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MICROPROCESSOR OVERCURRENT
AND DIRECTIONAL EARTH FAULT
PROTECTION RELAY
OPERATION MANUAL
MICROELETTRICA
MILANO
MULTIFUNCTION
OVERCURRENT +
DIRECTIONAL
EARTH FAULT
RELAY TYPE
IM30-DK
IM30-DK
TYPE
IM30-DK
I>
I>>/>>>
PROG/
BR.FAIL
I
2
I.R.F.
t
SCIENTIFICA
ITALY
MODE SELECT
PROG.
ENTER/RESET
Copyright 2010 Microener
Doc. N° MO-0040-ING
Rev.
Pag.
Io>>/>>>
Io>
Uo>
BLOCK
INPUT
+
-
2
1
of
34
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Summary of Contents for MICROENER IM30-DK
- Page 1 AND DIRECTIONAL EARTH FAULT PROTECTION RELAY TYPE IM30-DK OPERATION MANUAL Io>>/>>> I> I>>/>>> Io> PROG/ BR.FAIL Uo> BLOCK I I.R.F. INPUT MICROELETTRICA SCIENTIFICA MILANO ITALY MODE SELECT MULTIFUNCTION OVERCURRENT + DIRECTIONAL EARTH FAULT PROG. RELAY TYPE IM30-DK ENTER/RESET Copyright 2010 Microener...
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Page 2: Table Of Contents
21 Time current curves IEEE______________________________________________________________ 29 22 Direction for pcb’s draw-out and plug-in__________________________________________________ 30 22.1 Draw-out____________________________________________________________________ 30 22.2 Plug-in______________________________________________________________________ 30 23 Overall dimensions____________________________________________________________________ 31 24 Keyboard operational diagram__________________________________________________________ 32 25 Setting’s form - Commissioning Test Record______________________________________________ 33 Copyright 2010 - Microener... -
Page 3: General Utilization And Commissioning Directions
The electronic circuits reduced 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... -
Page 4: Maintenance
The relay can be fitted with two different types of power supply module : 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 energising the unit check that supply voltage is within the allowed limits. Copyright 2010 - Microener... -
Page 5: Operation And Algorithms
Load In = 1500A and On = 100A Configure CT input card with jumpers J1, J2, J3 in the 5A position. Configure Earth Fault input in the 1A position by the jumper “J4”. Copyright 2010 - Microener... -
Page 6: Algorithm Of The Time Current Curves
For the IEC curves, being B = 0, the Time/Current equation (1), becomes: Where Kt = (10 -1)Ts is the time multiplier Copyright 2010 - Microener... -
Page 7: Automatic Doubling Of The Overcurrent Pick-Up Level
The doubling function is activated by programming the variables “2Ix2” an “3Ix2”. 2Ix2 = ON Doubling of the pick-up level 2I 2Ix2 = OFF No doubling for 2I 3Ix2 = ON Doubling of the pick-up level 3I 3Ix2 = OFF No doubling for 3I Copyright 2010 - Microener... -
Page 8: Operation Of The Directional Earth Fault Element
The input residual voltage 3Uo exceeds the set [xUO]: 3Uo [xUO] The input residual current 3Io exceeds the set [xO] : 3Io [xO] The displacement o of 3Io from 3Uo is within ±90° from the set direction [] : -90 o -90 Copyright 2010 - Microener... - Page 9 The characteristic angle must be selected according to the kind of earthing of the installation. Typical setting are: = 90° UNEARTHED NEUTRAL = 0° NEUTRAL EARTHED VIA RESISTOR = 60° SOLIDLY EARTHED NEUTRAL Copyright 2010 - Microener...
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Page 10: Interlocking Logic
The Breaker Failure function is related to the functions programmed to operate the output relay R1. If, after R1 has been energized, the input current does not drop to zero within the set time “tBF”, another output relay is energized for giving an alarm of tripping a back-up C/B. Copyright 2010 - Microener... -
Page 11: Breaking Energy Accumulation
As all the four button are pressed at the same time, the display shows “CLEAR? “, press the yellow button “ ENTER “ to clear all relay recorded values (last trip – trip counters, energy accumulated) Copyright 2010 - Microener... - Page 12 In the above example, the accumulation relevant to the interruption of 2000A was 10Wc corresponding This 2% is subtracted from the existing measurement “%Wi” so that the actual value “%Wi” shows the percent of the C/B utilization still remaining before maintenance is needed. Copyright 2010 - Microener...
