Related Manuals for MICROELETTRICA MC40-SEF
Summary of Contents for MICROELETTRICA MC40-SEF
- Page 1 MC40-SEF MO-0475-ING Doc. N° MICROPROCESSOR OVERCURRENT and EARTH FAULT RELAY TYPE OPERATION MANUAL Copyright 2012 FW: 1320.38.01.x Date 06.09.2022 Rev. Pag.
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Page 2: Table Of Contents
MC40-SEF MO-0475-ING Doc. N° 1. General Utilization and Commissioning Directions ________________________________________________________ 3 1.1 - Storage and Transportation ______________________________________________________________________ 3 1.2 - Installation __________________________________________________________________________________ 3 1.3 - Electrical Connection ___________________________________________________________________________ 3 1.4 - Measuring Inputs and Power Supply _______________________________________________________________ 3 1.5 - Outputs Loading ______________________________________________________________________________ 3 1.6 - Protection Earthing ____________________________________________________________________________ 3... -
Page 3: General Utilization And Commissioning Directions
MC40-SEF MO-0475-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 on the product's instruction or by the applicable IEC standards. -
Page 4: Maintenance
MC40-SEF MO-0475-ING Doc. N° 1.10 - Maintenance Make reference to the instruction manual of the Manufacturer; maintenance must be carried-out by specially trained people and in strict conformity with the safety regulations. 1.11 - Waste Disposal of Electrical & Electronic Equipment (Applicable throughout the European Union and other European countries with separate collection program). -
Page 5: General Characteristics
MC40-SEF MO-0475-ING Doc. N° 2. General Characteristics The MC is a very innovative and versatile line of Protective Relays which takes advantage of the long and successful experience coming from the M-Line. The main features of the MC-Line relays are: Compact draw-out execution for Flush Mounting or for assembly in 19”... -
Page 6: Operation And Algorithms
MC40-SEF MO-0475-ING Doc. N° 2.2 - Operation and Algorithms 2.2.1 - Reference Input Values Display Description Setting Range Step Unit Rated Primary current of phase C.T. 9999 Rated Secondary current of phase C.T. Rated Primary neutral 9999 Reference primary current of the relay... - Page 7 MC40-SEF MO-0475-ING Doc. N° 2.2.2.4 - Algorithm of the time current curves The Time Current Curves are generally calculated with the following equation : • • t(I) α ...
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Page 8: Time Current Curves Iec (Tu1029 Rev.0)
MC40-SEF MO-0475-ING Doc. N° 2.2.3 - Time Current Curves IEC (TU1029 Rev.0) Copyright 2012 FW: 1320.38.01.x Date 06.09.2022 Rev. Pag. -
Page 9: Time Current Curves Ieee (Tu1028 Rev.0)
MC40-SEF MO-0475-ING Doc. N° 2.2.4 - Time Current Curves IEEE (TU1028 Rev.0) Copyright 2012 FW: 1320.38.01.x Date 06.09.2022 Rev. Pag. -
Page 10: Functions And Settings (Function)
MC40-SEF MO-0475-ING Doc. N° 3. Functions and Settings (Function) 3.1 - T> (F49) - Thermal Image protection level FuncEnab → Enable [Disable / Enable] Options → No Param No Parameters TripLev → 50.00 (50.00 110.00) step → 100.00 (10.00 100.00) -
Page 11: Thermal Image Curves (Tu0445 Rev.0)
MC40-SEF MO-0475-ING Doc. N° 3.1.1 - Thermal Image Curves (TU0445 Rev.0) Copyright 2012 FW: 1320.38.01.x Date 06.09.2022 Rev. Pag. -
Page 12: I> (1F51) - First Overcurrent Protection Level
MC40-SEF MO-0475-ING Doc. N° 3.2 - I> (1F51) - First overcurrent protection level FuncEnab → Enable [Disable / Enable] Options → [D / A / B / C / MI / VI / I / EI / / SI ] →... -
