Microelettrica Scientifica MC2-30V Operation Manual
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Microelettrica Scientifica MC2-30V Operation Manual

Three phase voltage protection relay with islanding detection
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MC2-30V
MO-0499-ING
Doc. N°
MICROPROCESSOR
THREE PHASE VOLTAGE PROTECTION RELAY
WITH
ISLANDING DETECTION
TYPE
"MC2-30V"
OPERATION MANUAL
Copyright 2019
Date
17.03.2022
Rev.
2
Pag.
1
of
63

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  • Page 1 MC2-30V MO-0499-ING Doc. N° MICROPROCESSOR THREE PHASE VOLTAGE PROTECTION RELAY WITH ISLANDING DETECTION TYPE “MC2-30V” OPERATION MANUAL Copyright 2019 Date 17.03.2022 Rev. Pag.

  • Page 2: Table Of Contents

    MC2-30V MO-0499-ING Doc. N° 1. General Utilization and Commissioning Directions _________________________________________________________ 5 1.1 - Storage and Transportation _____________________________________________________________________ 5 1.2 - Installation __________________________________________________________________________________ 5 1.3 - Electrical Connection ___________________________________________________________________________ 5 1.4 - Measuring Inputs and Power Supply _______________________________________________________________ 5 1.5 - Outputs Loading ______________________________________________________________________________ 5 1.6 - Protection Earthing ____________________________________________________________________________ 5...
  • Page 3 MC2-30V MO-0499-ING Doc. N° 17.6.1 - Description of variables ___________________________________________________________________ 35 17.6.2 - Operation _____________________________________________________________________________ 35 17.7 – Function: 2U> (Second Overvoltage Element F59) _________________________________________________ 36 17.7.1 - Description of variables ___________________________________________________________________ 36 17.7.2 - Operation _____________________________________________________________________________ 36 17.8 - Function: 1U< (First Undercurrent Element F27) ___________________________________________________ 36 17.8.1 - Description of variables ___________________________________________________________________ 36...
  • Page 4 MC2-30V MO-0499-ING Doc. N° 23. Dev.Info (Relay Version) __________________________________________________________________________ 61 24. Maintenance ___________________________________________________________________________________ 61 25. Wiring Diagram _________________________________________________________________________________ 62 26. Overall Dimensions ______________________________________________________________________________ 62 27. Electrical Characteristics __________________________________________________________________________ 63 Copyright 2019 Date 17.03.2022 Rev. Pag.

  • Page 5: General Utilization And Commissioning Directions

    MC2-30V MO-0499-ING Doc. N° 1. General Utilization and Commissioning Directions Always make reference to the specific description of the product and to the Manufacturer's instruction. Carefully observe the following warnings. 1.1 - Storage and Transportation Must comply with the environmental conditions stated in the product's specification or by the applicable IEC standards.

  • Page 6: General

    MC2-30V MO-0499-ING Doc. N° 2. General The main features of the relays are: User friendly front face with hi-resolution graphic display (240x128), 10 signal Leds, 6 push-buttons (configurable) and four push-button for complete local managemen, USB for local communication. Eight user programmable Output Relays.

  • Page 7: Keyboard And Display

    MC2-30V MO-0499-ING Doc. N° 4. Keyboard and Display ↓ Push-buttons Programmable Navigation By these buttons the options showed in menu correspondence on the display are selected. Increase These buttons are used to scroll the items of the different menus (Local Control, Measurements, Energy metering etc).

  • Page 8: Icons Of Display

    MC2-30V MO-0499-ING Doc. N° 5. Icons of Display LocalCmd Local Commands Measure Actual Measurements Max Val. Maximum Values TripRec. Trip Recording Counter Partial Counters (Resettable Counter) ROCnt Total Counter (Read Only Counter) Events Event Recording Setting Function Settings System System Settings...

