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MICROPROCESSOR OVERCURRENT
AND EARTH FAULT PROTECTION RELAY
OPERATION MANUAL
MICROELETTRICA
MILANO
MULTIFUNCTION
3ph O/C + E/F
+ Sensitive E/F
+ Neg. Seq. O/C
RELAY TYPE
IM30-SA
IM30-SA
TYPE
IM30-SA
I>
Io>
I>>
PROG/
S.E.F.
I
2
I.R.F.
SCIENTIFICA
ITALY
MODE SELECT
PROG.
ENTER/RESET
Copyright 2010 Microener
Doc. N° MO-0089-ING
Rev.
Pag.
Io>>
>
BLOCK ACTIVE
BRKR FAIL.
+
-
1 FW: 1.01
1 of 25
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Related Manuals for MICROENER IM30-SA
Summary of Contents for MICROENER IM30-SA
- Page 1 OPERATION MANUAL I> Io> I>> Io>> PROG/ S.E.F. > BLOCK ACTIVE BRKR FAIL. I.R.F. MICROELETTRICA SCIENTIFICA MILANO ITALY MODE SELECT MULTIFUNCTION 3ph O/C + E/F + Sensitive E/F + Neg. Seq. O/C PROG. RELAY TYPE IM30-SA ENTER/RESET Copyright 2010 Microener...
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Page 2: Table Of Contents
20 Time current curves IEC_____________________________________________________________________ 20 21 Time current curves IEEE____________________________________________________________________ 21 22 Direction for pcb’s draw-out and plug-in________________________________________________________ 22 22.1 Draw-Out_________________________________________________________________________ 22 22.2 Plug-In___________________________________________________________________________ 22 23 Overall dimensions_________________________________________________________________________ 23 24 Keyboard operational diagram________________________________________________________________ 24 25 Setting’s form______________________________________________________________________________ 25 Copyright 2010 - Microener... -
Page 3: 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... -
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: Algorithm Of The Time Current Curves
= Low-set Earth Fault current >) = Negative Sequence overcurrent For functions 2F51 (I>>, tI>>) = High-set phase overcurrent 2F51N (O>>, tO>>) = High -set Earth Fault current the operation is Independent Definite time only Copyright 2010 - Microener... -
Page 6: Controls And Measurements
ENTER/RESET the relay has tripped, this button programming mode, allowing any resets the relay and all output or all of the relay’s settings to be contacts. If not tripped, this button altered. restores the default display. Copyright 2010 - Microener... -
Page 7: Signalization
Leds e,f,h 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 8: Output Relays
The relays R1,R2,R3,R4 are normally deenergized (energised on trip): these output relays are user programmable and any of them can be associated to one of the IM30-SA's functions. One relay eventually associated to the instantaneous element of one of the functions, after pick-up normally drops-out as soon as the tripping cause disappears (current below the set trip level). -
Page 9: 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 10: 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 11: Reading Of Measurements And Recorded Parameters
As above, earth fault current. IoxxxxOn As above, negative sequence current component xxxxxIn SAxxxxIn Max. current of phase A during the first 100ms. SBxxxxIn As above, phase B. SCxxxxIn As above, phase C. As above, earth fault current. SoxxxxOn Copyright 2010 - Microener... -
Page 12: Lasttrip
Io> xxxx Io>>xxxx Trip number of High set earth fault time delayed element [tO>>]. So>xxxxx Trip number of Sensitive earth fault time delayed element [tSo>]. xxxxx Trip number of Negative Sequence O/C time delayed element [tI >]. Copyright 2010 - Microener... -
Page 13: Reading Of Programmed Settings And Relay's Configuration
= IEC Very Inverse Curve type B = IEC Extremely Inverse Curve type C (MI) = IEEE Moderate Inverse Curve (SI) = IEEE Short Inverse Curve (VI) = IEEE Very Inverse Curve = IEEE Inverse Curve (EI) = IEEE Extremely Inverse Curve Copyright 2010 - Microener... - Page 14 0.05 - 0.25 0.01 tBO0.05s output relay associated to the Breaker Failure function NodAd 1 Identification number for connection on serial communication bus 1 - 250 The setting Dis indicates that the function is disactivated. Copyright 2010 - Microener...
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Page 15: Programming The Configuration Of Output Relay
2tB0 present, it only lasts for the set trip time delay of the function plus an additional time 2xtBO (tBf 2xtBO). As above, for the earth fault elements (tBo Dis) or (tBo 2tBO). tBo 2tB0 Copyright 2010 - Microener... -
Page 16: 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 17: 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 e-mail : ute@microelettrica.com The performances and the characteristics reported in this manual are not binding and can modified at any moment without notice Copyright 2010 - Microener... -
Page 18: Connection Diagram Standard Output
Doc. N° MO-0089-ING IM30-SA Rev. 1 FW: 1.01 Pag. 18 of 25 17. CONNECTION DIAGRAM STANDARD OUTPUT (SCE1575 Rev.0) 17.1 CONNECTION DIAGRAM DOUBLE OUTPUT (SCE1576 Rev.0) Copyright 2010 - Microener... -
Page 19: Wiring The Serial Communication Bus
19 of 25 18. WIRING THE SERIAL COMMUNICATION BUS (SCE1309 Rev.0) 19. CHANGE PHASE CURRENT RATED INPUT 1 OR 5A Connector Jumper Rated Input Phase A Current Input Rated Current Phase B Input Rated Current Phase C Copyright 2010 - Microener... -
Page 20: Time Current Curves Iec
Doc. N° MO-0089-ING IM30-SA Rev. 1 FW: 1.01 Pag. 20 of 25 20. TIME CURRENT CURVES IEC (TU0353 Rev.0 1/2) Copyright 2010 - Microener... -
Page 21: Time Current Curves Ieee
Doc. N° MO-0089-ING IM30-SA Rev. 1 FW: 1.01 Pag. 21 of 25 21. TIME CURRENT CURVES IEEE (TU0353 Rev.0 2/2) Copyright 2010 - Microener... -
Page 22: 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 23: Overall Dimensions
Doc. N° MO-0089-ING IM30-SA Rev. 1 FW: 1.01 Pag. 23 of 25 23. OVERALL DIMENSIONS PANEL CUT-OUT 113x142 (LxH) View of Rear Terminal Connection Copyright 2010 - Microener... -
Page 24: Keyboard Operational Diagram
Doc. N° MO-0089-ING IM30-SA Rev. 1 FW: 1.01 Pag. 24 of 25 24. KEYBOARD OPERATIONAL DIAGRAM Copyright 2010 - Microener... -
Page 25: Setting's Form
Elements blocked by digital input Bf Elements blocked by digital input Bo 2tB0 Reset of phase element blocking input 2tB0 Reset of earth fault element blocking input Commissioning Engineer : Date : Customer Witness : Date : Copyright 2010 - Microener...
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