Page 13: I>> (2F51) - Second Overcurrent Protection Level
MC40-SEF MO-0475-ING Doc. N° 3.3 - I>> (2F51) - Second overcurrent protection level FuncEnab → Enable [Disable / Enable] Options → Disable [Disable / Enable] → Disable [Disable / Enable] Enable [Disable / Enable] → TripLev → I>> 2.00 (0.50 40.00) step 0.01... -
Page 14: Ih (3F51) - Third Overcurrent Protection Level
MC40-SEF MO-0475-ING Doc. N° 3.4 - IH (3F51) - Third overcurrent protection level FuncEnab Enable [Disable / Enable] → Options → Disable [Disable / Enable] → Enable [Disable / Enable] → Enable [Disable / Enable] TripLev → 5.00 (0.50 40.00) step 0.01... -
Page 15: Io> (1F51N) - First Earth Fault Protection Level
MC40-SEF MO-0475-ING Doc. N° 3.5 - Io> (1F51N) - First Earth Fault protection level FuncEnab Enable [Disable / Enable] → Options → [D / A / B / C / I / VI / EI / MI / SI ] →... -
Page 16: Ioh (3F51N) - Third Earth Fault Protection Level
MC40-SEF MO-0475-ING Doc. N° 3.7 - IoH (3F51N) - Third Earth Fault protection level FuncEnab Enable [Disable / Enable] → Options → Disable [Disable / Enable] → Enable [Disable / Enable] TripLev 2.00 step 0.01 → (0.01 9.99) Timers →... -
Page 17: Bf (F51Bf) - Breaker Failure
MC40-SEF MO-0475-ING Doc. N° 3.9 - BF (F51BF) - Breaker Failure FuncEnab Enable [Disable / Enable] → Options → Relay1 Relay1 – Relay2 – Relay3 – Relay4 TripLev No Param No Parameters → Timers → 0.20 (0.05 0.75) step 0.01... -
Page 18: Cbmng - Close Breaker Manage
MC40-SEF MO-0475-ING Doc. N° 3.12 - CBMng – Close Breaker Manage FuncEnab No Param No Parameters → Options → No Param No Parameters TripLev → No Param No Parameters Timers → tcmd 0.10 (0.10 5.00) step → 0.10 (0.10 5.00) -
Page 19: Comm - Communication Parameters
MC40-SEF MO-0475-ING Doc. N° 3.14 - Comm – Communication Parameters FuncEnab No Param No Parameters → Options → 9600 [9600 / 19200 / 38400 / 57600] → 9600 [9600 / 19200] → 8,n,1 [8,n,1 / 8,o,1 / 8,e,1] → Modbus... -
Page 20: Logic Blocking Of Functions
MC40-SEF MO-0475-ING Doc. N° 4. Logic Blocking of Functions 4.1 - Blocking Outputs The instantaneous element of each of the protection functions (1F50, 2F50, 3F50, 1F50N, 2F50N, 3F50N) can be programmed to control one of the Output Relays. This relay picks-up as soon as the input quantity exceeds the set trip level of the Protection Function and it automatically resets when the input quantity drops below the function reset level (95% of the trip level) or,... -
Page 21: Digital Inputs
MC40-SEF MO-0475-ING Doc. N° 6. Digital Inputs Three optoisolated, self-powered Digital Inputs D1, D2, D3 are provided. A Digital Input is activated when its terminals are shorted by a cold contact. (Terminals 22 - 19) : It is usable as Function Blocking Input... -
Page 22: Relay Management
MC40-SEF MO-0475-ING Doc. N° 8. Relay Management The relay can be totally managed locally, either by the RS232 communication port or by the 4 key buttons and the LCD display, or remotely via the communication bus RS485 connected to the rear terminal blocks. The 2 line x 8 characters LCD display shows the available information. -
Page 23: Signalizations
MC40-SEF MO-0475-ING Doc. N° 9. Signalizations Four signal leds are available on the Front Face Panel: Illuminated when C/B open status is detected. OPEN (Digital Input D3 Open) Illuminated when C/B close status is detected. (Digital Input D3 closed) CLOSED Flashing when Breaker Failure is detected. -
Page 24: Serial Communication Port
Note: any change of this setting becomes valid at the next power on. Each relay is identified by its programmable address code (NodeAd) and can be called from the P.C. A dedicated communication software (MSCom) for windows is available on www.microelettrica.com. Maximum length of the serial bus can be up to 200m. -