  • Page 9: Signalization

    MC2-30V MO-0499-ING Doc. N° 6. Signalization Eleven signal leds are provided: Led Power Supply Not programmable Green Leds Programmable (via software) N° Colours Green Green Green Yellow Yellow Green In case of auxiliary power supply failure the status of the leds is recorded and reproduced when power supply is restored.

  • Page 10: Leds Configuration

    MC2-30V MO-0499-ING Doc. N° 7. Leds Configuration The relay manage up to 10 signal leds (Programmable), 1 led “Power” (green). For Leds programming (only via software) operate as follows: Open the software program and connect to the relay. Select “Change Windows”...

  • Page 11: Name

    MC2-30V MO-0499-ING Doc. N° The window for leds configuration will show: 7.1 - Name Led name – for leds position see picture 7.2 - Link enable Linked Enable to operate Not Linked Disable 7.3 - Status Light-off Normal condition Light-on When cause appear led is illuminated See “Light Prog”...
  • Page 12 MC2-30V MO-0499-ING Doc. N° 7.7 - Table 1 1U> Start First overvoltage element t1U> Trip 2U> Start Second overvoltage element t2U> Trip 1U< Start First undervoltage element t1U< Trip 2U< Start Second undervoltage element t2U< Trip 1f> Start First overfrequency element t1f>...

  • Page 13: Example: Change Settings For "Led1

    MC2-30V MO-0499-ING Doc. N° 7.8 - Example: Change settings for “Led1” Change settings for “Led1” : “Enable”, “Flashing”, “Latched”, “1U>”. Main Windows: 7.8.1 - “Link Enable” Select “Link enable” related to “Led 1” and press right button on mouse, select “Value change”:...

  • Page 14: Funct.mode

    MC2-30V MO-0499-ING Doc. N° 7.8.3 - “Funct.Mode” Select “Funct.Mode” related to Led 1 and press right button on mouse, select “Value change”: Select “Latched” and press “OK” (if Password is request, see § Password): 7.8.4 -“Functions” Select “Functions” related to Led 1 and press right button on mouse, select “Value change”:...

  • Page 15: User Variables

    MC2-30V MO-0499-ING Doc. N° 8. User Variables The “User Variable” is a result of a logical operation (Or, AND, ecc...), it can be used like other logical output. This operation is possible only via software. 8.1 - Name Internal progressive name 8.2 - User Descr.

  • Page 16: User Description" (User Descr.)

    MC2-30V MO-0499-ING Doc. N° 8.9.1 - “User description” (User descr.) Select “User descr” related to “UserVar<0>” and press right button on mouse, select “Value change”: Trip” into box and press Insert “Voltage “OK”: 8.9.2 - “Linked Functions” Select “Linked Functions” related to “UserVar<0>” and press right button on mouse, select “Value change”:...

  • Page 17: Operation Logic" (Oplogic)

    MC2-30V MO-0499-ING Doc. N° 8.9.3 - “Operation Logic” (Oplogic) Select “Oper Logic” related to “UserVar<0>” and press right button on mouse, select “Value change”: Insert “OR” into box and press “OK”: 8.9.4 - “Timer” Select “Timer” related to “UserVar<0>” and press right button on mouse, select “Value change”:...

  • Page 18: Timer Type

    MC2-30V MO-0499-ING Doc. N° 8.9.5 - “Timer type” Select “Timer” related to “UserVar<0>” and press right button on mouse, select “Value change”: P” into box and Select “Monostable press “OK”: 8.9.6 - “Extra” Select “Extra” related to “UserVar<0>” and press right button on mouse, Select “10”...

  • Page 19: Local Commands

    MC2-30V MO-0499-ING Doc. N° 9. Local Commands Commands” allow to operate from relay front face controls like Thermal Memory reset, Leds reset, etc. “Local Menu Description Password Clear Reset of signal Leds Relays Clear Manual reset of output relays main C/B...