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Page 13: 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... -
Page 14: Controls And Measurements
If not tripped, this button altered. restores the default display. Copyright 2010 - Microener... -
Page 15: Signalization
Leds e,f From ON to OFF, automatically when the lit-on cause disappears. In case of auxiliary power supply failure the status of the leds is recorded and reproduced when power supply is restored. Copyright 2010 - Microener... -
Page 16: Output Relays
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 95/98/NT4 SP3 (or later) is available. Please refer to the MSCOM instruction manual for more information Microelettrica Scientifica. Copyright 2010 - Microener... -
Page 17: Digital Inputs
4 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... -
Page 18: 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... -
Page 19: Reading Of Measurements And Recorded Parameters
Peak current of phase A during the first 100ms SAxx.xIn SBxx.xIn As above, phase B SCxx.xIn As above, phase C As above, earth fault current SOxx.x%n Peak value of Uo recorded during the first 100ms SUoxxxxV Copyright 2010 - Microener... -
Page 20: Lasttrip (Last Trip)
Enter the mode "SET DISP", select the menu "SETTINGS" or "FRELAY", scroll information available in the menu by keys "+" or "-". SETTINGS= values of relay's operation parameters as programmed FRELAY= output relay associated to the different functions as programmed. Copyright 2010 - Microener... -
Page 21: Programming
ON / OFF t2I 0.05s Trip time delay of the second element 50/51 0.02 - 60 0,01/0.1 B2 blocks function 2I B22I OFF ON / OFF Trip of t2I triggers oscillographic recording 2I Trg OFF ON / OFF Copyright 2010 - Microener... - Page 22 60-Dis NodAd 1 Identification number for connection on serial communication bus 1 - 250 Ex Trg ON External trigger of oscillographic recording (input B3) ON / OFF The setting Dis indicates that the function is disactivated. Copyright 2010 - Microener...
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Page 23: Programming The Configuration Of Output Relay
The reset after tripping of the relays associated to the time delayed elements can take place: (A) automatically when current drops below the trip level. tFRes: A (M) manually by the operation of the "ENTER/RESET" key. Copyright 2010 - Microener... -
Page 24: 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... -
Page 25: 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... -
Page 26: Connection Diagram (Standard Output)
Doc. N° MO-0040-ING IM30-DK Rev. Pag. 26 of 17. CONNECTION DIAGRAM (SCE1476 Rev.3 - Standard Output) Copyright 2010 - Microener... -
Page 27: Wiring The Serial Communication Bus
Doc. N° MO-0040-ING IM30-DK Rev. Pag. 27 of 18. WIRING THE SERIAL COMMUNICATION BUS (SCE1309 Rev.0) 19. CHANGE PHASE CURRENT RATED INPUT 1 OR 5A Copyright 2010 - Microener... -
Page 28: Time Current Curves Iec
Doc. N° MO-0040-ING IM30-DK Rev. Pag. 28 of 20. TIME CURRENT CURVES (TU0388 Rev.0) Copyright 2010 - Microener... -
Page 29: Time Current Curves Ieee
Doc. N° MO-0040-ING IM30-DK Rev. Pag. 29 of 21. TIME CURRENT CURVES (TU0388 Rev.0) Copyright 2010 - Microener... -
Page 30: 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... -
Page 31: Overall Dimensions
Doc. N° MO-0040-ING IM30-DK Rev. Pag. 31 of 23. MOUNTING Copyright 2010 - Microener... -
Page 32: Keyboard Operational Diagram
Doc. N° MO-0040-ING IM30-DK Rev. Pag. 32 of 24. KEYBOARD OPERATIONAL DIAGRAM Copyright 2010 - Microener... -
Page 33: Setting's Form - Commissioning Test Record
Trip level of third element 67N 0.4–9-Dis Trip time delay of third element 67N 0,02 - 60 0.05 B2 blocks function 3O B23O ON / OFF Trip of t3O triggers oscillographic recording ON / OFF OPTIONAL 3O Trg Copyright 2010 - Microener... - Page 34 C/B Breaking Energy maintenance level alarm KA2s KA2s The reset after tripping of the relays associated to the time delayed elements can take place: tFRes: tFRes: (A) automatically (M) manually Tecnico : Data : Cliente : Data : Copyright 2010 - Microener...
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