Microelettrica Scientifica MC20-CEI, Operation Manual

Page 1: ...Doc N MO 0431 ING Microelettrica Scientifica S p A Copyright 2009 FW 1080 36 03 X Date 18 11 2011 Rev 3 OVERCURRENT AND DIRECTIONAL EARTH FAULT PROTECTION ACCORDING TO CEI 0 16 TYPE MC20 CEI OPERATIO...

Page 2: ...___________________________________________________ 19 7 Self diagnostic _________________________________________________________________________________________________ 19 8 Relay Management________...

Page 3: ...1 5 Outputs Loading must be compatible with their declared performance 1 6 Protection Earthing When earthing is required carefully check its effectiveness 1 7 Setting and Calibration Carefully check t...

Page 4: ...e 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 Elect...

Page 5: ...ed Digital Inputs RS485 communication port independent from the RS232 port on front panel Totally draw out execution with automatic C T shorting device Input currents are supplied to 3 current transfo...

Page 6: ...put the value I1 of the primary current of the phase C Ts Only phase A and C currents are measured whereas the current of the phase B is computed as vector summation of the currents of the other two p...

Page 7: ...rent from I1 2 2 2 4 Algorithm of the time current curves The Time Current Curves are generally calculated with the following equation 1 r S a T T K B 1 Is I A t I where t I Actual trip time delay whe...

Page 8: ...MC20 CEI Doc N MO 0431 ING Microelettrica Scientifica S p A Copyright 2009 FW 1080 36 03 X Date 18 11 2011 Rev 3 Pag 8 of 35 2 2 3 Time Current Curves IEC TU1029 Rev 0...

Page 9: ...MC20 CEI Doc N MO 0431 ING Microelettrica Scientifica S p A Copyright 2009 FW 1080 36 03 X Date 18 11 2011 Rev 3 Pag 9 of 35 2 2 4 Time Current Curves IEEE TU1028 Rev 0...

Page 10: ...Definite Time A IEC A Inverse B IEC B Very Inverse C IEC C Extremely Inverse MI IEEE Moderate Inverse Curve VI IEEE Very Inverse Curve I IEEE Inverse Curve EI IEEE Extremely Inverse Curve SI IEEE Sho...

Page 11: ...ult protection level Stato Status Abilit Disabl Disable Abilit Enable Opzioni Options BI Disab Disabl Disable Abilit Enable Livelli Trip Level Io 0 50 Ion 0 01 4 00 step 0 01 Ion Tempi Timer tIo 0 50...

Page 12: ...BI Operation controlled by Blocking Digital Input Io 1 Trip level Uo 1 Trip level aA 1 First angle trip sector aB 1 Second angle trip sector t67 1 Trip time delay 2 2 5 8 67S2 Second Directional Earth...

Page 13: ...RF signal led without tripping the output relays OpI NoTRIP 2 2 5 10 AnIn Circuit Breaker Failure F51BF Stato Status Abilit Disabl Disable Abilit Enable Opzioni Options TrR Rele1 Relay1 Relay2 Relay3...

Page 14: ...me delay Operation The relay includes a complete Circuit Breaker Trip Circuit Supervision unit that is associated to the Contact 13 12 The supervision works when the C B is closed and recognizes the T...

Page 15: ...on of Keyboard buttons Off after 10sec of inactivity 2 2 5 13 Comm Communication Parameters Stato Status Non Disp Non Disp No Parameters Opzioni Options LBd 9600 9600 19200 38400 57600 RBd 9600 9600 1...

Page 16: ...showed or exported the export format is compliant with IEC 0 16 through the MSCom2 software Available Elements Logic Events Starts Trips Changing Change the setting parameters Power Supply on Power on...

Page 17: ...port Select export mode YES the events are sorted from newest to oldest NO events will be sorted from oldest to newest Select export YES the information will be exported to a test file txt NO will be...

Page 18: ...e explained in case of Breaker Failure the blocking output is released and the back up protection enabled 4 2 Blocking Input The blocking action of any protection functions can be controlled by activa...

Page 19: ...52c Input Closed C B closed Input Open C B open 7 Self diagnostic The relay incorporates a sophisticated self diagnostic feature that continuously checks the following elements A D conversion Checksum...

Page 20: ...ment 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 termi...

Page 21: ...rts to operate Illuminated when any function is tripped reset takes places by pressing the reset button d Yellow LED PWR I R F Illuminated during normal operation when Power Supply is ON Flashing when...

Page 22: ...RS485 and the Communication Protocol is MODBUS RTU IEC60870 5 103 The configuration of transmission parameters is selectable Baud Rate 9600 19200 bps 9600 19200 bps 9600 19200 bps Start bit 1 1 1 Dat...

Page 23: ...of 35 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...

Page 24: ...of the 3 phase currents of rated current IA 0 65535 A RMS value of Phase A current Primary Amps IB 0 65535 A RMS value of Phase B current Primary Amps IC 0 65535 A RMS value of Phase C current Primar...

Page 25: ...e used I First overcurrent element Short Circuit I Second overcurrent element Short Circuit I Third overcurrent element Short Circuit Io First earth fault element Io Second earth fault element 67S1 Fi...

Page 26: ...XX hh mm to set hour XX mm to set minutes To validate Set Done Exit 12 5 3 Val Nom Rated Input Values Val Nom Rated Input Values 1 st Variable to scroll variables to modify selected variable Password...

Page 27: ...bilit Enable of the protection function Abilit Disabil TCC D Time Current Curves D A B C I VI EI MI SI Opzioni BI Disabil Operation controlled by Blocking Digital Input Abilit Disabil Livelli I 0 50 I...

Page 28: ...ivelli aB 2 280 Second angle trip sector 0 360 1 67S2 Tempi t67 2 0 70 s Trip time delay 0 05 1 00 0 01 Stato Abilit Enable of the protection function Abilit Disabil Opzioni Opz NoScatto Operation of...

Page 29: ...TCS tTCS HwRec Relay1 R1 ModoOp N D N D Normally Deenergized N E Normally Energized N D N E Link tTCS AnIn BF Association of functions to output relay R2 I tI I tI I tI Io tIo Io tIo 67S1 t67S1 67S2...

Page 30: ...memory of trip counters resDLog Erase memory of Event recording UltimiSc and Data logger LedTest Test signalization leds Riarmo Reset after trip ApInt Manual Open Close Breaker ChInt Manual Close Clos...

Page 31: ...MC20 CEI Doc N MO 0431 ING Microelettrica Scientifica S p A Copyright 2009 FW 1080 36 03 X Date 18 11 2011 Rev 3 Pag 31 of 35 13 Keyboard Operational Diagram...

Page 32: ...ng parameters modification or to issue a command through the relay itself using the managing software MSCom The user can decide whether inserting his own password see MS Com Operational Manual or keep...

Page 33: ...CEI Doc N MO 0431 ING Microelettrica Scientifica S p A Copyright 2009 FW 1080 36 03 X Date 18 11 2011 Rev 3 Pag 33 of 35 17 Wiring Diagram 18 Overall Dimensions mm Protection Degree IP44 on request I...

Page 34: ...ws 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 Slide in...

Page 35: ...t transient burst IEC61000 4 4 level 3 2kV 5kHz HF disturbance test with damped oscillatory wave 1MHz burst test IEC60255 22 1 class 3 400pps 2 5kV m c 1kV d m Oscillatory waves Ring waves IEC61000 4...