  • Page 20: Measure

    MC2-30V MO-0499-ING Doc. N° 10. Measure Real time values as measured during the normal operation. • Press “Menu” for access to the main menu with icons. • Select “Measure” icon with pushbutton “Increase” or “Decrease”. • Press “Select” for access.

  • Page 21: Trip Recording

    MC2-30V MO-0499-ING Doc. N° 12. Trip Recording Display of the function which caused the tripping of the relay plus values of the measurement at the moment of tripping. The last 30 events are recorded. The memory buffer is refreshed at each new relay tripping (FIFO logic).
  • Page 22 MC2-30V MO-0499-ING Doc. N° • Scroll with pushbuttons “Increase” or “Decrease” the available measurements. • Select “Exit” to go back to “5” for another selection, or “2” go back to the main menu. • Select “Erase” with button “Decrease”. • Press “Select” to execute the commands; All Trips recorded are erased.

  • Page 23: Partial Counters

    MC2-30V MO-0499-ING Doc. N° 13. Partial Counters Partial counters of the number of operations for each of the relay functions. Display 1U> Operations counters First overvoltage element → 2U> Operations counters second overvoltage element 1U< Operations counters First undervoltage element 2U<...

  • Page 24: Total Counters

    MC2-30V MO-0499-ING Doc. N° 14. Total Counters Counters of the total number of operations of each individual function. These counters cannot be reset Display 1U> Operations counters First overvoltage element → 2U> Operations counters second overvoltage element 1U< Operations counters First undervoltage element 2U<...

  • Page 25: Events

    MC2-30V MO-0499-ING Doc. N° 15. Events Display of the function which caused any of the following events: - Status change of digital Inputs/Outputs. - Start of protection functions – Trip of protection function – Function reset. The last 500 events are recorded at pick-up (rise) or drop-out (fall).

  • Page 26: Events On Display

    MC2-30V MO-0499-ING Doc. N° 15.1 – Events on display Functions Events Events Description Status Displayed 1U> 1U> Start Rise 1U> First overvoltage element t1U> t1U> Trip Rise Fall 2U> 2U> Start Rise 2U> Second overvoltage element t2U> t2U> Trip Rise Fall 1U<...

  • Page 27: System (System Parameters)

    MC2-30V MO-0499-ING Doc. N° 16. System (System parameters) Setting of system parameters. CTs&PTs Prim. Phase PT Primary (1 ÷ 500) step 0.01 kV → Sec. Secondary (50 / 150) step → Sys.Ratings (50 / 60) → Nominal Frequency (0.1 ÷ 500) step 0.01 kV...

  • Page 28: Settings

    MC2-30V MO-0499-ING Doc. N° 17. Settings Two complete banks of settings of the programmable variables are available in the “SETTING” menu. Both “Group #1” to “Group #4” include the hereunder listed variables. Indicates the Setting Group that is actually being modified.

  • Page 29: Modifying The Setting Of Variables

    MC2-30V MO-0499-ING Doc. N° 17.1 - Modifying the setting of variables To modify any variable setting by the keyboard, proceed as follows: 90.000 %Un” to 80.000 %Un”) (example: change setting of element “1U>”, from “Us “Us Press “Menu” for •...

  • Page 30: Password

    MC2-30V MO-0499-ING Doc. N° 17.2 - Password The password is requested any time the user wishes to modify any password protected parameter (example “1U>” menu “Setting”). The factory default password is “1111 ”. The password is only modifiable with the software.

  • Page 31: Menu: Communic. (Communication)

    MC2-30V MO-0499-ING Doc. N° 17.3 – Menu: Communic. (Communication) Options BRLoc 19200 [9600 / 19200 / 38400] → PRRem MODBUS [MODBUS / IEC103] → Node Address → Addr. [1 ÷ 250] 17.3.1 – Description of variables BRRem USB (Front Panel) serial communication speed...

