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MICROENER MG30 Operation Manual

Multifunction generator protection relay
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Copyright 2010 - Microener
MULTIFUNCTION GENERATOR
PROTECTION RELAY
OPERATION MANUAL
MICROELETTRICA
SCIENTIFICA
MILANO
ITALY
MULTIFUNCTION
GENERATOR
PROTECTION
RELAY TYPE
MG30
MG30
TYPE
MG30
I>,Z<,Uo>
>,T> Zc<,>
I
2
PROG/
IC
B.I./
W<,Ir>
I.R.F.
60FL
B.F.
MODE SELECT
PROG.
ENTER/RESET
Firmware:
Doc. N° MO-0084-ING
Rev.
Date
U,f
+
-
2.0X
Pag
1
28.04.2003
1
of
43

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Summary of Contents for MICROENER MG30

  • Page 1 Rev. Date 28.04.2003 MULTIFUNCTION GENERATOR PROTECTION RELAY TYPE MG30 OPERATION MANUAL I>,Z<,Uo> >,T> Zc<,> PROG/ B.I./ W<,Ir> I.R.F. 60FL B.F. MICROELETTRICA SCIENTIFICA MILANO ITALY MODE SELECT MULTIFUNCTION GENERATOR PROTECTION RELAY TYPE PROG. MG30 ENTER/RESET Copyright 2010 - Microener Firmware: 2.0X...

  • Page 2: Table Of Contents

    10 Reading of measurements and recorded parameters________________________________________ 24 10.1 ACT. MEAS (Actual measure)___________________________________________________ 24 10.2 MAX VAL (Max values)_______________________________________________________ 24 10.3 LASTTRIP (Last trip)_________________________________________________________ 25 10.4 TRIP NUM (Trip number)______________________________________________________ 26 11 Reading of programmed settings and relay’s configuration__________________________________ 26 Copyright 2010 - Microener Firmware: 2.0X...
  • Page 3 22 Thermal image curves_________________________________________________________________ 37 23 Time current curve V/Hz________________________________________________________________ 38 24 Direction for pcb’s draw-out and plug-in__________________________________________________ 39 24.1 Draw-out____________________________________________________________________ 39 24.2 Plug-in______________________________________________________________________ 39 25 Overall dimensions____________________________________________________________________ 40 26 Keyboard operational diagram__________________________________________________________ 41 27 Setting’s form________________________________________________________________________ 42 Copyright 2010 - Microener Firmware: 2.0X...

  • Page 4: General Utilization And Commissioning Directions

    The electronic circuits produced by M.S. are completely safe from electrostatic discharge (8 KV IEC 255.22.2) when housed in their case; withdrawing the modules without proper cautions expose them to the risk of damage. Copyright 2010 - Microener Firmware: 2.0X...

  • Page 5: Maintenance

    24V(-20%) / 110V(+15%) a.c. 80V(-20%) / 220V(+15%) a.c. a) -   b) - 24V(-20%) / 125V(+20%) d.c. 90V(-20%) / 250V(+20%) d.c. Before energizing the unit check that supply voltage is within the allowed limits. Copyright 2010 - Microener Firmware: 2.0X...

  • Page 6: Measuring Input

    (see figure) Angles are measured anticlockwise from 0° to 360° with accuracy 2°. Displacement is not measured if current or voltage are null. Copyright 2010 - Microener Firmware: 2.0X...

  • Page 7: Algorithms Of The Different Functions

    : I>> = (1-9.9)Ib, step 0.1Ib Setting I>> = Dis blocks function’s operation : 0.95 Drop-out ratio Minimum operation time : 30ms Independent trip time delay : t = tI>> = (0.05-3)s, step 0.01s Copyright 2010 - Microener Firmware: 2.0X...

  • Page 8: Voltage Controlled Overcurrent

                      Below 0.2 [Un]           Above 0.8 [Un]   Copyright 2010 - Microener Firmware: 2.0X...

  • Page 9: F46 Current Unbalance

    Setting Ir = Dis : I  [Ir] Operation level Independent trip time delay : tIr = (0.1-60)s, step 0.01s (0.1 to 0.99), step 0.1s (1.0 to 60) Operation zone : 90°<c<270° Copyright 2010 - Microener Firmware: 2.0X...

  • Page 10: F40 Loss Of Excitation: Capacitive Underimpedance Zc

    (X’d = transient direct axis reactance) K1 + K2   Xd (Xd = synchronous reactance)  for salient-pole alternators and for synchronous motors  = 1, 2 for turbo alternators = 2s (1s for synch. motors) = 1/4tz Copyright 2010 - Microener Firmware: 2.0X...

  • Page 11: F27-59 Dual Level 3-Phase Over/Under Voltage

    It operates same as the first element; the programmable parameter are : Pick-up level : 2u = (5-50)%Un, step 1% Independent trip time delay : t2u = (0.1-60)s, step 0.1s Operation mode : (Un +/- 2u) Copyright 2010 - Microener Firmware: 2.0X...

