Microelettrica Scientifica MC2-30T Operation Manual
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Microelettrica Scientifica MC2-30T Operation Manual

Microprocessor overcurrent and earth fault relay
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MC2-30T
MO-0483-ING
Doc. N°
MICROPROCESSOR
OVERCURRENT AND EARTH FAULT
RELAY
TYPE
"MC2-30T"
OPERATION MANUAL
Copyright 2016
Date
17.03.2022
Rev.
2
Pag.
1
of
70

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  • Page 1 MC2-30T MO-0483-ING Doc. N° MICROPROCESSOR OVERCURRENT AND EARTH FAULT RELAY TYPE “MC2-30T” OPERATION MANUAL Copyright 2016 Date 17.03.2022 Rev. Pag.

  • Page 2: Table Of Contents

    MC2-30T MO-0483-ING Doc. N° 1. General Utilization and Commissioning Directions _________________________________________________________ 4 1.1 - Storage and Transportation _____________________________________________________________________ 4 1.2 - Installation __________________________________________________________________________________ 4 1.3 - Electrical Connection ___________________________________________________________________________ 4 1.4 - Measuring Inputs and Power Supply _______________________________________________________________ 4 1.5 - Outputs Loading ______________________________________________________________________________ 4 1.6 - Protection Earthing ____________________________________________________________________________ 4...
  • Page 3 MC2-30T MO-0483-ING Doc. N° 17.6.2 - Trip and Alarm __________________________________________________________________________ 35 17.7 - Function: 1I> (First Overcurrent Element F50/51) _________________________________________________ 37 17.7.1 - Description of variables ___________________________________________________________________ 37 17.7.2 – Blocking Logic (BO-BI) ___________________________________________________________________ 38 17.7.3 - Automatic doubling of Overcurrent thresholds on current inrush ___________________________________ 38 17.8 –...

  • Page 4: General Utilization And Commissioning Directions

    MC2-30T MO-0483-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 5: General

    MC2-30T MO-0483-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 6: Keyboard And Display

    MC2-30T MO-0483-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 7: Icons Of Display

    MC2-30T MO-0483-ING Doc. N° 5. Icons of Display LocalCmd LOCAL COMMANDS Measure ACTUAL MEASUREMENTS TripRec. TRIP RECORDING Counter PARTIAL COUNTERS (RESETTABLE COUNTER) ROCnt TOTAL COUNTER (READ ONLY COUNTER) Events EVENT RECORDING Setting FUNCTION SETTINGS System SYSTEM SETTINGS InfoStatus INFORMATION STATUS...

  • Page 8: Signalization

    MC2-30T MO-0483-ING Doc. N° 6. Signalization Eleven signal leds are provided: Led Power Supply Not programmable Green Leds Programmable (via software) N° Colours Default 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 9: Leds Configuration

    MC2-30T MO-0483-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 10: Name

    MC2-30T MO-0483-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 11 MC2-30T MO-0483-ING Doc. N° 7.7 - Table 1 Alarm Thermal Image T> T> Trip 1I> Start First overcurrent element t1I> Trip 2I> Start Second overcurrent element t2I> Trip 3I> Start Third overcurrent element t3I> Trip 1Io> Start First earth fault element t1Io>...

  • Page 12: Example: Change Settings For "Led1

    MC2-30T MO-0483-ING Doc. N° 7.8 - Example: Change settings for “Led1” Change settings for “Led1” : “Enable”, “Flashing”, “Latched”, “1I>”. Main Windows: 7.8.1 - “Link Enable” enable” related to “Led 1” and press right button on mouse, select Select “Link “Value change”:...

  • Page 13: Funct.mode

    MC2-30T MO-0483-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 14: User Variables

    MC2-30T MO-0483-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 15: User Description" (User Descr.)

    MC2-30T MO-0483-ING Doc. N° 8.9.1 - “User description” (User descr.) descr” related to “UserVar<0>” and press right button on mouse, Select “User select “Value change”: Insert “Current Trip” into box and press “OK”: 8.9.2 - “Linked Functions” Functions” related to “UserVar<0>” and press right button on Select “Linked...

  • Page 16: Operation Logic" (Oplogic)

    MC2-30T MO-0483-ING Doc. N° 8.9.3 - “Operation Logic” (Oplogic) Logic” related to “UserVar<0>” and press right button on mouse, Select “Oper 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 17: Timer Type

    MC2-30T MO-0483-ING Doc. N° 8.9.5 - “Timer type” Select “Timer” related to “UserVar<0>” and press right button on mouse, select “Value change”: Select “Monostable P” into box and press “OK”: 8.9.6 - “Extra” Select “Extra” related to “UserVar<0>” and press right button on mouse, Select “10”...