  • Page 32: Menu: Customise (Human Machine Interface)

    MC2-30V MO-0499-ING Doc. N° 17.4 - Menu: Customise (Human Machine Interface) Options Lang English [English / Loc.Lang] → Light [Auto / On] → Timers tBckL step → (5÷120) 17.4.1 – Description of variables Lang Set Language Light Set Display backlight...

  • Page 33: Function: Filesys (File System And Disk Management)

    MC2-30V MO-0499-ING Doc. N° 17.5 - Function: FileSys (File system and Disk management) Options iDwr enable [enable / disable] → OniDF StopWrite [StopWrite / DelOldFiles] → 17.5.1 - Description of variables iDwr Internal Disk write Enable : Protection log file write enabled...
  • Page 34 MC2-30V MO-0499-ING Doc. N° 17.5.2.2 – Faults log file Example: Directory Descriptions TRIPS 2016 Year Month Trips_15.06.2016.txt Trips log File Trips_15.06.2016.txt Date Time Event Values 2016/06/15 08:17:27:200 tTCS Uab=0.0; Ubc=0.0; Uca=0.0; 2016/06/15 10:31:03:901 tTCS Uab=0.0; Ubc=0.0; Uca=0.0; 17.5.2.3 – Oscillographic file...

  • Page 35: Function: 1U> (First Overvoltage Element F59)

    MC2-30V MO-0499-ING Doc. N° 17.6 - Function: 1U> (First Overvoltage Element F59) Status Enab. [No / Yes] → Oper. Levels %Un (10 ÷ 190) step → Timers → (0.08 ÷ 100) step 0.01 17.6.1 - Description of variables Enab. Function enabling (No = Disable / Yes = Enable)

  • Page 36: Function: 2U> (Second Overvoltage Element F59)

    MC2-30V MO-0499-ING Doc. N° 17.7 – Function: 2U> (Second Overvoltage Element F59) Status Enab. [No / Yes] → Oper. Levels %Un (10÷190) step → Timers → (0.08÷100) step 0.01 17.7.1 - Description of variables Enab. Function enabling (No = Disable / Yes = Enable)

  • Page 37: Function: 1F> (First Overfrequency Element F81>)

    MC2-30V MO-0499-ING Doc. N° 17.10 - Function: 1f> (First Overfrequency Element F81>) Status Enab. [No / Yes] → Oper. Levels (40÷70) step 0.01 → Timers → (0.1÷100) step 0.01 17.10.1 - Description of variables Enab. Function enabling (No = Disable / Yes = Enable)

  • Page 38: Function: 1F< (First Underfrequency Element F81<)

    MC2-30V MO-0499-ING Doc. N° 17.12 - Function: 1f< (First Underfrequency Element F81<) Status Enab. [No / Yes] → Oper. Levels (40÷70) step 0.01 → Timers step 0.01 → (0.1÷100) 17.12.1 - Description of variables Enab. Function enabling (No = Disable / Yes = Enable)

  • Page 39: Function: 1Uo> (First Zero Sequence Overvoltage Element F59Vo)

    MC2-30V MO-0499-ING Doc. N° 17.14 - Function: 1Uo> (First Zero Sequence Overvoltage Element F59Vo) Status Enab. [No / Yes] → Oper. Levels %Un (1÷100) step → Timers (0.08÷100) step 0.01 → 17.14.1 - Description of variables Enab. Function enabling (No = Disable / Yes = Enable)

  • Page 40: Function: U1< (First Voltmetric Unlock Islanding Detector Element F81V)

    MC2-30V MO-0499-ING Doc. N° 17.16 - Function: U1< (First Voltmetric unlock islanding detector Element F81v) Status Enab. [No / Yes] → Oper. Levels %Un (10÷190) step → Timers (0.08÷100) step 0.01 → 17.16.1 - Description of variables Enab. Function enabling (No = Disable / Yes = Enable)

  • Page 41: Function: 1Df/Dt (First Frequency Rate Of Change Element)

    MC2-30V MO-0499-ING Doc. N° 17.18 - Function: 1df/dt (First Frequency rate of change Element) Status Enab. [No / Yes] → Options (POS/NEG/POS-NEG) → Oper. Levels df/dt Hz/s (0.1÷9.9) step → %Un (30÷90) step → 17.18.1 - Description of variables Enab.