  • Page 12: F81 Dual Level Over/Under Frequency

    It operates same as the first element ; the programmable parameters are : Pick-up level : 2f = (0.05-9.99)Hz, step 0.01Hz Independent trip time delay : t2f = (0.1-60)s, step 0.1s Operation mode : (Fn +/- 2f) Copyright 2010 - Microener Firmware: 2.0X...

  • Page 13: F49 Thermal Overload

    Setting W< = Dis blocks function’s operation Independent trip time delay : tW< = (0.1-60)s, step 0.1s Undervoltage inhibition level : U < 0.5Un Undercurrent inhibition level : I < 0.01In Overcurrent inhibition level : I> 2In Copyright 2010 - Microener Firmware: 2.0X...

  • Page 14: F21 Dual Level Under Impedance

    Minimum pick-up level : t2 = (0.1 – 60), step 0.1s Independent time delay Operation blocked : (2 = Dis) For both levels: Underfrequency inhibition : f < Fn -10Hz Undervoltage inhibition : U < 0.5Un Copyright 2010 - Microener Firmware: 2.0X...

  • Page 15: F64S 95% Stator Earth Fault Element

    : to3 = (0.05 – 9.99)s, step 0.01s Independent trip time delay Setting tO3 = inst no intentional delay Undervoltage inhibition : U < 0.5Un Undercurrent inhibition : I < 0.01In Operation blocked : (Uo3 = Dis) Copyright 2010 - Microener Firmware: 2.0X...

  • Page 16: F60Fl Pt Fuse Failure

    After tripping of the output relay R1 the time tBF starts. If at the end of tBF the current in any phase is still present the output relay associated to the Breaker Failure protection is energized. Copyright 2010 - Microener Firmware: 2.0X...

  • Page 17: Clock And Calendar

    During power on, time tolerance depends on the on board crystal (+/-50ppm typ, +/-100ppm max. over full temperature range). During power off, time tolerance depends on the RTC’s oscillator (+65 –270 ppm max over full temperature range). Copyright 2010 - Microener Firmware: 2.0X...

  • Page 18: Controls And Measurements

    If not tripped, this button altered. restores the default display. Copyright 2010 - Microener Firmware: 2.0X...

  • Page 19: Signalization

    - From ON to OFF, by "ENTER/RESET" push button via serial bus command only if the tripping cause has disappeared. In case of auxiliary power supply failure the status of the leds is recorded and reproduced when power supply is restored. Copyright 2010 - Microener Firmware: 2.0X...

  • Page 20: Output Relays

    This second unit REX-8 is configured (by internal Dip-Switch) to operate the eight relays two by two in parallel (only four user programmable outputs with double number of available contacts) Any of the functions featured by the MG30-X can be programmed to control up to four out of the sixteen user programmable output relays...

  • Page 21: Serial Communication

    - The relays R5, R DIAG, are not user programmable; they are normally energized and get deenergized on : - internal fault of MG30-X - Internal fault of REX-8 R5 - MG30-X power supply failure - REX-8 power supply failure R DIAG - during the programming - Interruption/fault on the serial...

  • Page 22: Digital Inputs

    10 ms). If any internal fault is detected, the display shows a fault message, the Led "PROG/IRF" illuminates and the relay R5 is deenergized. Complete test activated by the keyboard or via the communication bus either with or without tripping of the output relays. Copyright 2010 - Microener Firmware: 2.0X...

  • Page 23: Keyboard And Display Operation

    - Yellow key ENTER/RESET : It allows the validation of the programmed settings - the actuation of test programs - the forcing of the default display indication - the reset of signal Leds.  e) - Indirect key : Enables access to the programming. Copyright 2010 - Microener Firmware: 2.0X...

  • Page 24: Reading Of Measurements And Recorded Parameters

    System frequency component of Zero Sequence Voltage as % of rated Neutral-to-ground xxxx voltage (0 – 100)% Third harmonic component of Zero Sequence Voltage as % of rated Neutral-to-ground xxxx voltage (0 – 100)% Copyright 2010 - Microener Firmware: 2.0X...

  • Page 25: Lasttrip

    System frequency component of Zero Sequence Voltage as % of rated xxxx Neutral-to-ground voltage (0 – 100)% Third harmonic component of Zero Sequence Voltage as % of rated Neutral-to-ground xxxx voltage (0 – 100)% Copyright 2010 - Microener Firmware: 2.0X...

  • Page 26: Trip Num

    Enter the mode "SET DISP", select the menu "SETTINGS" or "FRELAY", scroll information available in the menu by keys "+" or "-". SETTING= values of relay's operation parameters as programmed; FRELAY= output relay associated to the different functions as programmed. Copyright 2010 - Microener Firmware: 2.0X...

  • Page 27: Programming

    ON - OFF ON-OFF U/I>> Trip level of high-set overcurrent element (p.u. of Ib) 1 - 9.9 - Dis p.u.Ib I>> 0.05 Trip time delay of the high-set overcurrent element 0.05 - 3 0.01 tI>> Copyright 2010 - Microener Firmware: 2.0X...
  • Page 28 Thermal time constant of the alternator 1 - 400 Ta/n Prealarm level of the thermal image 50 - 110 % Tn W< 0.05 Pick-up level of the active underpower element 0.05-1.00-Dis 0.05 tW< Trip time delay 0.1 - 60 Copyright 2010 - Microener Firmware: 2.0X...

