h,04h, 06h, 10h 0=Manual, 0271 Relay 1 Reset option 1=Auto 0272 Relay 1 Linked element Bit field Bit 0-10 0273- Reserved 0274 0=None, 1=Start/alarm, 0275 Relay 2 Function 2=Trip, 3=Upstream trip 0=Manual, 0276 Relay 2 Reset option...
  • Page 46 Address Parameter Format Unit Range (HEX) Protection Group 1. Read/Write. Function 03h, 04h, 06h, 10h 0=Definite 0312 I> Delay Type time, 1=IDMT 0-10000 0313 tI> Definite Time 0.01s (100s) 0=NI, 1=VI, 0314 I> IDMT Curve 2=EI, 3=LTI, 4=NI1 0315 ktI> IDMT time multiplier F14 0.01 1-100 (1) 0316-...
  • Page 47 Address Parameter Format Unit Range (HEX) Protection Group 1. Read/Write. Function 03h, 04h, 06h, 10h Earth Fault Low Set 0-10000 0333 0.01s Definite Time tIo> (100s) 0=NI, 1=VI, Earth Fault Low Set 0334 2=EI, 3=LTI, IDMT Curve 4=NI1 Earth Fault Low Set 0335 0.01 1-100 (1)
  • Page 48 Each Fault Record consists of 16 words: Word Number Description Format Units and scale Range Year year 0 - 199 (as 2000 - 2199) month, day month,day 0 - 12, 0 - 31 hour, minute hour, minute 0 - 23, 0 - 59 Milliseconds 0 - 59999 setting group...
  • Page 49 Each Event or Alarm Record consists of 6 words: Word Number Description Format Units and scale Range Year year 0 - 199 (as 2000 - 2199) month, day month,day 0 - 12, 0 - 31 hour, minute hour, minute 0 - 23, 0 - 59 Milliseconds 0 - 59999 Record code...

  • Page 50: Modbus Mapping Format

    7.3 MODBUS Mapping Format CODE 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: Reserved Bit 13: Back port communication Bit 14: Back port unread alarm record...
  • Page 51 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 –...

  • Page 52: Appendix A - Application And Formula

    Appendix A Appendix A – Application and Formula 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.

  • Page 53: Thermal Overload Protection

    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.
  • Page 54 Equivalent current corresponding to the RMS value of the largest phase current. Iθ > = Full load current rating given by the national standard or by the supplier. Factor associated to the thermal state formula. θ Initial thermal state. If the initial thermal state = 30%, then θ...
  • Page 55 Thermal Overload Curves...

  • Page 56: Trip Circuit Supervision

    Trip Circuit Supervision Trip Circuit Supervision (TCS) enables the trip circuit to be monitored. To enable TCS function, set one of the Digital Input function to TCS (at the INPUT Menu), Input Type as Active High and set the appropriate TCS delay time.
  • Page 57 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 R1 in series with 52b, if the Trip contact R1 is latched or it stays involuntarily closed.
  • Page 58 Examples 3: Trip Coil and Auxiliary Contacts Monitoring when CB is open or closed In this exmple 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.
  • Page 59 Recommended Resistor R1 Value The recommended maximum resistor R1 value for various auxiliary voltage is shown: Auxiliary 24Vdc 36Vdc 48Vdc 60Vdc 72Vdc 110Vdc 132Vdc Voltage, Ua Maximum R1 4.7k 9.1k value (Ohm) Power rating Auxiliary Voltage, 220Vdc 264Vdc Maximum R1 value (Ohm) Power rating (W) For the case of example 3, the maximum R1 value should be deducted by...

  • Page 60: Appendix B - Idmt Curve

    Appendix B Appendix B – IDMT Curve Normal Inverse...

  • Page 61: Very Inverse

    Very Inverse...

  • Page 62: Normal Inverse 1.3/10

    Normal Inverse 1.3/10 0.05...

  • Page 63: Long-Time Inverse

    Long-time Inverse...

  • Page 64: Extremely Inverse

    Extremely Inverse...

Table of Contents