  • Page 42: Function: Tcs (Trip Circuit Supervision)

    MC2-30V MO-0499-ING Doc. N° 17.20 - Function: TCS (Trip Circuit Supervision) Status Enab. [No / Yes] → Timers (0.1÷100) step 0.01 → 18.20.1 - Description of variables Enab. Function enabling (No = Disable / Yes = Enable) Trip time delay 17.20.2 - Operation...

  • Page 43: Function: Irf (Internal Relay Fault)

    MC2-30V MO-0499-ING Doc. N° 17.21 - Function: IRF (Internal Relay Fault) In this menu it is possible to configurate the operation of the Relay Internal Fault detection element Status Enab. [No / Yes] → Timers tIRF (5÷200) step 0.01 →...

  • Page 44: Available On Software

    MC2-30V MO-0499-ING Doc. N° 17.22.3 – Available on software DskClean Disk near Full clean operation is required DskFull Disk Full Write should be lock DskWR Disk write in progress DskFRMT Disk Format in progress DskCHK Check disk in progress 1U>...

  • Page 45: Setting "User Trigger Oscillo

    MC2-30V MO-0499-ING Doc. N° 17.22.4 – Setting “User Trigger Oscillo” The “User trigger Oscillo” is a result of a logical operation (Or, AND, ecc...), it can be used like other logical output. This operation is possible only via software. 17.22.4.1 - Name Internal name 17.22.4.2 - User descr.

  • Page 46: Example: Setting "Oscillo Trigger Logic

    MC2-30V MO-0499-ING Doc. N° 17.22.5 – Example: Setting “Oscillo Trigger Logic” Open software program and connect to the relay. Select “Change Windows” from “Menu” button Select “User Variable” Setting for “User Trigger Oscillo” : “1U>/2U>”, “AND”, “1”, “Monostable”, “10”. 17.22.5.1 – “Linked Functions”...
  • Page 47 MC2-30V MO-0499-ING Doc. N° 17.22.5.2 – “Operation Logic” (Oplogic) Select “Oper Logic” related to “User Trigger Oscillo” and press right button on mouse, select “Value change”: Insert “AND” into box and press “OK”: 17.22.5.3 – “Timer” Select “Timer” related to “User Trigger Oscillo” and press right button on mouse, select “Value change”:...
  • Page 48 MC2-30V MO-0499-ING Doc. N° 17.22.5.4 – “Timer type” Select “Timer” related to “User Trigger Oscillo” and press right button on mouse, select “Value change”: P” into box and Select “Monostable press “OK”: 17.22.5.5 – “Extra” Select “Extra” related to “User Trigger Oscillo” and press right button on mouse, Select “10”...

  • Page 49: Function: Cb Mngn (Control C/B)

    MC2-30V MO-0499-ING Doc. N° 17.23 - Function: CB Mngn (Control C/B) This menu allows to configurate the command for C/B operation. Options Ignored [Ignored / Active] → Enable [Disable / Enable] → Key0 None [None / P1 / P2 / P3 / P4 / P5 / P6] →...
  • Page 50 MC2-30V MO-0499-ING Doc. N° 17.23.2.2 – “User Variables” Select “User Variable”: Assign to: Type Linked Functions UserVar(0) Gate.1 manOpCmd,Gen.Trip Manual Open Command, Generic Trip UserVar(0) Gate.2 CL-Cmd Close Command 17.21.2.3 – “DO Configuration” Select “DO Configuration”: Assign to: Type Linked Functions 0.R1...