  • Page 29: Programming The Configuration Of Output Relay

    R1, R4 - Reverse power time delayed element tIr> RA,RBRL operates relays R1, R4 - Field Loss Underimpedance time delayed element RA,RBRL operates relays R1, R4 4 Underpower time delayed element tW< RA,RBRL Copyright 2010 - Microener Firmware: 2.0X...
  • Page 30 The blocking input (3) blocks the operation of the delayed elements of functions (1Uo) or (2Uo) or (Uo3) in any possible combination The blocking input (2) blocks the operation of the delayed elements of functions (1u) or (2u) or (1u+2u) Copyright 2010 - Microener Firmware: 2.0X...

  • Page 31: Manual And Automatic Test Operation

    This is extremely important as discharges eventually tacking place in other parts or components of the board can severely damage the relays or cause damages, not immediately evident to the electronic components. Copyright 2010 - Microener Firmware: 2.0X...

  • Page 32: Electrical Characteristics

    Microelettrica Scientifica S.p.A. - 20089 Rozzano (MI) - Italy - Via Alberelle, 56/68 Tel. (##39) 02 575731 - Fax (##39) 02 57510940 http://www.microelettrica.com ute@microelettrica.com e-mail : The performances and the characteristics reported in this manual are not binding and can modified at any moment without notice Copyright 2010 - Microener Firmware: 2.0X...

  • Page 33: Connection Diagram (Standard Output)

    Doc. N° MO-0084-ING MG30 Rev. Date 28.04.2003 17. CONNECTION DIAGRAM (SCE1629 Rev.0 Standard Output) 17.1 - CONNECTION DIAGRAM (SCE1646 Rev.0 Double Output) Copyright 2010 - Microener Firmware: 2.0X...

  • Page 34: Wiring The Serial Communication Bus

    18. WIRING THE SERIAL COMMUNICATION BUS (SCE1309 Rev.0) 19. CHANGE PHASE CURRENT RATED INPUT 1 OR 5A Phase current input can be 1 or 5A (movable jumpers on relay’s card). 5Amp. Dip-switch 5Amp. 1Amp. 1Amp. Copyright 2010 - Microener Firmware: 2.0X...

  • Page 35: Time Current Curves F51

    Doc. N° MO-0084-ING MG30 Rev. Date 28.04.2003 20. TIME CURRENT CURVES F51 (TU0311 Rev.0) Copyright 2010 - Microener Firmware: 2.0X...

  • Page 36: Time Current Curves F46

    Doc. N° MO-0084-ING MG30 Rev. Date 28.04.2003 21. I t = CONSTANT ELEMENT F46 (TU0312 Rev.0) Copyright 2010 - Microener Firmware: 2.0X...

  • Page 37: Thermal Image Curves

    Doc. N° MO-0084-ING MG30 Rev. Date 28.04.2003 22. THERMAL IMAGE CURVES (TU0325 Rev.0) Copyright 2010 - Microener Firmware: 2.0X...

  • Page 38: Time Current Curve V/Hz

    Doc. N° MO-0084-ING MG30 Rev. Date 28.04.2003 23. TIME CURRENT CURVES V/Hz (TU0326 Rev.0) Copyright 2010 - Microener Firmware: 2.0X...

  • Page 39: Direction For Pcb's Draw-Out And Plug-In

    Slide-in the card on the rails provided inside the enclosure. Plug-in the card completely and by pressing the handle to the closed position. Rotate anticlockwise the screws  and  with the mark in the vertical position (locked). Copyright 2010 - Microener Firmware: 2.0X...

  • Page 40: Overall Dimensions

    Doc. N° MO-0084-ING MG30 Rev. Date 28.04.2003 25. OVERALL DIMENSIONS PANEL CUT-OUT 113x142 (LxH) View of Rear Terminal Connection Copyright 2010 - Microener Firmware: 2.0X...

  • Page 41: Keyboard Operational Diagram

    Doc. N° MO-0084-ING MG30 Rev. Date 28.04.2003 26. KEYBOARD OPERATIONAL DIAGRAM Copyright 2010 - Microener Firmware: 2.0X...

  • Page 42: Setting's Form

    0.5 – 5 Time multiplier of the V/Hz T.C.C. 1 – 2 - Dis Pick-up level of the V/Hz definite time element 2> 0.1 – 60 t2 Trip time delay of the 2 element Copyright 2010 - Microener Firmware: 2.0X...
  • Page 43 (1Uo) or (2Uo) or (Uo3) in any possible combination The blocking input (2) blocks the operation of the delayed elements of functions (1u) or (2u) or (1u+2u) Commissioning Engineer : Date : Customer Witness : Date : Copyright 2010 - Microener Firmware: 2.0X...

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