  • Page 18: Local Commands

    MC2-30T MO-0483-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...

  • Page 19: Measure

    MC2-30T MO-0483-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 20: Trip Recording

    MC2-30T MO-0483-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 21 MC2-30T MO-0483-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 22: Partial Counters

    MC2-30T MO-0483-ING Doc. N° 13. Partial Counters Partial counters of the number of operations for each of the relay functions. Display T> Operations counters Thermal Image → 1I> Operations counters First overcurrent element → 2I> Operations counters Second overcurrent element →...

  • Page 23: Total Counters

    MC2-30T MO-0483-ING Doc. N° • Select “Erase” with pushbutton “Decrease”. • Press “Select” . (if Password is request, see § Password). • When command has been executed the display shows “Command Done”; and return to “5”. • With pushbutton “Exit” to go back to the main menu.

  • Page 24: Events

    MC2-30T MO-0483-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 25: Events On Display

    MC2-30T MO-0483-ING Doc. N° 15.1 – Events on display Functions Events Events Description Status Displayed Alarm Rise T> Thermal Image T> T> Trip Rise Fall 1I> 1I> Start Rise 1I> Fist overcurrent element t1I> t1I> Trip Rise Fall 2I> 2I>...
  • Page 26 MC2-30T MO-0483-ING Doc. N° Gen.Trip General Trip Rise Gen.Start General Start Rise 0.D1 Digital Input D1 Rise Fall 0.D2 Digital Input D2 Rise Fall 0.D3 Digital Input D3 Rise Fall 0.D4 Digital Input D4 Rise Fall 0.D5 Digital Input D5...

  • Page 27: System (System Parameters)

    MC2-30T MO-0483-ING Doc. N° 16. System (System parameters) Setting of system parameters. CTs&PTs Phase CT Primary Prim. 1000 (1 ÷ 9999) step → Secondary Sec. (1 / 5) → Neutral CT Primary Prim. 1000 step → (1 ÷ 9999) Secondary Sec.

  • Page 28: Settings

    MC2-30T MO-0483-ING Doc. N° 17. Settings Two complete banks of settings of the programmable variables are available in the “SETTING” menu. Both “Group #1” and “Group #2” include the hereunder listed variables. Indicates the Setting Group that is actually being modified.

  • Page 29: Modifying The Setting Of Variables

    MC2-30T MO-0483-ING Doc. N° 17.1 - Modifying the setting of variables To modify any variable setting by the keyboard proceed as follows: (example: change setting of element “1I>”, from “Is 1.000 In” to “Is 3.500 In”) Press “Menu” for •...

  • Page 30: Password

    MC2-30T MO-0483-ING Doc. N° 17.2 - Password The password is requested any time the user wishes to modify any password protected parameter (example “1I>” menu “Setting”). The factory default password is “ 1111 “. The password is only modifiable with the software.

  • Page 31: Menu: Communic. (Communication)

    MC2-30T MO-0483-ING Doc. N° 17.3 – Menu: Communic. (Communication) Options BRRem → 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: Customize (Human Machine Interface)

    MC2-30T MO-0483-ING Doc. N° 17.4 - Menu: Customize (Human Machine Interface) Lang Options → 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)

    MC2-30T MO-0483-ING Doc. N° 17.5 - Function: FileSys (File system and Disk management) Options iDwr enable [enable / disable] → OniDF StopWrite [StopWrite / DelOldFiles] → eJrn enable [enable / disable] → eTrip enable [enable / disable] eOsc enable [enable / disable] →...
  • Page 34 MC2-30T MO-0483-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 Imx=0.0; Ia=0.0; Ib=0.0; Ic=0.0; Io=0.0; I2=0.00; Tem=0 2016/06/15 10:31:03:901 tTCS Imx=0.0; Ia=0.0; Ib=0.0; Ic=0.0; Io=0.0; I2=0.00; Tem=0 17.5.2.3 –...

  • Page 35: Function: T> (Thermal Image F49)

    MC2-30T MO-0483-ING Doc. N° 17.6 - Function: T> (Thermal Image F49) Status Enab. [No / Yes] → Oper.Levels %Tb [10 ÷ 100] step → Tres %Tb [10 ÷ 100] step → [0.5 ÷ 1.5] step 0.01 → [1 ÷ 600] step 0.01...
  • Page 36 MC2-30T MO-0483-ING Doc. N° 17.6.2.2 – Thermal Image Curves (TU1024 Rev.1) Copyright 2016 Date 17.03.2022 Rev. Pag.