  • Page 51: Function: Extrescfg (External Reset Configuration)

    MC2-30V MO-0499-ING Doc. N° 17.24 - Function: ExtResCfg (External Reset Configuration) This menu allows to select the edge polarity of the signal on the digital input configured to reset the relay after a trip. The reset input will reset all the output relays configured as manual reset (latched), the signalisation of the trip on the display and the indication of the LED are cleared also.

  • Page 52: Example

    MC2-30V MO-0499-ING Doc. N° 18.2.1 – Example 18.2.2 – Name Logical Input name 18.2.3 – Status Logical Input status 18.2.4 – Functions Selection function 18.2.5 – Example: Setting “Digital Input” Open software program and connect to the relay. Select “Change Windows”...

  • Page 53: Physical Outputs

    MC2-30V MO-0499-ING Doc. N° 18.3 – Physical Outputs The output relay are fully user programmable and controlled by any protection functions and by any digital inputs. 0.R1 Programmable (R1) 0.R2 Programmable (R2) 0.R3 Programmable (R3) 0.R4 Programmable (R4) Available in the relay 0.R5...

  • Page 54: Functions - Operation Mode

    MC2-30V MO-0499-ING Doc. N° 18.4.2 - Functions - Operation Mode Automatic : In this mode the output relay is “operated” (energized if “N.D.”, denergized if “N.E.”) when the controlling Functional Output is activated and it is reset to the “non operated”...
  • Page 55 MC2-30V MO-0499-ING Doc. N° 18.4.2.1 - Example: Change settings for “0.R1” Change settings for “0.R1” : “1U>”, “Normally Denergized”, “Automatic reset”, “0.5”. 18.4.2.2 - “Linked Functions” Functions” related to Select “Linked 0.R1 and press right button on mouse, select “Value change”:...
  • Page 56 MC2-30V MO-0499-ING Doc. N° 18.4.2.3 - “Output Config” Select “Output Config” related to “0.R1” and press right button on mouse, select “Value change”: Select “Normally Denergized” from combo box and press “OK” (if Password is request, see § Password) Copyright 2019 Date 17.03.2022...
  • Page 57 MC2-30V MO-0499-ING Doc. N° 18.4.2.4 - “Function” Select “Function” related to “0.R1” and press right button on mouse, select “Value change”: Select “Manual reset” from combo box and press “OK” (if Password is request, see § Password): 18.4.2.5 - “tON”...

  • Page 58: Infostatus

    MC2-30V MO-0499-ING Doc. N° 19. InfoStatus In this menu is shown the status of relay. To configure Local/Remote see § CB Mngn and Digital input (Local state and Remote state); the configuration is possible only via software. Options LocR Disable →...

  • Page 59: Date And Time

    MC2-30V MO-0499-ING Doc. N° 20. Date and Time In this menu it is possible to configurate the Date and Time Date: 20YY / MM / DD (2000/01/01 ÷ 2099/12/31) YY = Year / MM = Month / DD = Day...

  • Page 60: Clock Synchronization

    MC2-30V MO-0499-ING Doc. N° • As above for changing the “Hours” • Press “Next” to go to the next setting. • As above for changing the “Minutes” • Press “Next” to go to the next setting. • The Day of the Week is calculated and displayed automatically.

  • Page 61: Healthy (Diagnostic Information)

    MC2-30V MO-0499-ING Doc. N° 22. Healthy (Diagnostic Information) The relay operates a continuous checking of the vital functionalities and in case an internal failure is detected, the I.R.F. function (see § I.R.F.) is activated and the Power/IRF led is set to flashing.

  • Page 62: Wiring Diagram

    MC2-30V MO-0499-ING Doc. N° 25. Wiring Diagram 26. Overall Dimensions Copyright 2019 Date 17.03.2022 Rev. Pag.

  • Page 63: Electrical Characteristics

    This publication may be subject to alteration without prior notice. Therefore, a printed copy of this document may not be the latest revision. Please contact your local representative for the latest update. The trademarks MS Microelettrica Scientifica, Knorr and Knorr-Bremse as well as the figurative mark “K” are registered. Copyright ©...

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