Page 25: Communication Port On Front Face Panel
MC40-SEF MO-0475-ING Doc. N° 11.2 - Communication Port on Front Face Panel This port is used for communication through the Front Face Panel between a local Lap-top PC. The physical link is RS232 by the standard female 9-pin D-sub connector available on the Front Face Panel. -
Page 26: Menu And Variables
MC40-SEF MO-0475-ING Doc. N° 12. Menu and Variables 12.1 - Real Time Measurements Scrolling display of the Real Time Measurements is the Default operation. Scrolling can be stopped at any of the measurements and restarted by pressing the Reset button... -
Page 27: Lasttrip (Event Recording)
MC40-SEF MO-0475-ING Doc. N° 12.4 - LastTrip (Event Recording) The MC records any tripping and stores the information relevant to the last 20 tripping of protection functions (FIFO). Each event recording includes the following information. “Real Time Meas” “LastTrip” event, to scroll available events, to “Rec #”... -
Page 28: R/W Set (Programming / Reading The Relay Settings)
MC40-SEF MO-0475-ING Doc. N° 12.5 - R/W Set (Programming / Reading the Relay Settings) “Main Menu” select “Function” select among following sub menus 12.5.1 - CommAdd (Communication Address) “Commun” “Add: #” “Password ????” (if not yet entered; see § Password) to select the Address (1-250) to validate. -
Page 29: Function (Functions)
MC40-SEF MO-0475-ING Doc. N° 12.5.4 - Function (Functions) “Function”, function, to scroll available Functions, to Read/Write setting of the selected function, to select the different definable fields - FuncEnab - TripLev - Options - Timers to access the selected field and read the actual setting of the relevant variable to modify the actual setting;... - Page 30 MC40-SEF MO-0475-ING Doc. N° Display Description Setting Range Step Default Function Type Variable Unit Value → FuncEnab Enable Enable of the protection function Enable/Disable (3F51N) Options → Disable Operation controlled by Blocking Digital Input Enable/Disable Enable Function operation triggers the oscillographic...
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Page 31: Relaycfg (Relay Configuration)
MC40-SEF MO-0475-ING Doc. N° 12.6 - RelayCfg (Relay Configuration) To associate one of the Output Relays to one or more functions: enter the menu “R/W Set”, select “Relay Cfg”, select the “Relay #” to be programmed, select “Link”; at this stage the list of the available functions is displayed. -
Page 32: Keyboard Operational Diagram
MC40-SEF MO-0475-ING Doc. N° 13. Keyboard Operational Diagram Copyright 2012 FW: 1320.38.01.x Date 06.09.2022 Rev. Pag. -
Page 33: Password
OK button when the password is requested. 15. Maintenance No maintenance is required. In case of malfunctioning please contact Microelettrica Scientifica Service or the local Authorised Dealer mentioning the relay's Serial No reported in the label on relays enclosure. -
Page 34: Connection Diagram
MC40-SEF MO-0475-ING Doc. N° 17. Connection Diagram 18. Overall Dimensions PROTECTION DEGREE IP44 (IP54 on request) Copyright 2012 FW: 1320.38.01.x Date 06.09.2022 Rev. Pag. -
Page 35: Direction For Pcb's Draw-Out And Plug-In
MC40-SEF MO-0475-ING Doc. N° 19. Direction for Pcb's Draw-Out and Plug-In 19.1 - Draw-Out Rotate clockwise the screws in the horizontal position of the screws-driver mark. Draw-out the PCB by pulling on the handle 19.2 - Plug-In Rotate clockwise the screws in the horizontal position of the screws-driver mark. -
Page 36: 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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