  • Page 37: Function: 1I> (First Overcurrent Element F50/51)

    MC2-30T MO-0483-ING Doc. N° 17.7 - Function: 1I> (First Overcurrent Element F50/51) Status Enab. [No / Yes] → f(t) Options Type - D [D / A / B / C / I / VI / EI / MI / SI ] →...

  • Page 38: Blocking Logic (Bo-Bi)

    MC2-30T MO-0483-ING Doc. N° 17.7.2 – Blocking Logic (BO-BI) For each Protection Function it is possible to activate a Blocking Logic allowing for inhibiting their operation by external signals supplied to the Digital Input. 17.7.2.1 – Output Blocking signal “BO”...

  • Page 39: Function: 2I> (Second Overcurrent Element F50/51)

    MC2-30T MO-0483-ING Doc. N° 17.8 – Function: 2I> (Second Overcurrent Element F50/51) Status Enab. [No / Yes] → Options [Off / 2tBO] → Disable [Disable / Enable] → Oper. Levels (0.1÷40) step 0.01 → Timers (0.02÷100) step 0.01 → 0.75 (0.05÷0.75)

  • Page 40: Function: 1Io> (First Earth Fault Element 50N/51N)

    MC2-30T MO-0483-ING Doc. N° 17.10 - Function: 1Io> (First Earth Fault Element 50N/51N) Status Enab. [No / Yes] → f(t) Options Type - D [D / A / B / C / I / VI / EI / MI / SI] →...

  • Page 41: Function: 3Io> (Third Earth Fault Element 50N/51N)

    MC2-30T MO-0483-ING Doc. N° 17.12 - Function: 3Io> (Third Earth Fault Element 50N/51N) Status Enab. [No / Yes] → Options [Off / 2tBO] → Oper.Levels (0.01÷9.99) step 0.01 → Timers step 0.01 → (0.02÷100) 0.75 step 0.01 → (0.05÷0.75) On = Rated primary current of CTs or of the current Tore CT.

  • Page 42: Function: 1Is> (First Negative Sequence Element F46)

    MC2-30T MO-0483-ING Doc. N° 17.13 - Function: 1Is> (First Negative Sequence Element F46) Status Enab. [No / Yes] → Options t(t) Type-D [D / A / B / C / I / VI / EI / MI / SI] →...

  • Page 43: Function: Reclos (Automatic Reclosure Rcl)

    MC2-30T MO-0483-ING Doc. N° 17.15 - Function: Reclos (Automatic Reclosure RCL) Status Enab. [No / Yes] → Options ShNum [0 - 1 - 2 - 3 - 4] → R 1I> 1+2+3+4 → → Recl. Dis = Automatic Reclosure (AR) disable...

  • Page 44: Description Of Variables

    MC2-30T MO-0483-ING Doc. N° 17.15.1 - Description of variables Enab. Function enabling (No = Disable / Yes = Enable) ShNum Number of Shots available in one Autoreclosure Cycle R1I> Allows to select one or more of the Shots of a Cycle to be initiated by tripping of the function....:...
  • Page 45 MC2-30T MO-0483-ING Doc. N° 17.15.2.1 - Example Example: programming of the Reclose Shots initiated by tripping of the protection function 1I>. R 1I> Recl.Dis. no shot is initiated on tripping of the function 1I>. R 1I> only the shot n°1 of the AR cycle is initiated on tripping of the function 1I>.

  • Page 46: Operation

    MC2-30T MO-0483-ING Doc. N° 17.15.3 - Operation The Autoreclose function is based on the setting of the variables described in the § Setting and involves the following operational status (§ Definition and Description variable). Enable/Disable Autoreclosing function Enabled/Disabled. “Wait C/B cl”...

  • Page 47: Function: Ttriprd (Trip Time Reduction)

    MC2-30T MO-0483-ING Doc. N° 17.16 - Function: tTripRd (Trip Time Reduction) Status Enab. [No / Yes] → tHold Timers 0.00 (0.00÷180) step → tC1 I 0.02 step 0.01 → (0.02÷100) tC2 I 0.02 step 0.01 → (0.02÷100) tC3 I 0.02 (0.02÷100)

  • Page 48: Function: Tcs (Trip Circuit Supervision)

    MC2-30T MO-0483-ING Doc. N° 17.17 - Function: TCS (Trip Circuit Supervision) Status Enab. [No / Yes] → Timers 0.10 (0.1÷100) step 0.01 → 18.17.1 - Description of variables Enab. Function enabling (No = Disable / Yes = Enable) Trip time delay 17.17.2 - Operation...

  • Page 49: Function: Irf (Internal Relay Fault)

    MC2-30T MO-0483-ING Doc. N° 17.18 - Function: IRF (Internal Relay Fault) In this menu it is possible to configurate the operation of the Relay Internal Fault detection element Enab. Status [No / Yes] → Timers tIRF 5.00 step 0.01 →...

  • Page 50: Function: Oscillo (Oscillographic Recording)

    MC2-30T MO-0483-ING Doc. N° 17.20 - Function: Oscillo (Oscillographic Recording) Status Enab. [No / Yes] → Trig Options Trip [Start / Trip / OnCmd / REUserLg / FEUserLg] → tPre Timers → (0.01÷2) step 0.01 tPost step 0.01 → (0.01÷8) 17.20.1 - Description of variables...

  • Page 51: Available On Software

    MC2-30T MO-0483-ING Doc. N° 17.20.3 – 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 rDskAttach...

  • Page 52: Setting "User Trigger Oscillo

    MC2-30T MO-0483-ING Doc. N° 17.20.4 – 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. 17.20.4.1 - Name Internal name 17.20.4.2 - User descr.

  • Page 53: Example: Setting "Oscillo Trigger Logic

    MC2-30T MO-0483-ING Doc. N° 17.20.5 – 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” : “1I>/2I>/3I>”, “AND”, “1”, “Monostable”, “10”. 17.20.5.1 – “Linked Functions”...
  • Page 54 MC2-30T MO-0483-ING Doc. N° 17.20.5.2 – “Operation Logic” (Oplogic) Logic” related to “User Trigger Oscillo” and press right button on Select “Oper mouse, select “Value change”: Insert “AND” into box and press “OK”: 17.20.5.3 – “Timer” Select “Timer” related to “User Trigger Oscillo” and press right button on mouse, select “Value change”:...
  • Page 55 MC2-30T MO-0483-ING Doc. N° 17.20.5.4 – “Timer type” Select “Timer” related to “User Trigger Oscillo” and press right button on mouse, select “Value change”: Select “Monostable P” into box and press “OK”: 17.20.5.5 – “Extra” Select “Extra” related to “User Trigger Oscillo” and press right button on mouse, Select “10”...

  • Page 56: Function: Cb Mngn (Control C/B)

    MC2-30T MO-0483-ING Doc. N° 17.21 - Function: CB Mngn (Control C/B) This menu allows to configurate the command for C/B operation. Status Enab. Enable Fixed → Options Ignored [Ignored / Active] → KeyE Enable [Disable / Enable] → Key0 None [None / P1 / P2 / P3 / P4 / P5 / P6] →...
  • Page 57 MC2-30T MO-0483-ING Doc. N° 17.21.2.2 – “User Variables” Variable”: Select “User 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 58: Function: Extrescfg (External Reset Configuration)

    MC2-30T MO-0483-ING Doc. N° 17.22 - 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 (see 17.2 input ExtReset). 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 59: Example

    MC2-30T MO-0483-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 60: Physical Outputs

    MC2-30T MO-0483-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 61: Functions - Operation Mode

    MC2-30T MO-0483-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 62 MC2-30T MO-0483-ING Doc. N° 18.4.2.1 - Example: Change settings for “0.R1” Change settings for “0.R1” : “1I>”, “Normally Denergized”, “Automatic reset”, “0.5”. 18.4.2.2 - “Linked Functions” Select “Linked Functions” related to 0.R1 and press right button on mouse, select “Value change”:...
  • Page 63 MC2-30T MO-0483-ING Doc. N° 18.4.2.3 - “Output Config” Config” related to “0.R1” and press right button on mouse, select Select “Output “Value change”: Select “Normally Denergized” from combo box and press “OK” (if Password is request, see § Password) Copyright 2016 Date 17.03.2022...
  • Page 64 MC2-30T MO-0483-ING Doc. N° 18.4.2.4 - “Function” Select “Function” related to “0.R1” and press right button on mouse, select “Value change”: reset” from combo box and press “OK” Select “Manual (if Password is request, see § Password): 18.4.2.5 - “tON”...

  • Page 65: Infostatus

    MC2-30T MO-0483-ING Doc. N° 19. InfoStatus In this menu is showed the status of relay Options LocR Disable → NotAvail → WaitCBcl → LocR Local and Remote Status Disable Local Remote Discrepancy Status Last reclose cycle status NotAvail Not available...

  • Page 66: Date And Time

    MC2-30T MO-0483-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 67: Clock Synchronization

    MC2-30T MO-0483-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 68: Healthy (Diagnostic Information)

    MC2-30T MO-0483-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 69: Wiring Diagram

    MC2-30T MO-0483-ING Doc. N° 25. Wiring Diagram MC2-30T 26. Overall Dimensions Copyright 2016 Date 17.03.2022 Rev. Pag.

  • Page 70: 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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